Dezhurov Credit - www.spacefacts.de

Personal: Male, Married, Two children. Born in Zubovo-Polyansk, Yavas, Mordovia, Russia. Soviet Air Force Soviet Air Force Soviet Air Force

Astronaut Career

Astronaut Group: Air Force Group 8 - 1987. Inactive Entered space service: 26 March 1987. Left space service: 12 July 2004. Number of Flights: 2.00. Total Time: 244.23 days. Number of EVAs: 9.00. Total EVA Time: 1.58 days.

Call sign: Uragan (Hurricane). Official NASA Biography - 1997

NAME AND SURNAME: Vladimir Mkolaevich Dezhurov

Test Cosmonaut, Lieutenant Colonel. Resides in Star City.

PLACE AND DATE OF BIRTH:

30 June 1962, Yavas settlement, Zubovo-Polyansk district, Mordovia, Russia.

PARENTS:

Nikolai Serafimovich Dezhurov, father, and Anna Vasilievna Dezhurova, mother, reside in Yavas settlement, Zubovo-Polyansk district, Mordovia, Russia.

EDUCATION:

Graduated from the S. I. Gritsevits Khalikov Higher Military Aviation School in 1983 with a flight engineer's diploma.

FAMILY STATUS:

Married to Elena Valentinovna Dezhurova (nee Suprin). Their daughter, Anna, was born in 1983; their daughter, Svetlana, in 1987.

HONORS:

Awarded three Armed Forces medals.

WORK EXPERIENCE:

After graduating from the aviation military school in 1983, he served as a pilot and senior pilot in the Air Force. In 1987, he was assigned to the Cosmonaut Training Center. From December 1987 to June 1989, he underwent a course of general space training. In September 1989, he continued training as a member of a group of test cosmonauts. Since 1991, he has been a correspondence student at the Yu. A Gagarin Air Force Academy. In March 1994, he began flight training as a commander of the primary crew of the Mir- 18 mission aboard the Soyuz- 21 transport vehicle and the Mir orbital station as part of the Mir-Shuttle program.

• 14 March 1995 Flight: Mir EO-18. Flight Up: Soyuz TM-21. Flight Back: STS-71. Flight Time: 115.36 days.

• 10 August 2001 Flight: ISS EO-3. Flight Up: STS-105. Flight Back: STS-108. Flight Time: 128.86 days.

26 March 1987 - Soviet Air Force Cosmonaut Training Group 8 selected..

Commander Yury Usachev and Flight Engineer Jim Voss will open hatches in the Zvezda module beginning Friday morning about 9:30 to reposition a docking mechanism in preparation for the arrival of a Russian docking module later this year. They climbed into their Russian spacesuits Tuesday, entered the transfer compartment and conducted a practice session for the task, which is budgeted to take about 30 to 40 minutes.

As a precaution, hatches will be closed at various locations on the station so that the small, ball-shaped transfer compartment can be depressurized. Flight Engineer Susan Helms will remain in the Zarya module throughout the Extravehicular Activity (EVA).

Meanwhile, the Canadian Space Agency today planned to send computer commands to the station's robot arm, called Canadarm2, to attempt to pinpoint the cause of a problem with one of its seven joints in the redundant, or backup mode. Though the primary system of the arm works perfectly, the arm must have a prime and backup operating system functioning prior to the launch of Atlantis delivering the Joint Airlock to the complex.

The Canadarm2 is required for the grapple of the airlock in Atlantis' cargo bay and its installation on a docking port of the Unity module. The 25,000-pound airlock will allow future station-based spacewalks to be conducted in U.S. and/or Russian spacesuits. The Shuttle robot arm cannot reach the Airlock installation location.

In parallel, a software patch is being developed that actually can mask, or inhibit, the use of the suspect shoulder pitch joint allowing operation of the arm in six of the seven degrees of freedom. Again, the arm works fine on its primary string and, in fact, yesterday was maneuvered to what likely will serve as its stowed, or cradled position, with each end firmly attached to a grappling pin on the outside of the Destiny laboratory and one on the tunnel adapter leading to Unity.

Until the Canadarm2 evaluation is completed at week's end, shuttle and station managers will not firmly decide on the launch dates for the next two assembly missions. However, at present the next flight is tentatively slated for launch in early July pending resolution of the shoulder pitch joint problem and the conduct of a "dry-run" of the airlock installation. The follow-on flight remains scheduled for early August carrying a replacement crew for Expedition Two.

The Expedition Three crew of Commander Frank Culbertson and Flight Engineers Vladimir Dezhurov and Mikhail Turin today completed training at Star City outside Moscow.

The checkout of the Space Station Remote Manipulator System - Canadarm2 - continued this week with testing the positions and sequences that will be used for the installation of high pressure oxygen and nitrogen tanks on the outside of the Airlock after it is installed on the Unity module of the station.

Working from the Robotics Work Station inside the Destiny Laboratory, Flight Engineers Susan Helms and Jim Voss maneuvered the arm on its redundant, or backup, string of software to essentially qualify the arm for its first operational task scheduled to commence after Atlantis arrives late next week.

Atlantis' launch is scheduled for 4:04 a.m. Central time, July 12 with docking to the station late on the evening of July 13. Tucked in the shuttle's payload bay is the 6.5 ton Airlock that will add space walk capability to the orbiting outpost.

While Atlantis is being readied for next week's visit to the station, Discovery stands poised on the other shuttle launch pad ready to deliver the next resident crew to the station in August. Expedition Three will be commanded by veteran astronaut Frank Culbertson along with two Russian cosmonauts Vladimir Dezhurov and Mikhail Turin.

Expedition Two Commander Yury Usachev, Voss and Helms also continue to oversee a variety of science investigations.

The International Space Station (ISS) is orbiting in excellent shape at an altitude averaging 240 miles (385 km).

The Atlantis crew, Commander Steve Lindsey, Hobaugh and Mission Specialists Janet Kavandi, Mike Gernhardt and Jim Reilly, will leave behind the Expedition Two crew of Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms, who are in their 136th day in space.

The Expedition Three crew, Commander Frank Culbertson and Flight Engineers Vladimir Dezhurov and Mikail Tyurin, will replace the Expedition Two crew next month during the STS-105 mission.

Atlantis will undock from an International Space Station that is ready to begin independent operations. Since July 2000, 77 tons of hardware has been added to the station, including the Zvezda module, the Z1 Truss Assembly, Pressurized Mating Adapter 3, the P6 Truss and its 240-foot long solar arrays, the U.S. laboratory Destiny, the Canadarm2 and the Quest airlock.

The Atlantis crew was awakened at 4:14 p.m. Saturday by the song "Who Let The Dogs Out" sung by the Baha Men. The song was played for Hobaugh. All systems aboard both Atlantis and the International Space Station continue to function normally as the two spacecraft orbit the Earth at an average altitude of 240 statute miles.

Pilot Charlie Hobaugh was at the shuttle's aft flight deck controls for the fly-around, which allowed the shuttle crew to take a parting look at the newly installed airlock, Quest, and the four large air supply tanks they had delivered.

Commander Steve Lindsey, Hobaugh and Mission Specialists Janet Kavandi, Mike Gernhardt and Jim Reilly, had spent 196 hours, 46 minutes - or more than 8 days - docked to the station, working with Expedition Two Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms to install, checkout and christen the station's newest asset.

A final separation burn at 1:14 a.m. CDT Sunday put Atlantis on its initial course for home, with landing scheduled for 11:37 p.m. CDT Monday at Kennedy Space Center.

The entire Atlantis crew took time out to discuss the mission with CNN and Fox News early Sunday, then got ready for bed about 7:30 a.m. The shuttle astronauts will awaken at 5:34 p.m. CDT Sunday and begin stowing gear and testing Atlantis' systems that will be used during re-entry and landing.

Back on the station, the Expedition Two crew will go to bed about 1 p.m. Sunday, then enjoy a day of off-duty time following the busy shuttle stay and begin shifting back to its regular schedule. So far, the Expedition Two crew has spent 136 days in space. The trio will be replaced by Expedition Three Commander Frank Culbertson and Flight Engineers Vladimir Dezhurov and Mikhail Tyurin next month during Discovery's STS-105 mission.

All systems aboard both Atlantis and the International Space Station continue to function normally as the two spacecraft orbit the Earth independently once again.

Almost immediately after Atlantis departed following its mission to install an addition on the home in space, station Commander Yury Usachev, and Flight Engineers Jim Voss and Susan Helms began unpacking and stowing supplies delivered by Atlantis, while at the same time beginning to prepare for the arrival of their replacement crew.

The Expedition Three crew consists of Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin. The three will be delivered aboard Discovery by its crew of Commander Scott Horowitz, Pilot Rick Sturckow and Mission Specialists Dan Barry and Pat Forrester.

The STS-105 and Expedition Three crews will travel to the Kennedy Space Center in Florida Sunday and the countdown begins Monday.

While Discovery's countdown to launch to the ISS is set to begin, half a world away at the Baikonur Cosmodrome in Kazakhstan, the fifth Progress supply craft is being readied for launch Aug. 21 followed Sept. 15 by the launch of the next station component - a Russian docking compartment named Pirs, the Russian word for pier.

Expedition Two Commander Yury Usachev, Voss and Helms also continue to oversee a variety of science investigations while packing for the trip home.

The International Space Station (ISS) is orbiting in excellent shape at an altitude averaging 240 miles (385 km).

The STS-105 mission to deliver the third resident crew to the ISS is scheduled to launch tomorrow at 4:38 p.m. Central time as the ISS sails over the Southern Ocean south of Adelaide, Australia at an altitude of around 240 statute miles.

Discovery's Commander, Scott Horowitz, Pilot Rick Sturckow, and Mission Specialists Pat Forrester and Dan Barry are ready to ferry Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin to the Station for a four-month mission, succeeding Usachev, Voss and Helms, who have been aloft since March 8.

Discovery was cleared for launch earlier this week by Shuttle managers after reviewing the status of fuel injector units used in the hydraulic power units that steer the Shuttle's solid rocket booster nozzles during the first two minutes of powered flight.

Last night aboard the ISS, one of three command and control computers (C & C 1) which is used as a backup for the operation of some Station systems experienced a problem reading its hard drive, or Mass Storage Device. The hard drive stores commands for a variety of vehicle activities on the U.S. segment of the complex. Flight controllers attempted to reboot the computer with no success and are continuing efforts to bring it back into operation. This computer has lost only some of its functional capability. The Station's primary computer (C & C 3) is operating normally, however, and a third computer (C & C 2) is being transitioned from standby status to act as the backup for C & C 3.

A newly refurbished command and control computer had already been manifested to be launched on Discovery to the ISS as a spare, and would be installed for operation, if required. The backup computer glitch has had no impact on Station operations and will not affect the joint mission to deliver the new Expedition crew to the orbital outpost.

As Usachev, Voss and Helms prepared to handover command of the Station to a new crew, Russian engineers prepared two vehicles for launch right after the STS-105 mission. At the Baikonur Cosmodrome in Kazakhstan, a Progress resupply ship is being readied for launch on August 21 to deliver food, fuel and supplies for the new Expedition Three crew. It is scheduled to dock to the aft docking port of the Zvezda Service Module on August 23, one day after the current Progress attached to the ISS is jettisoned. And the newest ISS module, a Russian Docking Compartment named Pirs, the Russian word for pier, is in the final stages of preparation for launch on September 15 to link up to the earthward facing docking port of Zvezda. It will provide a new docking port for future visiting Russian vehicles.

In addition to packing to come home, the Expedition Two crew continues to oversee a variety of science investigations.

The International Space Station (ISS) is orbiting at an altitude averaging 240 miles (385 km).

The 15,107 kg payload consisted of:

• Bay 1-2: Orbiter Docking System/External Airlock and 3 EMU spacesuits - 2160 kg
• Bay 4P: Adapter beam with G-780 (Mayo High School, Rochester, Minnesota experiment to study germination of faba beans) and PSP-1 (NASA-GSFC canister with passive experiments and ballast) - 200 kg
• Bay 5: Integrated Cargo Carrier/KYD - 1280 kg, with the Early Ammonia Servicer for the station's P6 truss- 640 kg and two small exposure experiments PEC-1 and PEC-2, to be installed on the be installed on the ISS Quest module as part of the MISSE materials exposure program
• Bay 7-12: MPLM FM1 (Leonardo) module - 9800 kg total including 3300 kg of payload to be transferred to the Station
• Bay 13P: Adapter beam with G-774 (Microgravity Smoldering Combustion (MSC) experiment) and SEM-10 (canister with 11 school experiments) - 410 kg
• Bay 13S: Adapter beam with Simplesat and ACE avionics - 355 kg
• Sill: RMS arm - 410 kg

The Leonardo MPLM module was lifted out of Discovery's payload bay at 1326 GMT on August 13 and docked to Unity's nadir at 1554 GMT. 3300 kg of cargo from Leonardo was transferred to the Station. Then 1700 kg of station garbage and materials were loaded into Leonardo. It was unberthed from Unity at 1816 GMT on August 19 and returned to the payload bay for the return to Earth at 1917 GMT.

Discovery undocked at 1452 GMT on August 20 with the Expedition 2 crew aboard, leaving Expedition 3 at the Station.

At 1830 GMT on August 20 the Simplesat test satellite was ejected from a GAS canister in the cargo bay. Discovery landed at Kennedy Space Center at 1822:58 GMT on August 22 on runway 15, after a deorbit burn at 1715 GMT. The Expedition Two crew of Usachyov, Voss and Helms had been in space for 167 days. Discovery was taken out of service after the flight for structural inspections. Its last maintenance down period was in 1995-1996.

As the station sailed over the Pacific Ocean southwest of the border between Mexico and Guatemala, Discovery rocketed away from Launch Pad 39-A at the Kennedy Space Center at 4:10 p.m. Central time en route to a rendezvous and docking Sunday afternoon.

Aboard Discovery were Commander Scott Horowitz, Pilot Rick Sturckow and Mission Specialists Pat Forrester and Dan Barry along with Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin. They will replace the Expedition Two crew, Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms, who were wrapping up their 155th day in space at the time of Discovery's launch.

Less than nine minutes after beginning its journey, Discovery settled into its preliminary orbit as the crew prepared to open the ship's payload bay doors prior to receiving the green light to begin orbital operations. This is the fifth shuttle mission of the year.

Discovery's crew will spend the next few hours unpacking equipment, setting up computers and conducting the first in a series of engine firings to refine the shuttle's orbit as it heads for the station. The crew will begin an eight-hour sleep period shortly after 11 p.m. and will be awakened at 7:15 a.m. Saturday for its first full day in orbit. That day will be devoted to preparations for Sunday's rendezvous and docking and eight days of joint operations with the Expedition Two crew, highlighted by the official transfer of command of the station from Usachev to Culbertson.

Aboard the station, Usachev, Voss and Helms have spent most of the past couple of weeks packing gear for the trip home aboard Discovery, and tidying up for the arrival of visitors about 1:30 p.m. Sunday.

Discovery is in an orbit inclined 51.6 degrees to either side of the Equator with all of its systems operating normally.

Discovery's astronauts and cosmonauts, Commander Scott Horowitz, Pilot Rick Sturckow and Mission Specialists Pat Forrester and Dan Barry, and Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin, were awakened to "Back in the Saddle Again" by Gene Autry. It was played for Culbertson, making his third flight into space, eight years after he last flew.

At the time the crew was awakened, some 8000 statute miles separated Discovery from the ISS. A second firing of Discovery's orbital maneuvering systems engines is scheduled for early in the crew's day today to further adjust its orbit in preparation for rendezvous and docking with the station. Also scheduled today are the checkout of spacesuits to be worn by Barry and Forrester during two spacewalks next week, the preparation of rendezvous and navigation tools and a test of the shuttle's robotic arm, all routine work on the day before docking. Crewmembers also will perform a camera survey of Discovery's cargo bay with arm-mounted cameras.

Discovery is scheduled to linkup to the ISS tomorrow at 1:37 p.m. Central time as the two spacecraft fly over the Indian Ocean northwest of Australia, just south of the Indonesian island of Jawa.

The major objective of the STS-105 mission of Discovery is the swapout of the new resident Station crew, led by Culbertson, with the Expedition Two crew, Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms, who have been aboard the Station more than five months. They are to return to Earth aboard Discovery on August 22.

Discovery also is bringing equipment, supplies and scientific experiments to the Station. Almost 7,000 pounds of that cargo is in Leonardo, the Italian-built Multipurpose Logistics Module in Discovery's cargo bay. Once that is transferred to the station, Leonardo will be packed with other equipment, unused items and trash for return to Earth.

During their eight days docked to the station, Discovery Mission Specialists Barry and Forrester will perform two spacewalks. On the first, next Thursday, they will install a device called an Early Ammonia Servicer on the Station. It contains spare ammonia that could be used to cool Station systems should it be needed. During the second spacewalk, two days later, they will install heater cables for the station's large S0 truss segment, which will be delivered on a future mission, as well as handrails.

Discovery is orbiting the Earth in excellent shape with no issues being worked by the flight control team.

Commander Scott Horowitz, Pilot Rick Sturckow and Mission Specialists Pat Forrester and Dan Barry, along with Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin, checked out Shuttle systems, navigational tools and docking hardware in advance of Discovery's planned linkup to the ISS.

The docking is scheduled to occur Sunday at 1:38 p.m. Central time over the Indian Ocean northwest of Australia, just south of the Indonesian island of Jawa.

Forrester and Horowitz powered up, unfurled and checked out Discovery's 50-foot long robotic arm, which will be used by Forrester to move the Leonardo cargo module from Discovery's payload bay to the ISS for the transfer of food and supplies, and by Horowitz to transport Barry and Forrester around the Station during their two spacewalks next week.

In addition, Barry and Forrester tested the devices they will use tomorrow to measure Discovery's distance from the ISS and its rate of closure on the complex during the terminal phase of the Shuttle's approach to the Station. Discovery's docking mechanism was also checked out and its outer docking ring extended to ensure it is ready for tomorrow's capture of the ISS docking port on the forward end of the Station's Destiny laboratory module.

Next week, Barry and Forrester will test the spacesuits they will wear during their two excursions outside Discovery to attach a spare cooling reservoir to the ISS and to hook up heating cables for a large truss structure that will be mounted to the Station next year.

The crew enjoyed a few hours of spare time this afternoon to relax as they wound down for the start of an eight-hour sleep period just after 9 p.m. Central time tonight.

Aboard the ISS, Expedition Two Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms spent the day packing up personal items and preparing Station systems for tomorrow's arrival of their replacements, Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin. This was the 156th day in space for the current occupants of the ISS.

The exchange of crew members on the Station will occur on Monday, although formal command of the Station will not be transferred from Usachev to Culbertson until a few hours before Discovery's undocking on August 20.

Almost 7,000 pounds of food, supplies and personal items for the Expedition Three crew are housed in Leonardo, the Italian-built Multi-Purpose Logistics Module (MPLM).

Once the module is transferred to the Station and unpacked, it will be filled with equipment no longer needed on the ISS, including Expedition Two crew clothing and trash for return to Earth.

Discovery is orbiting the Earth in excellent shape with no issues being worked by the flight control team.

Expedition Two Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms looked on from the station's Destiny laboratory as Discovery arrived this afternoon, then worked in concert with their Shuttle counterparts to ensure a tight seal and a firm mate between the two vehicles.

At 3:41 p.m., hatches finally swung open between Discovery and the ISS, and the two crews greeted one another. First aboard the station was Culbertson to survey his home for the next four months. Within minutes, all ten astronauts and cosmonauts had shared greetings before settling in for a station safety briefing conducted by Usachev.

Monday the crews will attach the Leonardo cargo carrier to the station at about 9:30 a.m. and begin unloading its supplies.

Just prior to this operation, the two station crews will systematically begin the process of handing over command from Expedition Two to Expedition Three. The plan is for Culbertson and Helms to remove her form-fitting seat liner from the Soyuz spacecraft and replace it with Culbertson's at about 7 a.m. Two hours later at about 9 a.m., Dezhurov and Usachev will do the same followed at 12:30 p.m. by the seat liner swap of Tyurin and Voss. The Soyuz is used as a return vehicle in the event of a problem on the station.

Crew sleep is scheduled for about 8 tonight with a musical wakeup call from Mission Control at 5:10 a.m. Monday.

The station and shuttle complex is orbiting the Earth every 92 minutes in good shape.

Discovery Commander Scott Horowitz, Pilot Rick Sturckow and Mission Specialists Pat Forrester and Dan Barry, along with the Expedition Three crew, will begin rendezvous operations a little before 9 a.m. today. The shuttle will begin a final approach to the station from a point about 9 miles behind the outpost with the last major rendezvous maneuver scheduled at around 11:15 a.m.

With Discovery about 600 feet directly below the station, Horowitz will fly the shuttle in a quarter circle to a point in front of the complex. From there he will very slowly and precisely maneuver Discovery toward the station, pausing about 30 feet from the ISS to precisely align the docking mechanisms of the two craft.

Docking is expected to occur at 1:38 p.m. over the Indian Ocean just south of the Indonesian island of Jawa. The hatches separating the two spacecraft are to be opened around 3:30 p.m. allowing the current station residents, Expedition Two Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms to greet their replacements and the Discovery astronauts who will bring them home after more than five months in space.

ISS flight controllers are expected to ask the Expedition Two crew on Wednesday to try to reboot one of three command and control computers which experienced a hard drive problem last week and which has been put in standby mode with no impact to station operations. If the reboot does not recover the use of the hard drive, the crew may be asked to replace a component in the computer with a spare being brought to the station on Discovery. Two other command and control computers, a prime and a backup, are working perfectly in support of U.S. segment systems.

Discovery is orbiting the Earth every 90 minutes in good shape in pursuit of the International Space Station.

Once they swap out their custom-made Soyuz capsule seat liners with those belonging to Expedition Two Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms, Culbertson, Dezhurov and Tyurin will become the third trio of residents to inhabit the complex, while Usachev, Voss and Helms become members of Discovery's crew.

The Soyuz serves as a crew return vehicle in the unlikely event it should become necessary to leave the station.

Official handover of command of the ISS from Usachev to Culbertson will take place on August 20, shortly before Discovery undocks from the Station.

After the crew transfer is complete, the oncoming ISS residents will begin a comprehensive handover with their departing counterparts, receiving briefings on Station systems, the current configuration of hardware and computers and procedures they will employ during their first days on board the outpost.

Mission Specialist Pat Forrester will use Discovery's robot arm to move the Italian-built Leonardo cargo module from the shuttle's payload bay to the nadir docking port of the Station's Unity module so it can be unloaded of more than three tons of supplies and equipment for the newly arrived Expedition Three crew. Leonardo also contains racks of scientific experiments which will greatly enhance the scientific research on board the ISS over the next few months. Leonardo will be installed on the Station late this morning.

Other equipment will be transferred throughout the day from Discovery's middeck lockers to the ISS as the crews work in concert to set the stage for the Expedition Three mission.

The joined spacecraft are orbiting at an average altitude of about 244 statute miles, completing an orbit of the Earth every 90 minutes. Both craft are in good condition.

That marked the end of the Expedition Two crew's stay on the station at 148 days since it took over for the first resident crew on March 18. By the time the Expedition Two crew lands aboard Discovery next week, Yury Usachev, Jim Voss and Susan Helms will have spent 163 days aboard the station and 167 days in space.

The official ceremonial handover of command of the ISS from Usachev to Culbertson will take place Aug. 20, shortly before Discovery undocks from the Station.

The systematic swap of the seat liners and space suits occurred in and around the installation of the Leonardo Multipurpose Pressurized Logistics Module onto the station. Leonardo is one of three cargo supply vessels designed to deliver food, clothing, experiments and other hardware to and from the station throughout its orbital life. It was attached to the station at 10:55 a.m. CDT and its hatch opened at 2:47 p.m. CDT.

Now that the official crew transfer is complete, the Expedition Three crew of Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin will begin a comprehensive handover with their departing counterparts, receiving briefings on station systems, the current configuration of hardware and computers and procedures they will employ during their first days on board the outpost.

The crew will be awakened at 4:10 a.m. CDT Tuesday to continue the unloading of more than three tons of supplies and experiments from Leonardo. At 2 p.m. CDT Tuesday, the two station commanders, Culbertson and Usachev, will take part in an interview from space with television networks. The interview will air live on NASA TV.

The joined spacecraft are orbiting at an average altitude of about 244 statute miles, completing an orbit of the Earth every 90 minutes.

The wakeup music was for Discovery Commander Scott Horowitz from his wife.

The Expedition Two crew became members of Discovery's crew yesterday after Expedition Three Commander Frank Culbertson and cosmonauts Mikhail Tyurin and Vladimir Dezhurov transferred their personal seat liners to the Soyuz spacecraft docked to the station, officially beginning the third Expedition aboard the orbital outpost.

Several tons of equipment, food and supplies for the new station crew will be unloaded today from the Leonardo Multi-Purpose Logistics Module, which was attached to the Unity module of the station yesterday. The two Expedition crews will begin extensive discussions today in a handover of operations, enabling the new residents to familiarize themselves with station systems and life on board the expanding complex.

Later today, Usachev and Dezhurov will spend some time loading updated software into the computers of the Zvezda Service Module. The new software is designed to create greater efficiency in Russian commanding of systems in their segment of the station.

Discovery also will perform a reboost of the station this afternoon, increasing its average altitude by around two statute miles. At 2 p.m. Usachev and Culbertson will discuss the progress of the flight with three television networks in a series of interviews to be broadcast on NASA Television.

Discovery and the station are orbiting at an average altitude of about 244 statute miles, orbiting the Earth every 90 minutes.

During the day, the shuttle's thrusters were fired 240 times to subtly boost the station's orbit by about 2 miles over the course of one hour. At least one more 30 minute-long reboost is planned before Discovery departs early next week.

Several tons of equipment, food and supplies for the new station crew of Frank Culbertson, Vladimir Dezhurov and Mikhail Tyurin were moved to the station, while the two Expedition crews began extensive discussions of operations, enabling the new residents to familiarize themselves with station systems and life on board the ISS.

Late in the day, Expedition Two Commander Yury Usachev and Dezhurov updated software in the computers of the Zvezda Service Module to create greater efficiency in Russian commanding of systems in their segment of the station.

The Mission Control wakeup call to the shuttle and station is scheduled for 4:10 a.m. CDT Wednesday. The joint crews will continue to pack items in Leonardo for the return trip home next week, while stowing those items now aboard the station.

Discovery and the station are orbiting at an average altitude of 244 statute miles, orbiting the Earth every 90 minutes.

In preparation for that Extravehicular Activity (EVA), the crew spent part of the day checking out the suits that will be worn for the planned six and a half hour excursion to install an ammonia servicing unit on the outside of the station. It contains spare ammonia that could be used in the station's cooling system if needed. They also will attach an experiment to the station to expose samples of engineering materials to the space environment. The samples will be returned to Earth for analysis in about a year.

A second space walk currently is planned for Saturday to hook up heater cables for the first of several girder-like truss structures, that will be delivered to the station next year.

Meanwhile, members of the station's Expedition Two crew continued the handover of station operations to their Expedition Three replacements. Throughout the handover, the stowage of equipment and supplies inside the Leonardo Multi-Purpose Logistics Module continued. Some 5,200 pounds of supplies was confirmed on board the station and will be unpacked and stowed by the Expedition Three crew after Discovery departs early next week.

Early in the day, Russian flight controllers completed the reloading of upgraded software into the computers of the Zvezda module in preparation for next month's arrival of a new module to the station, the Russian Docking Compartment, which will serve as a new docking port for visiting Russian vehicles.

The Russian flight control team continues to track preparations of a Soyuz spacecraft set to deliver the next Progress supply vehicle to the station. Launch from the Baikonur Cosmodrome in Kazakhstan remains targeted for Tuesday with docking Aug. 23.

Early Thursday morning, the Expedition Three crew of Frank Culbertson, Vladimir Dezhurov and Mikhail Tyurin plan to televise a commemorative message marking the one-thousandth day in space for the International Space Station. It was Nov. 20, 1998 when the first element - Zarya - was launched atop a Proton rocket initiating the construction of the orbiting outpost.

Discovery and the station are orbiting the Earth every 90 minutes at an average altitude of 246 statute miles with no systems issues being worked by the flight control team.

Earlier today, the computers inside the Zvezda module once again assumed control of the station's attitude - or position in space -- after Russian flight controllers completed the loading of upgraded software commands to those computers. In the meantime, Discovery maintained control of the complex until the computer upgrades were completed with no impact to station operations.

The Expedition Three crew --Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin -- earlier today offered commemorative remarks on the occasion of the 1000th day in space for the International Space Station since the Zarya module was launched on Nov. 20, 1998 from the Baikonur Cosmodrome in Kazakhstan.

Discovery and the station are orbiting the Earth every 90 minutes at an average altitude of 244 statute miles with all systems functioning normally.

Barry and crewmate Pat Forrester will conduct the first space walk of Discovery's flight to the International Space Station at around 9:30 this morning to install the Early Ammonia Servicer on the station's P6 truss structure. The servicing unit contains spare ammonia that could be used in the station's cooling system, if needed.

They also will attach an experiment to the station to expose samples of materials to the space environment. Carrying the acronym MISSE, for Materials International Space Station Experiment, it contains about 1,500 samples of materials in two suitcase-like containers. The samples will remain outside the station for about a year, then will be returned to Earth for analysis.

Discovery Commander Scott Horowitz will operate the shuttle's robotic arm during the space walk. Pilot Rick Sturckow will serve as the space walk choreographer from inside the shuttle's cabin during the 61/2-hour space walk, which will be staged from Discovery's airlock.

A second space walk is planned for Saturday. Barry and Forrester will hook up heater cables for another truss structure to be delivered to the station next year.

Aboard the ISS, the computers of the Zvezda Service Module once again commanded the station's gyroscopes to assume control of the orientation of the complex at around 5 a.m. after Russian flight controllers completed their loading of upgraded software commands to those computers. In the meantime, Discovery maintained control of the complex until the computer upgrades were completed with no impact to station operations.

While Barry and Forrester conduct their space walk, the Expedition Three crew, Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin, will continue stowage of equipment and supplies inside the Leonardo Multi-Purpose Logistics Module for return to Earth. The Italian-built pressurized module brought almost 7,000 pounds of equipment, supplies and two scientific experiment racks to the station.

At 7:10 this morning, Culbertson and his crewmates plan to offer a few commemorative words to mark the 1000th day in space for the International Space Station since the Zarya module was launched on November 20, 1998 from the Baikonur Cosmodrome in Kazakhstan.

Discovery and the station are orbiting the Earth every 90 minutes at an average altitude of 244 statute miles with all systems functioning normally.

Expedition Two Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms continued handover briefings with the Expedition Three crew while stowage of equipment, discarded items and belongings of the Expedition Two crew continued aboard the Leonardo Multi-Purpose Logistics Module for return to Earth.

The new station Commander, Frank Culbertson, and Russian cosmonauts Vladimir Dezhurov and Mikhail Tyurin, officially took command of the station Monday afternoon to begin a four month stay on the ISS. The Expedition Two crewmembers, which spent more than five months on the station, will return home aboard Discovery next week.

In preparation for the space walk set to begin about 9 a.m. Saturday, Dan Barry and Pat Forrester reviewed procedures and checked hardware that will be used during the excursion outside the station to hook up heater cables for a truss structure to be delivered to the station next year.

Shuttle Commander Scott Horowitz and Pilot Rick Sturckow performed the mission's second reboost of the station early in the day, raising the average altitude of the ISS by 2.2 statute miles (3.5 kilometers). Discovery's thrusters were systematically fired 253 times over the course of an hour. It was the final reboost planned prior to Discovery's departure Monday morning.

The crew heads to bed about 9 tonight, Central time and will be awakened by Mission Control at 4:10 a.m. CDT Saturday.

Discovery and the station are orbiting the Earth every 90 minutes at an average altitude of 247 statute miles with all systems functioning well.

Expedition Two Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms will continue handover briefings with the Expedition Three crew. The new station commander, Frank Culbertson, and Russian cosmonauts Mikhail Tyurin and Vladimir Dezhurov have taken up residence aboard the station. The Expedition Two crewmembers, who spent more than five months on the station, will return home aboard Discovery next week.

Aboard Discovery, Commander Scott Horowitz, Pilot Rick Sturckow, and Mission Specialists Pat Forrester and Dan Barry, along with the Expedition Two crewmembers, were awakened at 4:10 a.m. Central time to the sounds of "Time Bomb", a song performed for Forrester by his sons, Patrick and Andrew.

On the heels of their successful space walk yesterday to install an ammonia coolant reservoir and a suite of experiments on the station, Barry and Forrester will be reviewing procedures and will check out hardware for the mission's second space walk on Saturday to hook up heater cables for a truss structure to be delivered to the station next year

Horowitz and Sturckow will perform the mission's second reboost of the station this morning, this one to raise the ISS' altitude by about two statute miles. The three Russian crewmembers aboard the shuttle/station complex will field questions from Russian reporters at the Russian Mission Control Center outside Moscow at 11:15 a.m. Central time. Three hours later, at 2:15 p.m., all ten crewmembers will hold a news conference with U.S. reporters at NASA centers. At 3 p.m., the crewmembers will gather for a change of command ceremony on the station as Expedition Two Commander Usachev passes the baton to Expedition Three Commander Culbertson. The formal handover of command actually occurred late Monday afternoon after the crews exchanged custom-made Soyuz seat liners for the return capsule docked to the station.

Discovery and the station are orbiting the Earth every 90 minutes at an average altitude of 244 statute miles with systems functioning well.

Discovery's astronauts, including the returning Expedition Two crew, were awakened at 4 a.m. Central time by "Hotel California," performed by the Eagles. It was requested for Expedition Two Commander Yury Usachev by his wife.

The new station crew, Commander Frank Culbertson and Cosmonauts Vladimir Dezhurov and Mikhail Tyurin, are beginning a four-month stay on the station. They will be separated from Discovery's crew by closed hatches to accommodate today's space walk

Barry and Forrester are to emerge from the shuttle's airlock a little after 9 a.m. Central time. Commander Scott Horowitz will operate the shuttle's robotic arm to move the space walkers around while Pilot Rick Sturckow will serve as the space walk choreographer.

The heating cables Barry and Forrester will install are for the S0 truss, to be delivered to the station next year. The space walk is the 26th in support of the assembly of the International Space Station and is expected to last around 6 hours.

Discovery and the station are orbiting the Earth every 90 minutes at an average altitude of 246 statute miles with all systems functioning well.

The cables would provide backup power to the S0 truss, if needed, in the unlikely event it could not be installed in a timely fashion on the station next spring as the centerpiece for a 300-foot girder, which will serve as the backbone for the orbital outposts external experiments, solar arrays and the future mobile base for the Canadian-built station robotic arm.

Barry and Forrester began their spacewalk at 8:42 a.m. Central time, and ended their final excursion outside Discovery at 2:11 p.m., completing the 26th spacewalk devoted to the assembly of the International Space Station, 24 of which were staged from the Shuttle, and the 68th spacewalk in Shuttle program history.

Other spacewalk statistics following today's activity include:

-- Total spacewalk time in Shuttle program history: 431 hours, 39 minutes. -- Total spacewalk time to assemble the ISS: 167 hours, 24 minutes. -- Total Shuttle spacewalk time for ISS assembly: 163 hours, 3 minutes. -- Total spacewalk time for the two EVAs on STS-105: 11 hours, 45 minutes.

While the spacewalk was being conducted, Expedition Three Commander Frank Culbertson and his crewmates, Vladimir Dezhurov and Mikhail Tyurin, continued loading the Leonardo cargo module on the station, which will be detached from the ISS Unity module Sunday and returned to Discovery's payload bay for the trip back home.

The astronauts and cosmonauts will begin an eight-hour sleep period at about 8 tonight Central time and will be awakened at 4:10 a.m. Sunday to begin the 10th day of this mission.

The two spacecraft are in excellent health orbiting the Earth every 90 minutes at an altitude of 250 statute miles.

The ten crewmembers aboard Discovery and the station are spending their final day and night together prior to the farewell ceremony and hatch closing scheduled for about 7 a.m. CDT tomorrow. That follows the wakeup call from Mission Control set for 4:40 a.m.

Leonardo brought almost 7,000 pounds of material to the station, including equipment, supplies and two scientific racks for the new Expedition Three crew of Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin. Leonardo - one of three pressurized cargo carriers provided by the Italian Space Agency - completes its second visit to the station.

Astronaut Pat Forrester carefully removed the high-tech moving van from the station and placed it back in Discovery's payload bay at 2:15 p.m. CDT. He was backed up throughout the operation by Discovery Commander Scott Horowitz, who operated the arm during the spacewalks by Forrester and Dan Barry to outfit the station with spare equipment and scientific gear.

Once Discovery departs, Pilot Rick Sturckow will perform a strategic fly around of the station at a distance of about 400 feet before firing thrusters shortly after 11 a.m. to depart the vicinity of the complex. Wednesday afternoon, Discovery is set to return to the Kennedy Space Center with the Expedition Two crew of Yury Usachev, Jim Voss and Susan Helms. The three departed the Florida spaceport March 8 and will return after 167 days in space.

Meanwhile, Russian space officials are set to launch the fifth Progress resupply craft to the International Space Station Tuesday at 4:24 a.m. Central time followed by an automatic docking early Thursday. The Progress will carry supplies, food and equipment for the new Expedition Three crew. Its predecessor will be undocked Wednesday and commanded to burn up harmlessly in Earth's atmosphere.

Discovery and the ISS are orbiting the Earth every 90 minutes at an altitude of 246 statute miles with all systems functioning normally.

Discovery's crew, including the returning Expedition Two crewmembers, were awakened shortly after 4 a.m. Central time by the sounds of "Under the Boardwalk" by the Drifters, played for Jim Voss by his wife Suzan.

Leonardo brought almost 7,000 pounds of material to the station, including equipment, supplies and two scientific racks for the new Expedition Three crew of Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin. Leonardo, which is one of three pressurized cargo carriers for station resupply activities provided by the Italian Space Agency, is completing its second visit to the station.

Mission Specialist Pat Forrester will use the shuttle's robotic arm this afternoon to unberth Leonardo from the station and move it to Discovery, beginning the one-hour operation a little before 12:30 p.m. He will be backed up by Discovery Commander Scott Horowitz, who operated the arm during two successful space walks by Forrester and Dan Barry to outfit the station with critical spare equipment and scientific gear.

Overnight, controllers reworked the crewmembers' flight plan to give them some time off this afternoon after Leonardo is returned to Discovery. The day will be highlighted by final handover discussions between the two Expedition crews before hatches are closed one last time between Discovery and the station tomorrow morning just before 7 a.m. Central time. Discovery is scheduled to undock from the ISS at 9:52 a.m. Central time Monday to set the stage for a landing at the Kennedy Space Center Wednesday afternoon, completing 167 days in space for Expedition Two Commander Yury Usachev, Voss and Susan Helms.

Meanwhile, Russian space officials are all set to launch a new Progress resupply craft to the International Space Station on Tuesday at 4:24 a.m. Central time for a docking early Thursday. The Progress will carry supplies, food and equipment for the new Expedition Three crew. The Progress currently docked to the aft end of the Zvezda Service Module will be undocked on Wednesday and commanded to a destructive reentry in Earth's atmosphere.

Discovery and the ISS are orbiting the Earth every 90 minutes at an altitude of 246 statute miles with all systems functioning normally.

The final farewells and hatch closing are scheduled for just before 7 a.m. Central time. Discovery's crewmembers, Commander Scott Horowitz, Pilot Rick Sturckow, and Mission Specialists Pat Forrester and Dan Barry, assisted by the returning Expedition Two crew, Commander Yury Usachev and Astronauts Jim Voss and Susan Helms, will undock Discovery at 9:52 a.m. as the two craft sail over the south Pacific due west of the southern coast of Chile.

With Sturckow at the controls, the shuttle will conduct a flyaround of the station, circling it 11/4 times before the shuttle's jets are fired at 11:12 a.m. to drop Discovery into a lower orbit for final separation from the station.

The seven crewmembers aboard Discovery were awakened at 3:40 a.m. by the sounds of "Brand New Day," played by Sting. The song was for Helms, requested by her family and friends. She and her Expedition Two crewmates are wrapping up five and a half months on orbit.

Parked in Discovery's cargo bay is Leonardo, the Multi-Purpose Logistics Module that brought 7,300 pounds of material to the station, including equipment, supplies and two scientific racks. It is returning to Earth with almost 2 tons of unneeded equipment from the station, trash and personal effects of the Expedition Two crew.

Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin are beginning a science-intensive increment that is scheduled to end with their replacement by the Expedition Four crew late this year.

Also on today's schedule for Discovery's crewmembers after undocking is the deployment of a small science satellite called Simplesat, designed to evaluate the use of inexpensive commercially available hardware in space. It is designed to demonstrate GPS attitude control and pointing in free flight. It will be spring-ejected from a canister at the rear of the Shuttle's cargo bay.

The Russians are all set to launch an unmanned Progress resupply craft from the Baikonur Cosmodrome in Kazakhstan tomorrow at 4:24 a.m. Central time. It is the fifth Progress to be launched to the station, and is scheduled to dock a little after 5 a.m. on Thursday, the day after the current Progress attached to the ISS is undocked from the rear of the Zvezda Service Module to burn up in the atmosphere with its load of trash.

Discovery and the ISS are circling the Earth every 90 minutes at an altitude of 246 statute miles. All systems are functioning well.

The final farewells and hatch closing occurred at 7 a.m. Central Monday just prior to closing the hatches and conducting leak checks between the two vehicles. Under control of Pilot Rick Sturckow, Discovery gently backed away from the station to a distance of about 450 feet. At that point, Sturckow performed a fly-around of the complex allowing for photo documentation and a final look by Yury Usachev, Jim Voss and Susan Helms at their home for the past five and a half months.

Returning with Discovery is the Leonardo Multi-Purpose Logistics Module that brought equipment, supplies and two scientific racks to the station. It is returning to Earth with more than a ton of equipment, experiments, personal effects and unneeded hardware.

Also today, Discovery's crewmembers deployed a small science satellite called Simplesat, designed to evaluate the use of inexpensive commercially available hardware in space. It is designed to demonstrate Global Positioning System attitude control and pointing in free flight. It was spring-ejected from a canister at the rear of the Shuttle's cargo bay.

Tuesday is a day devoted to packing up the orbiter and checking its landing systems for the planned return to the Kennedy Space Center Wednesday. Landing is set for just before Noon Central time with weather conditions expected to be favorable with light winds and only a slight chance of rain predicted in the area.

Meanwhile, on the steppe of the Kazak desert, a Soyuz rocket is poised to launch an unmanned Progress supply ship to the station tomorrow at 4:24 a.m. Central time. It is the fifth Progress to be launched to the station, and is scheduled to dock a little after 5 a.m. Thursday, the day after the current Progress attached to the ISS is undocked from the rear of the Zvezda module to burn up in the atmosphere.

The two spacecraft are at slightly different orbits, circling the Earth every 90 minutes. All systems are in excellent shape.

Leading the station now by more than a thousand miles, Discovery's aero surfaces and maneuvering engines were tested early today by the shuttle's Commander Scott Horowitz and Pilot Rick Sturckow while the remaining crewmembers busily prepared the cabin for the high-speed reentry.

Late in the day, the reclining seats that will be occupied by Expedition Two Commander Yury Usachev, and Flight Engineers Jim Voss and Susan Helms were put into position on the orbiter's middeck. The reclined position has been proven to be the most comfortable method of return to Earth from space by long duration crewmembers.

Weather forecasters are predicting favorable conditions in Central Florida for Discovery's return to Earth, prompting mission managers to forego calling up support at the backup landing site in California.

To prepare for deorbit and landing activities, the shuttle crew will awaken at 3:10 a.m. Wednesday and start deorbit preparations about 6:45 a.m. The payload bay doors are to be closed at about 8 a.m. with the deorbit firing of the twin Orbital Maneuvering System engines on the tail of Discovery targeted for 10:37 a.m.

While Discovery was readied for the trip home, the Expedition Three crew of Frank Culbertson, Vladimir Dezhurov and Mikhail Tyurin activated one of the two scientific racks delivered by Discovery's crew. The crew also prepared for the undocking of a Progress supply vehicle docked to the station since late May. The undocking is set for 1:05 a.m. Wednesday to make room for the next Progress already on its way following launch at 4:24 a.m. today from the Baikonur Cosmodrome in Kazakhstan. As was its four predecessors, the 5 Progress is loaded with fuel, food and other equipment for use by the Expedition Three crew.

The launch pad now is free for the next launch of a Soyuz Sept. 15 delivering the Russian Docking Compartment to the station.

Discovery is circling the Earth every 90 minutes at an average altitude of about 240 statute miles. Systems aboard it and the International Space Station are in excellent shape.

Discovery Commander Scott Horowitz, Pilot Rick Sturckow, and Mission Specialists Pat Forrester and Dan Barry, along with Expedition Two crewmembers Commander Yury Usachev, and Astronauts Jim Voss and Susan Helms, were awakened at 3:10 a.m. CDT to the sounds of "East Bound and Down" by Jerry Reed, at the request of their Houston-based training team.

Activities on board Discovery will focus on tomorrow's planned return trip to Earth as the astronauts stow away the equipment and hardware used during their mission and verify the performance of Discovery's landing systems. Horowitz, Sturckow and Barry will conduct the standard day-before-landing checkouts of the flight control surfaces, the rudder and flaps that will control the shuttle during its descent through the atmosphere.

Later in the day, they will set up three recumbent seats on Discovery's middeck for use by the returning Expedition Two crewmembers during Wednesday's re-entry. The seats are designed to minimize the forces of reentry after their more than five months in space.

Expedition Three crewmembers Frank Culbertson, Vladimir Dezhurov and Mikhail Tyurin, were awakened about 12:30 a.m. to begin their first day alone aboard the space station. The day's plan includes activation and checkout of Express Rack 4 - one of two scientific racks for the U.S. laboratory Destiny delivered during STS-105 - exercise and a review of plans for unloading the next Russian unpiloted cargo carrier, Progress 5, scheduled to arrive at the station Thursday morning.

Crewmembers also activated the current Progress vehicle, docked at the rear of the station's Zvezda module, before closing the hatches that connect it to the station. Progress 4 is scheduled to be undocked from the station shortly after 1 a.m. Wednesday. The new Progress supply ship - Progress 5 - was launched on a Soyuz rocket at 4:24 a.m. today from the Baikonur Cosmodrome in Kazakhstan and is scheduled to dock at the station about 5 a.m. Thursday with its cargo of fuel, food and equipment.

Discovery is circling the Earth every 90 minutes at an average altitude of about 240 statute miles. Systems aboard the shuttle and the International Space Station are functioning well.

Following a one-orbit wave-off due to a rain shower that popped up off the end of the landing strip, STS-105 Commander Scott Horowitz fired Discovery's engines to begin the shuttle's return through the atmosphere, concluding a 4.3 million mile voyage. On Discovery's middeck, the Expedition Two crew - Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms - rode home in recumbent seats designed to lessen the effects of gravity.

Following routine medical examinations, the STS-105 crew - Horowitz, Pilot Rick Sturckow and Mission Specialists Dan Barry and Pat Forrester - along with the Expedition Two crew, will be reunited with their families. All seven crewmembers are expected back in Houston about 5 p.m. Thursday for a public welcome home ceremony at Ellington Field.

During their 12 days on orbit, the STS-105 astronauts worked with both the returning Expedition Two crew and newly-arrived Expedition Three crew to transfer more than two tons of experiment hardware, food and logistical supplies between Discovery and the station. In addition, Barry and Forrester performed two spacewalks to prepare the station for future growth.

In the meantime, aboard the International Space Station, the Expedition Three crew - Commander Frank Culbertson and Cosmonauts Vladimir Dezhurov and Mikhail Tyurin - are preparing for the arrival of a Progress 5 cargo vehicle which is scheduled to dock to the aft docking port of the Zvezda module of the Station about 5 a.m. tomorrow.

Discovery is about 1,300 statute miles ahead of the space station and widening the gap by about 50 miles per 90-minute orbit. The seven-member crew - Commander Scott Horowitz, Pilot Rick Sturckow, Mission Specialists Dan Barry and Pat Forrester, along with the returning Expedition Two crew members, Commander Yury Usachev and Flight Engineers Susan Helms and Jim Voss - were awakened at 3:10 a.m. CDT to begin a day with two landing opportunities at Florida's Kennedy Space Center. Weather conditions in Florida hold promise for today's landing, but the entry team of flight controllers will be watching for a chance of rain near the landing site.

The first opportunity would see a deorbit burn at 10:37 a.m., resulting in an 11:46 a.m. CDT (12:46 p.m. EDT) landing. Discovery would descend across southern Mexico, cross the Bay of Campeche, skirt the northwestern tip of the Yucatan Peninsula, and cross the Gulf of Mexico before making landfall on Florida's western coast. For the second opportunity, the deorbit burn would occur at 12:17 p.m. The shuttle would cross northern Mexico, descend over the Rio Grande near Laredo, and fly along the Gulf Coast before crossing the Florida peninsula for a 1:23 p.m. landing.

Aboard the International Space Station, the Expedition Three crew - Commander Frank Culbertson and Cosmonauts Vladimir Dezhurov and Mikhail Tyurin - were awakened a little after midnight for the undocking of the Progress 4 vehicle. That spacecraft was moved to make way for the Progress 5 cargo vehicle which launched at 4:24 a.m. Tuesday from the Baikonur Cosmodrome in Kazakhstan and is scheduled to dock at the rear of the space station's Zvezda Service Module about 5 a.m. tomorrow.

Progress 4 docked to the space station last May 22 with a cargo of equipment, food, fuel and spare computer parts. After unloading, it was refilled with trash. Just before 1 a.m. flight controllers at Moscow's Mission Control Center sent the command for it to undock. About three minutes later, springs pushed it away from the station, and three minutes after that, Progress jet thrusters were fired to increase the separation rate. At about 4 a.m. a deorbit burn command initiated its descent to fiery destruction in the Earth's atmosphere.

Discovery is circling the Earth every 90 minutes at an average altitude of about 240 statute miles. Systems aboard the shuttle and the space station are functioning well.

The unmanned Progress 5 craft linked up to the aft docking port of the Zvezda Service Module at 4:51 a.m. Central time (951 GMT) after an automated two-day excursion following its launch Tuesday from the Baikonur Cosmodrome in Kazakhstan. The docking occurred over Central Asia.

Within a few minutes after docking, hooks and latches were commanded to close between the Progress and Zvezda, forming a hard mate and a tight seal between the two craft. Hatches between the two vehicles will be opened later today, enabling Station Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin to unload some 3000 pounds of supplies and personal effects.

The arrival of the Progress vehicle at the Station sets the stage for the launch of the next module for the outpost next month --- the Russian Docking Compartment named Pirs, the Russian word for pier. The Docking Compartment will automatically link up to the nadir, or earthward facing docking port of Zvezda two days after launch, providing an additional docking port for future Russian vehicles arriving at the ISS.

At the Kennedy Space Center, Expedition Two Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms are in excellent shape, readapting to gravity and enjoying life back on Earth after167 days in space, 163 days of which were spent aboard the ISS. They are scheduled to return to Ellington Field in Houston late this afternoon with their Discovery crewmates, Commander Scott Horowitz, Pilot Rick Sturckow and Mission Specialists Pat Forrester and Dan Barry following yesterday's landing of Discovery at the Florida spaceport.

In addition to attending to the newly arrived Progress craft, the Expedition Three crew continues to oversee a variety of science investigations.

The International Space Station (ISS) is orbiting at an altitude averaging 240 miles (385 km).

The arrival of the Progress vehicle at the Station sets the stage for the launch of the next module for the outpost next month --- the Russian Docking Compartment named Pirs, the Russian word for pier. The Docking Compartment will automatically link up to the nadir, or earthward facing docking port of Zvezda two days after launch, providing an additional docking port for future Russian vehicles arriving at the ISS. A Progress-style instrumentation and propulsion stage attached to Pirs, which will provide the new module with its thruster capability to reach the ISS, will be jettisoned shortly after the new component docks to Zvezda.

The crew members are also working on unpacking equipment recently delivered on the STS-105 shuttle mission. They installed the Volatile Organic Analyzer (VOA) this week and will activate it later this week. The VOA is designed to sample the air inside the ISS, detecting and identifying any possible contaminants. Flight controllers at Mission Control, Houston will command the VOA to take daily local samples of the air. The Expedition Three Crew can also take remote air samples from anywhere in the ISS.

One of the voltage converter units in the Zvezda associated with one of eight power-producing batteries for the Service Module was successfully replaced this week after it recently experienced a problem. All of Zvezda's systems are functioning normally.

In addition to attending to the new supplies, the Expedition Three crew continues to oversee a variety of science investigations.

The International Space Station (ISS) is orbiting at an altitude averaging 240 miles (385 km).

Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin are in the fourth week of a four-month stay aboard the station. Much of their time was devoted to experiment work this week, uninterrupted by any station system problems. Some minor repairs were accomplished by the crew and included a check of wiring that proved a treadmill is usable for exercise sessions onboard; tightening of a connection in a station air conditioning system that stopped a minute freon leak; and the installation of a new videotape recorder in the Destiny Laboratory, replacing a recorder that had failed.

Early this morning, flight controllers assisted the crew as the station's orientiation was changed slightly to allow the Sun to continue to fully shine on the complex's solar arrays. As the seasons change, the angle of the sun relative to the station also changes. The sun had previously been fairly low to the southern horizon relative to the station, and the complex was oriented so as to point the arrays south toward the sun. The sun has grown higher in the sky relative to the station now and the complex today was moved back to an orientation that has the arrays perpendicular to the station's direction of travel, a more naturally stable orientation that is preferred for the complex when possible. Such orientation adjustments are performed regularly to optimize power generation. Later today, Culbertson maneuvered the station's Canadarm2 robotic arm into position to allow its television cameras to focus on a dump of waste water from vents on the Destiny Lab that is planned to be performed on Friday. About five gallons of water will be dumped overboard in 10 minutes, and the behavior of the expelled water crystals will be recorded. The crew also will document station surfaces with both television and still photography both before and after the water dump. Water has been dumped from the Destiny vents before, but Friday's activities will allow engineers to better characterize how well the jettisoned water clears the vicinity of the station.

Scientific work on the station this week has been highlighted by the completion of a human cell culture experiment that has grown colon, kidney and ovarian cancer cells in space to be used in medical research when returned to Earth late this year. The crew also installed equipment in preparation for a series of tests to characterize a vibration isolation system that will dampen disturbances to very sensitive experiments aboard the station. In addition, the crew continued to gather data from a host of investigations of the radiation environment in orbit and monitored the status of other studies.

Flight controllers and the crew are preparing for the continued assembly of the station next week with the planned launch of a new Russian station component from the Baikonur Cosmodrome in Kazakhstan. Liftoff of a Soyuz rocket carrying the Pirs Docking Compartment, a Russian airlock and docking port, is planned for about 6:35 p.m. CDT Sept. 14. The Pirs compartment, which is the Russian word for pier, is planned to dock with the station at about 8:08 p.m. CDT Sept. 16, attaching to an Earth-facing port on the station's Zvezda living quarters module.

The International Space Station (ISS) is orbiting at an average altitude of 240 statute miles (385 km).

The Expedition Three crew is in its fifth week of a four-month stay aboard the space station. The crew is continuing to work with a variety of scientific experiments aboard the station and perform periodic maintenance on station systems as required. The crew and flight controllers are preparing for Friday's launch of a new Russian station component from the Baikonur Cosmodrome in Kazakhstan. Liftoff of the Soyuz rocket carrying the Pirs Docking Compartment, a Russian airlock and docking port, is planned for 6:35 p.m. Central time September 14. Pirs, the Russian word for pier, is scheduled to dock with the station at 8:08 p.m. September 16, at an Earth-facing port on the station's Zvezda module.

Last Friday, the crew released about five gallons of wastewater from vents on the Destiny Lab to allow ground controllers to study the behavior of the expelled water crystals. The crew also took the first measurements for the PuFF experiment that is studying the function of an astronaut's lungs over the course of a long-duration space flight. The crew tested their lung capacity using equipment in the Human Research Facility Rack.

The International Space Station (ISS) is orbiting at an average altitude of 240 statute miles (385 km).

Early Wednesday morning, the crew sent down video taken Tuesday of the smoke plume rising from the World Trade Center area. The crew also sent down a view of the New York City area filmed shortly before sunrise this morning. Yesterday, Culbertson also extended his condolences to the victims of the New York attack saying, "Our prayers and thoughts go out to all the people there, and everywhere else. Here I am looking up and down the East Coast to see if I can see anything else, and to the people in Washington."

Expedition Three Commander Frank Culbertson reported that he was able to see the rocket climbing into orbit as the station was orbiting 250 miles up, southwest of the Caspian Sea. He said it was the first time he had witnessed such an event from orbit.

Using its Progess-style instrumentation and propulsion stage, Pirs will navigate its way to the ISS for a fully automatic docking planned at 8:08 p.m. CDT on Sunday, September 16.

Culbertson and crewmates Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin spent some time this week preparing for the arrival of Pirs. Preparation tasks included checking out the automated and manual docking systems and configuring the outside cameras to view the Docking Compartment's approach.

The crew also practiced using the manual docking system to complete the rendezvous, which would occur only if there were a problem with the automatic system. Thursday night, flight controllers in Houston and Moscow completed a ground-controlled docking test. In that test, Mission Control in Houston handed over attitude control authority to the Zvezda module's motion control system. Russian flight controllers commanded the Zvezda control thrusters to fire and rotate the station to the docking attitude. After going into a free drift mode, the Russian control system then moved the station back to its normal attitude and handed control back to the U.S control moment gyroscopes.

The new Russian component will serve as an additional docking port for future Russian vehicles arriving at the station, an added stowage area and also as an airlock for the Russian segment. Three spacewalks are to be conducted in October from Pirs by the Expedition Three crew - two by Dezhurov and Tyurin and one by Culbertson and Dezhurov - to electrically mate the Docking Compartment to Zvezda and install more equipment on the outside of the module.

The crew will be shifting its sleep period, going to bed at 7:30 a.m. CDT Sunday, just six and a half hours after awakening. The crew will awaken again at 4 p.m. CDT and immediately begin final preparations for the docking about four hours later.

In addition to preparing for the arrival of the new component, crewmembers have been monitoring many science activities. Oversight of science investigations on the station from the ground is handled by the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, AL. the Human Research Facility is managed by the Johnson Space Center.

The International Space Station (ISS) is orbiting at an average altitude of 240 statute miles (385 km).

As Pirs linked up to the Zvezda module, Expedition Three Commander Frank Culbertson said, "We really felt that", describing the new component settling into its new home.

The docking went according to plan, with the automated docking system controlling a Progress-style instrumentation and propulsion system attached to the rear of the Pirs compartment itself. The 16-foot-long, 8,000-pound module approached the station from below and behind, beginning its automated docking sequence shortly after 5:30 p.m. About 20 minutes later, the station's thrusters moved it to the proper orientation for docking. The station's large solar array wings were positioned to eliminate contamination from the jets on Pirs as it made it final approach.

After the probe-and-drogue docking system completed capture of the incoming module and pulled the two spacecraft together, 12 active latching hooks were driven to their closed position, locking the module securely in place.

After docking, the Expedition Three crew checked to make sure there was a good seal between the station and its new module, then began to equalize pressure between the two craft prior to the first opening of the hatch to Pirs, which was scheduled later this evening. The aft instrumentation and propulsion system locked onto the docking compartment itself will be jettisoned next month to set the stage for spacewalks by the crew to install and activate key systems for the compartment's future operation. Pirs, which is the Russian word for pier, was launched on a Soyuz rocket at 6:35 p.m. CDT Friday. The new Russian component is an additional docking port for future Russian vehicles arriving at the station, an added stowage area and an airlock for the Russian segment. Three space walks are to be conducted in October and November from Pirs by the Expedition Three crew - two by Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin and one by Culbertson and Dezhurov - to electrically mate the Docking Compartment to Zvezda and install more equipment on the outside of the module.

The International Space Station (ISS) is orbiting at an average altitude of 240 statute miles (385 km).

The 16-foot long Pirs, with a 20-foot instrumentation and propulsion segment still attached, is now docked to the Earth-facing port of the station's Zvezda service module. Pirs provides the station with an airlock for use with Russian Orlan space suits and a new docking port. The crew opened the hatch to Pirs on Sunday evening a few hours after it arrived and spent Monday and Tuesday unloading cargo and supporting equipment from the new module. On Wednesday, they removed automated rendezvous equipment, which will be returned to Earth for reuse on later missions.

So far this week, the crew has upgraded the station's Russian software to allow control computers aboard Zvezda to work with the Pirs' systems; installed and activated Pirs' caution and warning system; set up ventilation equipment and lighting in Pirs; and tested the new computer software. All of the activities have gone smoothly, and Pirs is in excellent condition. Later this week, the crew is planned to activate Pirs' communications equipment and conduct further systems tests on the new addition.

As well as working in Pirs, the crew has continued scientific investigations with experiments that study spinal cord reflexes during long-duration spaceflight; gauge the interactions between crewmembers and ground personnel; and characterize a system that isolates sensitive experiments from vibrations on the station. The crew also conducted physical examinations that are done periodically during the flight to gauge the effects of weightlessness.

Oversight of science investigations on the station from the ground is handled by the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, AL. the Human Research Facility is managed by the Johnson Space Center.

A highlight of the work with Pirs will be the jettison of the compartment's instrumentation and propulsion segment. The segment is scheduled to be pyrotechnically detached from Pirs on Oct. 1, backed away from the station, and moved to an orbit that will have it reenter the atmosphere and burn up. That operation will set the stage for a space walk by Dezhurov and Tyurin planned for Oct. 8, the first of three space walks to be performed from Pirs using Russian space suits to continue hooking up and activating the module during Expedition Three.

Just a few days later, on Oct. 19, the crew will relocate its Soyuz spacecraft from its present location at an Earth-facing port on the Zarya module to the new docking port on Pirs. That clears the way for the arrival of a fresh Soyuz return craft with a taxi crew of Commander Victor Afanasyev, Flight Engineer Konstantin Kozeev and Flight Engineer Claudie Haignere. The new Soyuz will be launched Oct. 21 and will dock to the station Oct. 23 for an eight-day stay.

The International Space Station (ISS) is orbiting at an average altitude of 240 statute miles (385 km).

Mission controllers in Moscow fired pyrotechnic devices that activated spring pushrods to eject the 20-foot-long instrumentation and propulsion segment of the Pirs Docking Compartment at 10:36 a.m. Central time today. The segment moved away from the station at a rate of about 4 meters per second until it reached a point far enough away to fire its control system jets without contaminating the station. It then moved ahead and above the station to a distance of 24 kilometers when its thrusters were commanded to fire in a deorbit maneuver sending it into the atmosphere to burn up upon reentry. Left behind is the 16-foot long, 4-ton Pirs, which will serve as a new port for future Russian vehicles arriving at the station and as an airlock from which spacewalks will be conducted from the Russian segment of the outpost.

Today's activity sets the stage for the first space walk from Pirs by Dezhurov and Tyurin on Oct. 8. On that space walk, the pair will use Russian Orlan space suits to connect power and data cables between the Docking Compartment and the Zvezda Service Module. A second space walk is planned Oct. 14, and a third in early November.

Flight control teams in Houston and Moscow are working on a plan to address this week's shutdown of the Russian segment oxygen generation unit called Elektron, and an air-conditioning unit in Zvezda. Russian flight controllers are reviewing data in an attempt to determine the causes of the shutdowns and are working with their American counterparts to provide backup oxygen generation capability until the two Russian components can be repaired or replaced. The crew has about a week's worth of oxygen already in the station atmosphere, and has ample stores of oxygen from the gas tanks on the Quest Airlock as well as solid fuel oxygen candles to last for months. Other maintenance work completed by the crew this week included the replacement of 10 smoke detectors in the Zvezda module. The Elektron shutdown will have no impact on station operations.

Meanwhile, at the Baikonur Cosmodrome in Kazakhstan, a replacement Soyuz return spacecraft is being readied for launch to the station on Oct. 21. The station crew will relocate its current Soyuz spacecraft on Oct. 19 from its present location at an Earth-facing port on the Zarya module to the new docking port on Pirs to clear the way for arrival of the fresh Soyuz and a taxi crew. Commander Victor Afanasyev, Flight Engineer Konstantin Kozeev and Flight Engineer Claudie Haignere will arrive at the station Oct. 23 for an eight-day stay.

The orbiting trio has expanded its scientific investigations into new areas, including a study of the ability of certain chemical compounds to impede the formation of kidney stones. Culbertson set up and served as the first test subject for the experiment this week, which involves ingesting pills that contain either the active compound or a placebo in an effort to determine the value of the countermeasure on a small population. Urine samples are collected, as are detailed information about the crewmember's fluid and food intake. The other two crewmembers also will participate in the experiment. The crew also continued testing the Active Rack Isolation System through a series of "shaker" tests of its ability to protect sensitive experiments from vibrations caused by everyday crew activity. Oversight of science investigations on the station from the ground is handled by the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, AL. the Human Research Facility is managed by the Johnson Space Center.

The station is orbiting at an average altitude of 240 statute miles (385 km).

The first spacewalk by Dezhurov and Tyurin is scheduled to begin around 10 a.m. Eastern time on Monday to hook up a cable between Pirs and Zvezda for telemetry and data transmission from Russian Orlan spacesuits, and to attach handrails, an access ladder and a cargo boom to Pirs, which serves as both a docking port for future Russian spacecraft arriving at the Station, and as an airlock for spacewalks out of the Russian segment of the outpost.

Dezhurov and Tyurin will conduct a second spacewalk on Oct. 15 and Culbertson and Dezhurov will perform a third excursion outside the Station on Nov. 5 to complete the outfitting of Pirs.

Dezhurov, who conducted five previous spacewalks on the Mir Space Station in 1995, and Tyurin, who will be making his first spacewalk, checked out their suits, communications gear and spacewalking tools this week and reviewed plans and timelines. This will be the first external spacewalk staged from the Station without the presence of a visiting Space Shuttle and the 27th spacewalk in support of the assembly of the complex.

On Monday, Dezhurov and Tyurin will close hatches between the Zvezda Service Module Transfer Compartment to which Pirs is docked, and Zvezda's living quarters and the Zarya module prior to depressurizing Pirs for the first time Monday morning. Dezhurov, who will wear the Orlan spacesuit bearing the red stripes, and Tyurin, who will the suit with the blue stripes, will then float out of one of two hatches on Pirs to begin their initial spacewalk. Culbertson will monitor the spacewalk from inside Zarya, to which the Soyuz return craft is attached. He will have access to the U.S. modules to the Station during the spacewalk, but not to Zvezda. The spacewalk is expected to last at least 4 ½ hours.

The new Docking Compartment will be used for the first time on Oct. 19, when the crew temporarily leaves the Station and boards its Soyuz rescue craft to relocate it from its current docked position on the nadir port of the Zarya module to the Pirs. The undocking and redocking of the Soyuz is expected to take about an hour to complete.

That will set the stage for the launch of a fresh Soyuz return craft on Oct. 21 from the Baikonur Cosmodrome in Kazakhstan. A taxi crew consisting of Commander Victor Afanasyev, Flight Engineer Konstantin Kozeev and Flight Engineer Claudie Haignere of CNES, the French Space Agency, will arrive at the station Oct. 23 for an eight-day stay and will return to Earth on Oct. 31 aboard the Soyuz currently at the Station.

The orbiting trio also continued a variety of scientific investigations this week as they moved into the second half of their four-month stay on orbit. Oversight of science investigations on the station from the ground is handled by the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, AL. the Human Research Facility is managed by the Johnson Space Center.

With all of its systems operating in good shape, the station is orbiting at an average altitude of 240 statute miles (385 km).

With Expedition Three Commander Frank Culbertson coordinating activities from inside the ISS, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin opened the hatch on the Pirs Docking Compartment for the first time at 9:23 a.m. Central time (1423 GMT) to hook up telemetry and data cables between Pirs and the Zvezda Service Module to which it linked up to three weeks ago, and to install handrails, an access ladder, a cargo crane, a docking target and a automated navigational antenna.

It was the 27th spacewalk in support of the assembly of the ISS totaling 172 hours, 22 minutes, the third spacewalk staged out of the Station itself, the first external spacewalk from the ISS without the presence of a visiting Space Shuttle and the 100th spacewalk in Russian spaceflight history. It was Dezhurov's sixth spacewalk spanning two flights and the first for Tyurin, who is midway through his first flight into space.

Moving with ease, Dezhurov and Tyurin worked leisurely and methodically through their timeline as television cameras on the Canadarm2 Station robotic arm and a camera in the Soyuz return vehicle captured spectacular views of the spacewalk.

Because the spacewalk ran slightly longer than predicted, Dezhurov and Tyurin were unable to complete one task --- a test of the rigidity of the Strela cargo crane, using Tyurin as a mock payload. Russian flight controllers said the task would be conducted on a future spacewalk by the Expedition Three crew.

With all of the other work successfully completed, the hatch to Pirs was closed at 2:21 p.m. Central time (1921 GMT) and the new compartment was repressurized.

A second spacewalk by Dezhurov and Tyurin is planned for Oct. 15 to mount a series of experiments to the exterior of Zvezda designed to gather data on the effect of exposure to the space environment on engineering materials. A third spacewalk by Culbertson and Dezhurov is scheduled for November 5 to complete the exterior outfitting of Pirs.

The new Docking Compartment will be used for the first time on Oct. 19, when the Expedition Three crew temporarily leaves the Station and boards its Soyuz rescue craft to relocate it from its current docked position on the nadir port of the Zarya module to the Pirs. The undocking and redocking of the Soyuz is expected to take about 30 minutes to complete. -2-

That will set the stage for the launch of a fresh Soyuz return craft on Oct. 21 from the Baikonur Cosmodrome in Kazakhstan. A taxi crew consisting of Commander Victor Afanasyev, Flight Engineer Konstantin Kozeev and Flight Engineer Claudie Haignere representing CNES, the French Space Agency, will arrive at the station Oct. 23 for an eight-day stay and will return to Earth on Oct. 31 aboard the Soyuz currently at the Station.

With all of its systems operating in good shape, the station is orbiting at an average altitude of 240 statute miles (385 km).

The orbiting trio also plans a variety of scientific investigations this coming week as they move into the second half of their four-month stay on orbit. Oversight of science investigations on the station from the ground is handled by the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, AL. the Human Research Facility is managed by the Johnson Space Center.

Meanwhile, in Moscow's Mission Control Center, flight controllers were preparing for a reboost of the station on Thursday, using the unmanned Progress resupply vehicle's engines to increase the altitude of the ISS for the upcoming launch of a new Soyuz return vehicle to the station later this month.

The reboost will consist of two Progress engine firings, at 5:32 a.m. CDT, then again at 10:55 a.m.

Next Monday's spacewalk, which is scheduled to begin around 4:15 a.m. CDT, is designed to mount scientific experiments on the Zvezda Service Module analyzing the effect of micrometeroid impacts and other deteriorating effects of the harsh environment of space on engineering materials. The spacewalk will be staged from the new Pirs Docking Compartment.

Russian and U.S. flight controllers agreed today to burn three oxygen-producing candles on the Station beginning Thursday as a test of the system. The candles, housed in special canisters, would be used in the unlikely event a problem developed with the Russian Elektron oxygen-generation system in Zvezda. The Elektron and the Russian Vozdukh carbon dioxide removal system are functioning normally.

Last Monday's spacewalk accomplished all but one of its goals, which included installing telemetry and data cables between Pirs and Zvezda, to which it linked up to three weeks ago. Dezhurov and Tyurin also installed handrails, an access ladder, a cargo crane, a docking target and a navigational antenna.

Because the spacewalk ran a bit longer than planned, a test of the rigidity of the newly installed Strela cargo crane on Pirs was postponed. It is expected to be performed during the third spacewalk of the Expedition by Culbertson and Dezhurov on Nov. 5. The focus of that spacewalk will be the completion of the exterior outfitting of Pirs.

Because some discoloration was detected by Dezhurov and Tyurin near a set of thrusters on Zvezda during their spacewalk this week, U.S. and Russian station officials agreed to relocate the site of one of the experiments to be installed on Zvezda next Monday. The so-called Kromka experiment was to have been mounted on the zenith, or space-facing area of the Service Module. Now it will be installed on Zvezda's port side. The Kromka experiment is designed to study ways to minimize the dissemination of contaminate particles from spacecraft jet thrusters as they are fired, thus protecting the exterior of future spacecraft.

Crewmembers successfully downlinked the first EarthKam photo from the station on Wednesday. The experiment allows students to select areas of the Earth to be photographed, then submit their targets via the Internet to the EarthKam control center at the University of California at San Diego for uplink to the station. Photos by the remote-controlled camera are sent to the students by the same path.

On Oct. 19, the Expedition Three crewmembers will board the Soyuz capsule attached to the Earth-facing port of the station's Zarya module, undock it and redock it to Pirs. That will clear the Zarya port for the arrival of a replacement Soyuz to be launched Oct. 21 from the Baikonur Cosmodrome in Kazakhstan with a taxi crew, consisting of Commander Victor Afanasyev, Flight Engineer Konstantin Kozeev and Flight Engineer Claudie Haignere of CNES, the French Space Agency. They will dock with the space station Oct. 23. The taxi crew will leave the station Oct. 31 in the Soyuz currently mated to the ISS.

With systems operating well, the station is orbiting at an average altitude of 240 statute miles (385 km).

The Expedition Three crew continues to operate and monitor scientific experiments aboard the station. Oversight of science investigations on the station from the ground is handled by the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, AL. the Human Research Facility is managed by the Johnson Space Center.

Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin opened the hatch on the Pirs Docking Compartment at 4:17 a.m. Central time (917 GMT) and installed three separate sets of experiment equipment designed to learn more about the space environment around their orbiting outpost. Expedition Three Commander Frank Culbertson helped from inside, positioning Canadarm2 so that its cameras could provide television pictures of the workmen as they completed their tasks outside.

Dezhurov and Tyurin moved hand-over-hand to work sites on the Zvezda service module, using handrails to get to a site near the back end of the module. At that location, they installed a Russian experiment called Kromka, which is designed to accumulate any contamination caused by Zvezda steering jets for analysis in the design of better thrusters for future spacecraft.

The duo then moved on to a nearby site, where they assembled a small truss structure and attached three suitcase-sized experiment packages provided by NASDA, the Japanese space agency. The Micro-Particles Capturer will employ aerogel and foam substances to collect naturally occurring micrometeoroids and human-made orbital debris particles. A companion Space Environment Exposure Device will expose a variety of materials such as paint, insulation and solid lubricants to the harsh environment of space.

On their way back to the Pirs hatch, they removed a placard and exposure experiment with the image of the Russian Federation flag, and replaced it with another exposure experiment as part of a commercial agreement.

It was the 28th spacewalk in support of the assembly of the station, increasing the total to 178 hours, 14 minutes, the fourth space walk staged out of the station itself, and the 101st space walk in Russian history. It was Dezhurov's seventh space walk spanning two flights and the second for Tyurin, who is midway through his first flight into space.

With all work successfully completed, Dezhurov and Tyurin re-entered the Pirs compartment and closed the hatch at 10:09 a.m. Central time (1509 GMT).

A third space walk by Culbertson and Dezhurov is scheduled for November 5 to complete the exterior outfitting of Pirs, that was begun by Dezhurov and Tyurin on their first space walk of the expedition on Oct. 8.

The new Docking Compartment docking port will be used for the first time on Oct. 19, when the Expedition Three crew temporarily leaves the station and boards its Soyuz rescue craft to relocate it from its current docked position on the nadir port of the Zarya module to the Pirs. The undocking and redocking of the Soyuz is expected to begin with a separation at 5:56 a.m. CDT (1056 GMT), and take about 30 minutes to complete, with redocking expected at 6:15 a.m. CDT (1115 GMT).

That will set the stage for the launch of a fresh Soyuz return craft on Oct. 21 from the Baikonur Cosmodrome in Kazakhstan. A taxi crew consisting of Commander Victor Afanasyev, Flight Engineer Konstantin Kozeev and Flight Engineer Claudie Haignere representing CNES, the French Space Agency, will arrive at the station Oct. 23 for an eight-day stay and will return to Earth on Oct. 31 aboard the Soyuz currently at the station.

With all of its systems operating in good shape, the station is orbiting at an average altitude of 250 statute miles (395 km).

The orbiting trio will continue its scientific investigations this coming week as it prepares for the relocation of the Soyuz craft. Oversight of science investigations on the station from the ground is handled by the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, AL. the Human Research Facility is managed by the Johnson Space Center.

The crew, Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin, will prepare the station for a period without human occupation before boarding the Soyuz for its relocation. That is done as a precaution, in the unlikely event the crew is unable to return to the station.

The move of the Soyuz will mark the first time the new Pirs, which arrived at the station Sept. 17, will serve as a docking port. The Soyuz will be shifted to prepare for the arrival of a new Soyuz return craft, to be launched Oct. 21 from the Baikonur Cosmodrome in Kazakhstan. The Soyuz can serve as a crew return vehicle at the station for a maximum of about six months.

Today, the crewmembers reviewed relocation procedures and conducted a Soyuz communications check. On Thursday, they will prepare the station for their departure. Also on Thursday they will spend some time stowing items for return to Earth on the Soyuz.

The Soyuz taxi crew, Commander Victor Afanasyev, Flight Engineer Konstantin Kozeev and French Flight Engineer Claudie Haignere, will blast off from Baikonur on Sunday at around 3:59 a.m. CDT for their two-day flight to the station. Haignere is a European Space Agency astronaut carrying out a flight program for CNES, the French Space Agency, under a commercial contract with the Russian Aviation and Space Agency. They will arrive at the station Oct. 23 for an eight-day stay, riding the Soyuz currently docked to Zarya back to Earth on Oct. 31.

Two Expedition Three spacewalks conducted by Dezhurov and Tyurin linked Pirs with data and power cables to the Zvezda service module to which it is docked, and mounted experiment on Zvezda's exterior.

The third and final Expedition Three spacewalk by Culbertson and Dezhurov was moved from Nov. 5 to Nov 8 to give the crewmembers more time to prepare after departure of the Soyuz taxi crew. The spacewalk is designed to complete the exterior outfitting of Pirs that was begun by Dezhurov and Tyurin on their initial spacewalk Oct. 8.

Meanwhile, ISS officials in Moscow and Houston agreed to conduct a test of the solid-fuel oxygen-producing candles on the station on Oct. 29. The test is being performed as the final step in formally extending the expiration date of the candles. The test initially was scheduled to begin Oct. 11, but was postponed to refine procedures. The candles would be used in the unlikely event the Russian Elektron oxygen-generation system in Zvezda malfunctioned.

With systems operating normally, the station is orbiting at an average altitude of 247 statute miles (395 km).

The orbiting trio will continue its scientific investigations this coming week after the relocation of the Soyuz.

Russian "taxi" crew Commander Victor Afanasyev, rookie Flight Engineer Konstantin Kozeev and European Space Agency Flight Engineer Claudie Haignere began their trip to the ISS at 3:59:34 a.m. CDT (8:59:34 GMT) as their Soyuz rocket climbed away from their cloudy desert launch site in Central Asia. At the time of launch, the Expedition Three crew aboard the ISS, Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin were asleep, flying over the border of Cameroon and Sudan in Africa.

Less than nine minutes after launch, the new Soyuz TM-33 craft was in orbit and its solar arrays were deployed, heading for a linkup with the ISS on Tuesday morning.

Afanasyev, making his fourth flight into space, and Haignere, who is in her second flight, are veterans of previous flights on the Mir Space Station.

Haignere is flying for ESA, but representing CNES, the French Space Agency, under a commercial contract with the Russian Aviation and Space Agency. In addition to helping deliver the new Soyuz to Culbertson, Dezhurov and Tyurin, she will be conducting a host of scientific experiments while she and her crewmates spend eight days aboard the ISS.

The "taxi" crew is scheduled to dock to the Zarya module's nadir docking port on Tuesday at 5:41 a.m. CDT (10:41 GMT), with hatches scheduled to be opened about 90 minutes later to enable the two crews to greet each other. Afanasyev and his crew will depart in the Soyuz return craft currently docked to the new Pirs Docking Compartment early in the morning of October 31 for a landing two hours later in Kazakhstan.

The Expedition Three crew aboard the ISS is scheduled to return to Earth in December after their Expedition Four replacements arrive on board during the STS-108 mission aboard the Shuttle Endeavour.

With systems operating normally, the station is orbiting at an average altitude of 247 statute miles (395 km).

The Expedition Three crew will continue its scientific investigations this coming week in concert with the work being performed on board the ISS by the "taxi" crew.

Russian "taxi" crew Commander Victor Afanasyev, rookie Flight Engineer Konstantin Kozeev and European Space Agency Flight Engineer Claudie Haignere docked the Soyuz TM-33 craft to the nadir docking port of the Zarya Control Module at 5:44 a.m. CDT (10:44 GMT) as the Soyuz and the ISS sailed 240 statute miles over Eastern Asia. The successful docking came two days after the crew was launched from the Baikonur Cosmodrome in Kazakhstan.

In the ISS, Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin monitored the docking and prepared for the opening of hatches between the Soyuz and Zarya after leak checks are completed to greet their first visitors since they took over station operations back in August.

Afanasyev, making his fourth flight into space, and Haignere, who is in her second flight, are veterans of previous flights on the Mir Space Station. This is Kozeev's first flight in space.

Haignere is flying for ESA, but representing CNES, the French Space Agency, under a commercial contract with the Russian Aviation and Space Agency. In addition to helping deliver the new Soyuz to Culbertson, Dezhurov and Tyurin, she will be conducting a host of scientific experiments while she and her crewmates spend eight days aboard the ISS.

Within hours after the docking, the visiting crewmembers were scheduled to receive a safety briefing on station systems from Culbertson, before Haignere begins to activate and conduct initial experiments in materials research, life sciences and meteorological phenomena.

The "taxi" trio is scheduled to depart the station next Tuesday night at 7:41 p.m. CDT (1:41 GMT on October 31) in the Soyuz TM-32 craft which arrived at the ISS in April and which is now docked to the new Pirs Docking Compartment. The "taxi" crew will land in the steppes of Kazakhstan several hours later.

The Expedition Three crewmembers are scheduled to return to Earth in December after their Expedition Four replacements arrive on board during the STS-108 mission aboard the Shuttle Endeavour. The shuttle is targeted for launch November 29.

With systems operating normally, the station is orbiting at an average altitude of 247 statute miles (395 km).

The Expedition Three crew will continue its scientific investigations this coming week in concert with the work being performed on board the ISS by the "taxi" crew.

Russian "taxi" crew Commander Victor Afanasyev, Flight Engineer Konstantin Kozeev and European Space Agency Flight Engineer Claudie Haignere undocked the Soyuz TM-32 craft from the Pirs Docking Compartment at 7:39 p.m. CST (1:39 GMT on Oct. 31) as the Soyuz and the ISS sailed 240 statute miles over Eastern Asia near the Russian-Chinese border. The Soyuz TM-32 craft arrived at the ISS on April 30 and was nearing the end of its operational lifetime. A fresh Soyuz is flown to the Station every six months to provide Station residents an assured ride home in the event of an emergency.

The successful undocking came ten days after the "taxi" crew was launched from the Baikonur Cosmodrome in Kazakhstan in the new Soyuz TM-33 craft, which will remain at the ISS until next spring.

The older Soyuz was scheduled to fire its braking rockets in a deorbit maneuver just after 10 p.m. CST (4:00 GMT on Oct. 31) to enable the "taxi" trio to reenter Earth's atmosphere. Landing was scheduled at 10:58 p.m. CST (4:58 GMT, 9:58 a.m. Kazakhstan time Oct. 31) on the Kazakh steppes.

In the ISS, Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin monitored the undocking and began to turn their attention to the final weeks of their four-month mission aboard the complex. They are scheduled to return to Earth in December after being replaced by a Russian commander and two American astronauts.

After saying their final farewells to one another, the two crews closed hatches between the Zvezda Service Module and the Pirs, to which the older Soyuz was docked. The undocking occurred after commands were sent to drive open hooks and latches that held the older Soyuz firmly to the new Pirs docking port. Afanasyev backed the Soyuz away from the ISS to a safe distance for the deorbit burn of the capsule's rockets.

With systems operating normally, the station is orbiting at an average altitude of 247 statute miles (395 km).

Now on their own once again, the Expedition Three crewmembers will continue their scientific investigations this coming week.

Culbertson, making his first spacewalk, and Dezhurov, completing his third spacewalk of this Expedition and his eighth overall, opened the hatch on the Pirs compartment at 3:41 p.m. CST (21:41 GMT) and went right to work, successfully hooking up seven telemetry cables between Pirs and the Zvezda Service Module to complete the installation of the Kurs automated rendezvous system, which will be used to guide approaching Russian vehicles for docking to the Pirs in the future. Pirs serves as both a docking port and an airlock for spacewalks out of the Russian segment of the ISS.

Flight Engineer Mikhail Tyurin, who conducted two previous spacewalks in October with Dezhurov, monitored tonight's activities from inside the ISS and operated the Canadarm2 robotic arm, providing television views for flight controllers in Houston and Moscow and lighting for the spacewalkers as they conducted their tasks.

Standing in foot restraints on the Zvezda, Culbertson and Dezhurov also conducted an inspection of a solar array panel on the service module which failed to deploy properly during its launch on July 12, 2000. The stuck panel has had no impact on station operations or the electrical capability of the Russian segment. Culbertson snapped a number of pictures of the array for analysis by Russian engineers.

Culbertson and Dezhurov wrapped up the spacewalk by testing the capability of the newly installed Russian Strela cargo crane, which was attached to Pirs back on October 8. They used a crank to extend the Strela to its fully extended length of some 30 feet, then raised and lowered the crane from an operator's post at the base of the boom. Strela will be used to maneuver cosmonauts and cargo around the Russian modules of the ISS during future spacewalks.

Finally, the spacewalkers reentered Pirs and closed the hatch at 8:45 p.m. CST (2:45 GMT Tuesday) to complete the 29th spacewalk in support of ISS assembly and the fifth conducted from the station itself. In all, ISS assembly spacewalk activity has now spanned 183 hours and 18 minutes.

The crewmembers plan to relax on Tuesday before resuming a busy schedule Wednesday as they start to pack up all of their gear for their return to Earth in December on the shuttle Endeavour at the conclusion of the STS-108 mission, which will bring their replacements, the Expedition Four crew, to the ISS.

Science work aboard the station will resume this week as well following tonight's spacewalk. Oversight of ISS science investigations is the responsibility of the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, Ala. The Human Research Facility is managed by the Johnson Space Center.

With systems operating normally, the station is orbiting at an average altitude of 247 statute miles (395 km).

Engineers at the Mission Control Center outside of Moscow conducted a series of tests and verified that the exterior connections made by Commander Frank Culbertson and Pilot Vladimir Dezhurov during Monday's space walk had successfully brought the Pirs Docking Compartment's automated Kurs telemetry system to full functionality.

With the help of Flight Engineer Mikhail Tyurin, they spent Wednesday cleaning up, servicing and storing the Orlan spacesuits they had used on the 5-hour, 4-minute space walk. They also spent about 20 minutes answering questions posed by middle school students in Texas and Kansas as part of a regional education conference.

With those activities complete, the trio of space researchers began getting ready for a series of comings and goings, and packing for their impending return home. The Progress 5 resupply craft currently docked to the Zvezda service module is scheduled to undock Nov. 22; it later will be commanded to re-enter the Earth's atmosphere where it will burn up along with refuse being stored inside by the crew this week. Another supply vehicle, Progress 6, is scheduled to launch Nov. 26 from the Baikonur Cosmodrome in Kazakhstan and dock with the station Nov. 28.

All preparations for the launch of Space Shuttle Endeavour and the Expedition Four crew - Commander Yuri Onufrienko and Flight Engineers Dan Bursch and Carl Walz - are on schedule for launch at 6:42 p.m. CST Nov. 29. Mission managers will meet at Kennedy Space Center this Thursday to review all preparations for launch; an official launch target is expected at the conclusion of that meeting. The shuttle crew - Commander Dom Gorie, Pilot Mark Kelly and Mission Specialists Linda Godwin and Dan Tani - joined the new station crew in Florida for a final dress rehearsal of the launch last week.

While visiting the station, the shuttle crew will conduct a space walk to install insulation blankets on the beta gimbal assemblies for the station's large solar array wings. These large swivels, which allow the solar arrays to track the Sun's rays and provide maximum power generation, appear to be experiencing adverse effects related to the extreme temperature swings that occur as the station moves in and out of direct sunlight. These multi-layer insulation blankets are expected to reduce the temperature swings and allow normal operation of the solar arrays.

Meanwhile in Florida, the next major component to be launched to the space station has successfully completed acceptance testing and been moved to a work platform for final closeouts. One last software test remains, and that will be completed in January. The S-zero truss, which will serve as the base section of a framework connecting more large solar array wings, is scheduled for launch on STS-110 in March 2002.

With systems operating normally, the station is orbiting at an average altitude of 247 statute miles (397 km).

Science work aboard the station continues with emphasis on human physiology experiments as the crew nears the end of its time on orbit, and with autonomous microgravity materials research. Overall coordination of the research is the responsibility of the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, Ala. The Human Research Facility is managed by the Johnson Space Center.

The Progress, attached to the docking port at the rear of the Zvezda service module, is the fifth to visit the station. It will undock at 10:06 a.m. CST Thursday, to be deorbited and burn up in the atmosphere with its load of trash and unneeded equipment. Its undocking makes room for Progress 6, scheduled for launch from the Baikonur Cosmodrome in Kazakhstan at 12:24 p.m. CST Monday. The new Progress, filled with fresh supplies, is planned to dock to the station at 1:45 p.m. on Wednesday, Nov. 28.

The Expedition Three trio also began preparations for their return home after about four months in space. They began packing up gear and readying station equipment in anticipation of the arrival of the space shuttle Endeavour, targeted for a launch to the space station from Kennedy Space Center on Nov. 29 at 6:41 p.m. CST on the STS-108 mission. Endeavour is commanded by Dom Gorie. Pilot is Mark Kelly and Mission Specialists are Linda Godwin and Dan Tani.

The major purpose of the mission is bring the Expedition Four crew, cosmonaut and Commander Yury Onufrienko and Astronauts Dan Bursch and Carl Walz, to the station and bring home Expedition Three. Also during the flight, Godwin and Tani will do a spacewalk to install thermal blankets over the station's beta gimbal assemblies of the orbiting laboratory's solar wings, which stretch 240 feet from tip to tip. The assemblies let the wings track the sun to provide maximum power.

Flight controllers at Houston's Mission Control Center have seen in those mechanisms occasional unexpected surges in the power required to turn the wings. They believe the surges are related to extreme temperature swings that occur as the station moves in and out of direct sunlight. Installation of the blankets is expected to reduce the temperature fluctuations and eliminate the "power spikes" seen as the wings pivot.

The spacewalkers will go out of Endeavour's airlock, then get a 50-foot lift from the shuttle's robotic arm. They will have to climb with the blankets another 30 feet to the worksite, atop the P6 Truss and about 80 feet from Endeavour's cargo bay.

With systems operating normally, the station is orbiting at an average altitude of 247 statute miles (397 km).

Human physiology experiments continue to be a focus of crew science activities as the crew prepares for its return home. Autonomous microgravity materials research continued to accumulate scientific experiment run time hours in a variety of disciplines. Overall coordination of the research is the responsibility of the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, Ala. The Human Research Facility is managed by the Johnson Space Center.

At 12:24 p.m. CST (1824 GMT) today, the Progress 6 resupply craft, filled with fresh supplies for the station, launched from the Baikonur Cosmodrome in Kazakhstan and successfully reached orbit nine minutes later. Progress 6 is planned to dock to the station Wednesday at 1:40 p.m. CST (1940 GMT). The Progress 5 capsule that was attached to the docking port at the rear of the Zvezda service module undocked from the station last Thursday and reentered the atmosphere, where it was destroyed.

Today, the crew also tested a manual docking system, called the TORU, which can be used should the Progress 6 experience any problems with its automated docking system as it approaches the aft docking port of the Zvezda Service Module Wednesday. The crew also prepared some of the spacewalking equipment that will be used by STS-108 astronauts Linda Godwin and Dan Tani. Godwin and Tani will conduct a 4-hour spacewalk next week with Endeavour docked to the ISS to install thermal blankets over the station's mechanisms which enable the large U.S. solar wings to rotate to track the sun for the manufacture of electricity for station systems.

Flight controllers at Houston's Mission Control Center have seen those mechanisms experience occasional unexpected surges in the power required to turn the wings. They believe the surges are related to extreme temperature swings that occur as the station moves in and out of direct sunlight. Installation of the blankets is expected to reduce the temperature fluctuations and eliminate the "power spikes" seen as the wings pivot.

The major purpose of the 108 mission, however, is to bring the Expedition Four crew, Russian Commander Yury Onufrienko and U.S. Astronauts Dan Bursch and Carl Walz, to the station and bring home Expedition Three.

With systems operating normally, the station is orbiting at an average altitude of 247 statute miles (397 km).

Human physiology experiments continue to be a focus of crew science activities as the crew prepares for its return home. Autonomous microgravity materials research continued to accumulate scientific experiment run time hours in a variety of disciplines.

The Progress 6 craft, which launched from the Baikonur Cosmodrome in Kazakhstan Monday, gently docked to the aft port of the Zvezda Service Module over Central Asia at 1:43 p.m. CST, completing a two-day automated flight.

On board the station, Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin monitored the docking, and prepared for the opening of the hatch between Zvezda and Progress later today.

The Progress is carrying more than a ton of food, fuel and equipment for the Expedition Four crew, Russian Commander Yury Onufrienko and U.S. Astronauts Dan Bursch and Carl Walz, who are scheduled to be launched aboard the shuttle Endeavour tomorrow night on the STS-108 mission to relieve the Expedition Three crew, which has been in orbit since August. They will be ferried to the ISS by Endeavour Commander Dom Gorie, Pilot Mark Kelly and Mission Specialists Linda Godwin and Dan Tani. Launch from the Kennedy Space Center is scheduled for 6:41 p.m. CST.

With systems operating normally, the station is orbiting at an average altitude of 247 statute miles (397 km).

Human physiology experiments continue to be a focus of crew science activities as the crew prepares for its return home. Autonomous microgravity materials research continued to accumulate scientific experiment run time hours in a variety of disciplines. Overall coordination of the research is the responsibility of the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, Ala. The Human Research Facility is managed by the Johnson Space Center.

With Commander Frank Culbertson watching from inside, Dezhurov and Tyurin worked swiftly to clear the debris during a 2-hour, 46-minute spacewalk, the fourth of the expedition and the 30th devoted to ISS assembly and maintenance. With the seal removed, Russian flight controllers commanded the Progress' docking probe to retract fully, and a hard mate between the two craft was completed at 8:54 a.m. CST. Progress had initially docked with Zvezda last Wednesday, but hooks and latches between the craft failed to fully engage because of the debris, apparently left on the docking interface when an old Progress resupply vehicle was jettisoned on Nov. 22.

Dezhurov, who was making the 9th spacewalk of his career, and Tyurin, who was conducting the 3rd spacewalk in his first flight into space, exited the Pirs Docking Compartment at 7:20 a.m. CST with one goal in mind --- clearing the obstruction which prevented the Progress from completing a hard docking and a tight seal with Zvezda last Wednesday at the completion of a two-day free flight following its launch. The docking problem postponed last week's launch of Endeavour to bring the new residents --- the Expedition Four crew --- to the ISS.

Once they made their way to the aft end of Zvezda, Dezhurov used a tool to cut the seal, which then was easily stripped away from the circumference of the aft docking port of the Service Module. With the debris removed, Russian flight controllers initiated the mating of Progress and Zvezda, completing the repair effort. With their work completed, Dezhurov and Tyurin took a number of pictures of the debris and the docking interface between Progress and Zvezda, and returned to Pirs, closing the hatch at 10:06 a.m. CST.

The spacewalk now sets the stage for Endeavour's launch at 4:45 p.m. CST Tuesday on an 11-day mission to deliver the next trio of residents to the ISS as well as several tons of equipment and food. The launch was delayed from last Thursday to enable Russian flight controllers to plan for the contingency spacewalk. Endeavour's launch is scheduled on the third anniversary of its launch in 1998 on the first ISS assembly flight which mated the Unity connecting node to the Zarya Control Module.

The International Space Station is orbiting at an average altitude of 247 statute miles (397 km).

Human physiology experiments continue to be a focus of crew science activities as the crew prepares for its return home. Autonomous microgravity materials research continued to accumulate scientific experiment run time hours in a variety of disciplines.

The station was about 250 statute miles above the central Indian Ocean as Endeavour rocketed away from Launch Pad 39-B at the Kennedy Space Center, FL, on time at 4:19 p.m. CST. Endeavour will close in on the station for the next two days and dock with the complex on Friday to begin a week-long stay.

Endeavour is commanded by Dom Gorie with Mark Kelly serving as pilot. Mission Specialists are Linda Godwin and Dan Tani. Also aboard Endeavour are station Expedition Four crew members Commander Yuri Onufrienko and Flight Engineers Carl Walz and Dan Bursch, who are beginning more than five months in orbit.

Endeavour will bring home the Expedition Three station crew, Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin, who have been aboard the station since mid-August. In addition to the new crew, Endeavour is carrying more than three tons of food, supplies and equipment in the Raffaello logistics module to the orbiting outpost.

Endeavour's crew will spend the next few hours unpacking equipment, setting up computers and conducting the first of periodic engine firings that will occur over the next two days to refine the shuttle's approach to the station. The shuttle crew will begin a sleep period at 11:19 p.m. CST and will be awakened at 7:19 a.m. CST Thursday. On Thursday, Endeavour's crew will check out the shuttle's equipment and systems that will be needed for Friday's final approach and docking to the International Space Station. Docking is planned for just after 2 p.m. CST Friday. On Saturday, the Raffaello module will be lifted from the shuttle payload bay using Endeavour's robotic arm and attached to a station berthing port to be unloaded. Godwin and Tani are planned to conduct a four-hour space walk on Monday to install insulation around two solar array rotation mechanisms. Raffaello will be returned to the shuttle payload bay later in the mission and brought back to Earth.

In addition to a new station crew and supplies, Endeavour is carrying a host of scientific investigations, including experiments from space agencies, schools and universities across the United States, Europe and South America as well as a small satellite that has involved more than 25,000 students in 26 countries.

Endeavour Commander Dom Gorie and Pilot Mark Kelly fired the shuttle's steering engines and jets twice today to adjust course toward the station. Gorie and Kelly also checked out the rendezvous systems and navigation aids Endeavour will require for its final approach to the orbiting complex, finding everything in good shape. Later, Kelly, assisted by Mission Specialist Linda Godwin, powered up the shuttle's robotic arm to check its operation and to use its television cameras to survey the Raffaello cargo module and experiments housed in Endeavour's payload bay. On Saturday, the robotic arm will be used by Kelly to attach Raffaello to a station berthing port so that more than three tons of food, supplies and experiments it holds can be moved aboard the complex.

Godwin and Mission Specialist Dan Tani also powered up and tested the space suits they will wear for a four-hour space walk on Monday, finding all the equipment in good condition. Godwin and Tani will install extra insulation on mechanisms that rotate the station's solar arrays during the excursion. Also today, Godwin powered up Endeavour's docking mechanism and extended it into position to await contact with the station. The Expedition Four crew members aboard Endeavour, en route to begin an almost six-month mission aboard the station, assisted the shuttle crew today with preparations and worked with several secondary scientific investigations.

All crew members on the shuttle had a few hours off-duty this evening, providing a short break in advance of what will be a busy week docked with the International Space Station. Endeavour is scheduled to dock at the station at about 1:59 p.m. CST Friday. The final phase of the approach begins with an engine firing by Endeavour at about 11:44 a.m. CST, when the shuttle is some nine miles behind the complex. Gorie will take over manual control of Endeavour's approach just after 1 p.m. CST, when Endeavour moves within a half-mile underneath the station. Gorie will fly the shuttle closer, maneuvering a quarter-circle around the station to dock at the complex's front port. Hatches will be opened between the two spacecraft and the crews will greet one another around 4 p.m. CST.

Meanwhile, aboard the station today, the Expedition Three crew, Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin, spent their final solo day in flight packing for the trip home. The station crew, completing more than four months in space, also continued to unload a Russian cargo supply craft that docked to the station last week.

Endeavour's crew will begin a sleep period at 10:19 p.m. CST and awaken at 6:19 a.m. CST on Friday. Endeavour is now about 3,500 statute miles behind the station, closing in 260 miles with each orbit of Earth.

The crew, Commander Dom Gorie, Pilot Mark Kelly, Mission Specialists Linda Godwin and Dan Tani, Expedition Four Commander Yury Onufrienko, Flight Engineer Carl Walz and Flight Engineer Dan Bursch, was awakened by the song "Soul Spirit" and "Put a Little Love in Your Life," sung by Bursch's daughter and her second-grade classmates.

The crew will spend the day preparing shuttle systems for docking with the International Space Station, which is scheduled for about 2 p.m. CST Friday. Preparations include powering up the shuttle's robotic arm and checking out the airlock and the space suits that will be used on Monday's planned four-hour spacewalk by Godwin and Tani to place thermal blankets on the motors that rotate the solar arrays atop the P6 truss.

In addition to performing the spacewalk, other activities during the mission include a crew exchange on board the space station Saturday and the transfer of more than three tons of cargo. The cargo, housed in the Raffaello logistics module that will be attached to the Unity module, includes food, supplies and equipment that the Expedition Four Crew will use during its stay on the station. The Expedition Three crew, Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin have been living aboard the space station since mid-August and will return home on Endeavour.

Also on board Endeavour is a host of scientific investigations, including experiments from other space agencies, schools and universities across the United States, Europe and South America. Two experiments located in the Multiple Application Customized Hitchhiker-1 (MACH-1) in the shuttle payload bay had already completed 15% and 10% of their mission objectives by the time the crew went to sleep last night. Those experiments are the Capillary Pumped Loop Experiment (CAPL) and the Prototype Synchrotron Radiation Detector (PSRD) respectively. The CAPL demonstrates a multiple evaporator capillary pumped loop system and the PSRD measures cosmic ray background data.

Endeavour's crew - Commander Dom Gorie, Pilot Mark Kelly, Mission Specialists Linda Godwin and Dan Tani, Expedition Four Commander Yury Onufrienko, and Flight Engineers Carl Walz and Dan Bursch - will quickly move into their final rendezvous activities today, bringing the shuttle to a position about 9 ½ miles behind the International Space Station about 11:44 a.m. today.

From that position behind the station, Gorie and Kelly will command Endeavour 's jets in a final major rendezvous maneuver to begin the final phase of the approach for docking. Endeavour will close the final miles to the station during the next orbit of the Earth, about 90 minutes.

As Endeavour approaches the station, the on-board rendezvous radar system will begin tracking the station providing distance and closing rate information to the crew. During the approach, the shuttle can perform up to four, small mid-course corrections at regular intervals. Just after the fourth burn, Endeavour will be about one-half mile below the station. Gorie will take over manual control of the approach, slowing Endeavour's approach and maneuvering to a point about 600 feet directly beneath the station. There he will begin a quarter-circle of the station, slowly moving to a position in front of the complex, in line with its direction of travel.

Once Endeavour has firmly docked to the station, and required leak checks are complete, the hatches between the spacecraft will open around 4 p.m. allowing Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin to greet their newest guests.

Culbertson, Dezhurov and Tyurin began their formal residency on the station on August 13 as their custom-made Soyuz seat liners were installed on the Soyuz return vehicle. Their residency will officially end once those seat liners are transferred to Endeavour and the Expedition Four crew's seat liners are installed in the Soyuz on Saturday.

With the new Expedition Four station crew of Commander Yury Onufrienko and Flight Engineers Carl Walz and Dan Bursch looking on from Endeavour's flight deck, shuttle Commander Dom Gorie brought Endeavour to a gentle linkup with the ISS at 2:03 p.m. CST as the two craft sailed over England. Within minutes, Pilot Mark Kelly and Mission Specialists Linda Godwin and Dan Tani began to conduct post-docking checks of the mechanical interface between Endeavour and the station's Destiny Laboratory prior to the opening of the hatches on the two vehicles. At first, the shuttle's docking ring and the docking mechanism on the ISS did not align properly, but after allowing the two craft to dampen their relative motion against one another, the vehicles were hard mated for a week of joint operations by the ten crewmembers.

On board the ISS in their 119th day in space and their 116th day aboard the station, Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin watched as their replacements arrived for the start of more than five months of orbital duty. The only other visitors for the Expedition Three crew during its increment arrived on the ISS in October to deliver a new Soyuz return vehicle.

The hatches were opened between Endeavour and the ISS' Destiny Laboratory at 4:42 p.m. CST, enabling the ten crewmembers to greet one another. Onufrienko, Walz and Bursch will officially take over command of the ISS Saturday afternoon from Culbertson, Dezhurov and Tyurin after transferring custom made Soyuz seatliners and conducting leak checks to their spacesuits.

The crews now begin a busy week of handing over station responsibilities and unloading tons of supplies brought to the complex by Endeavour. Saturday's activities will be highlighted by Kelly's use of the shuttle's robotic arm to hoist the Italian-built Raffaello logistics module from Endeavour's payload bay and attach it to a station berthing port. Raffaello will stay attached to the station for most of the week while it is unloaded. The crews will begin a sleep period at 10:19 p.m. CST today and awaken at 6:19 a.m. CST on Saturday.

The transfer of the Expedition Four seatliners to the Soyuz return vehicle attached to the station marked the official exchange of crews. Culbertson reported that his crew had completed the exchange and that Expedition Four Commander Yury Onufrienko and Flight Engineers Carl Walz and Dan Bursch had become official station residents at 4:11 p.m. CST. Handover briefings between the two crews will continue for the duration of docked operations.

While the crew exchange was under way, aboard Endeavour Pilot Mark Kelly and Mission Specialist Linda Godwin used the shuttle's robotic arm to lift the Raffaello Multi-Purpose Logistics Module from the shuttle payload bay and attach it to a berth on the station's Unity node. Raffaello was removed from the payload bay at 11:01 a.m. CST and secured in place on the station at 11:55 a.m. CST. The hatch to Raffaello was opened and the crews began unloading the cargo module just before 7:30 p.m. CST. Over the course of the next several days, the crews will work together to transfer approximately three tons of food and supplies from Raffaello to the station.

The crews will begin a sleep period at 10:19 p.m. CST and awaken at 6:19 a.m. CST Sunday. Sunday's work will focus on unloading Raffaello, continuing an exchange of information between the two station crews and some preparatory work for a space walk planned to take place Monday by shuttle astronauts Godwin and Dan Tani. Endeavour and the International Space Station remain in excellent condition with no significant systems problems of concern to Mission Control.

Pilot Mark Kelly and Mission Specialist Linda Godwin will work together to remove the Raffaello Multi-Purpose Logistics Module from Endeavour's payload bay and attach it to the Unity node of the International Space Station. Over the course of about three hours, Kelly will use the shuttle's robotic arm to gently lift Raffaello from the payload bay and maneuver it into place, securing it to the Earth-facing berthing port on the Unity module about 12:39 p.m. CST today.

As Kelly works to install the Raffaello module, the formal exchange of space station crews will occur as the Expedition Three crew - Commander Frank Culbertson, Pilot Vladimir Dezhurov, and Flight Engineer Mikhail Tyurin - and the Expedition Four crew - Commander Yury Onufrienko, and Flight Engineers Carl Walz and Dan Bursch, exchange their customized seat liners in the Russian Soyuz spacecraft. As each Expedition Four crew member's seatliner is installed in the Soyuz and checked out, he officially becomes a resident of the space station with the Expedition Three crew member moving over to become a member of the Endeavour crew. Handover briefings between the crews will continue throughout docked operations.

Mission Specialist Dan Tani will focus his attention on transferring equipment from Endeavour to the space station while Commander Dom Gorie tends to vehicle operations.

The three commanders onboard - Gorie, Culbertson and Onufrienko - along with Endeavour's Pilot Kelly will participate in media interviews at 3:44 p.m. CST. MSNBC, CBS News and WAGT-TV in Augusta, Georgia will have the opportunity to interview the crewmembers in the station's Destiny laboratory.

Two payload bay experiments located in the Multiple Application Customized Hitchhiker-1 (MACH-1) facility have already completed 50% and 76% of their mission objectives. Those experiments are the Capillary Pumped Loop Experiment (CAPL) and the Prototype Synchrotron Radiation Detector (PSRD) respectively. The CAPL demonstrates a multiple evaporator capillary pumped loop system and the PSRD measures cosmic ray background data.

A New York firefighter presented Pilot Mark Kelly with today's wake-up music when Kelly visited the World Trade Center site with former NASA Administrator Dan Goldin shortly after the September 11 attacks. All the astronauts and cosmonauts on board Endeavour and the International Space Station will take time today to remember the victims, their families and rescue workers in a special message from space, at 4:24 p.m. CST today.

Commander Dom Gorie, Kelly, Mission Specialists Linda Godwin and Dan Tani, Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin, Expedition Four Commander Yury Onufrienko, and Flight Engineers Carl Walz and Dan Bursch will all gather in the Destiny laboratory aboard the station to display a U.S. flag and take a moment to honor the victim's families and survivors of the attacks.

Coordinated through the "Flags for Heroes and Families" campaign, which was initiated by Former NASA Administrator Dan Goldin, several American flags are being flown aboard the space shuttle Endeavour. Those flags include 6,000 small U.S. flags, one U.S. flag that was recovered from the debris of the World Trade Center, a Marine Corps flag that was retrieved from the Pentagon, and an American flag from the State of Pennsylvania. Also onboard, is a large New York Fire Department flag, 23 replica New York Police Department shields, and 91 New York Police Department patches. Those items are stowed away in the shuttle and will be distributed upon Endeavour's return to Earth.

The crew's activities today will focus on continuing transfer of several hundred pounds of equipment and supplies from the Raffaello Multi-Purpose Logistics Module that was attached to the station yesterday. Transfer of equipment, supplies and experiments to and from the shuttle mid deck is already complete. Today, Godwin and Tani will also check out and prepare the tools they will use for Monday's scheduled spacewalk.

Aboard Endeavour are 6,000 small United States flags that will be distributed to heroes and families of the victims of the attacks after the shuttle returns to Earth. Also aboard are a U.S. flag that was found at the World Trade Center site after the attacks, a U.S. flag that has flown above the Pennsylvania state capitol, a U.S. Marine Corps Colors flag from the Pentagon, a New York Fire Department flag, and a poster that includes photographs of firefighters lost in the attacks.

Shuttle Commander Dom Gorie said the flag carried aboard Endeavour which came from the World Trade Center elicited especially poignant thoughts among the crew.

"This was found among the rubble and it has a few tears in it. You can still smell the ashes. It is a tremendous symbol of our country," Gorie said. "Just like our country, it was a little battered and bruised and torn, but with a little bit of repair it is going to fly as high and as beautiful as it ever did. And that is just what our country is doing."

International Space Station Expedition 3 Commander Frank Culbertson and his crew -- cosmonauts Vladimir Dezhurov and Mikhail Tyurin -- were in orbit Sept. 11 and will be on their way home to Earth when Endeavour departs the station next week. The space station flew above New York the morning of Sept. 11, and the crew could see evidence of the attacks out the windows.

"That was quite a disturbing sight, as you might imagine, to see my country under attack," Culbertson said. "All of us were affected by that day greatly.

"To all of those who lost loved ones, to all of those who worked so hard to help people survive, and to the people who are trying so hard to stop this threat, we wish you the best. We have thought about you often over the last three months that we've been here ... and we will continue to keep you in our thoughts," Culbertson added. "We will continue, I hope, to set a good example of how people can accomplish incredible things when they have the right goals. We will continue to think of how we can improve peace around the world and how we can improve knowledge, and hopefully that will bring people together."

While the unloading of almost three tons of new food, supplies and experiments continued today, Culbertson's crew also conducted a handover of station work to the oncoming Expedition Four crew -- Commander Yury Onufrienko and Flight Engineers Dan Bursch and Carl Walz. Also today, Endeavour fired its steering jets gradually over the course of an hour to increase the station's altitude by about two statute miles, the first of three similar reboost maneuvers planned for this week's mission.

The hatches were closed between the shuttle and the station, with only the Expedition Four crew remaining aboard the station, at about 6:43 p.m. CST today in preparation for a space walk planned from the shuttle on Monday. Closing the hatch allows the cabin pressure on the shuttle to be lowered slightly, part of a protocol that protects space walkers from decompression sickness when they go to the low pressure, pure oxygen space suits.

Astronauts Linda Godwin and Dan Tani are scheduled to exit the shuttle airlock at 11:24 a.m. CST Monday to begin four hours of work outside to add insulation to mechanisms that rotate the station's solar arrays. After the space walk is completed Monday afternoon, the hatches between Endeavour and the station will be reopened.

The crews begin a sleep period at 10:19 p.m. today and awaken at 6:19 a.m. on Monday.

The focus of activities aboard Endeavour today will be on the planned four-hour spacewalk to be conducted by Godwin and Dan Tani. Godwin and Tani will exit the shuttle's airlock about 11:24 a.m. and will be carried about half way up the truss of the space station by the shuttle's robotic arm, operated by Pilot Mark Kelly. Commander Dom Gorie will coordinate efforts as the two spacewalkers maneuver hand-over-hand to their worksite location at the top of the P6 truss, some 80 feet above Endeavour's cargo bay.

The prime objective of the spacewalk is to place insulating blankets on the two Beta Gimbal Assemblies (BGA) that control the rotation of the solar arrays as they track the sun. The thermal blankets will protect the BGAs from temperature variances experienced in space, which has been leading to current spikes from the motors inside the BGAs. Once that task is complete, the spacewalkers will perform some get-ahead-tasks including retrieving tools from an outside pouch and bringing them inside for use during a spacewalk on the next mission to the space station early next year.

With hatches between the two spacecraft closed for today's space walk, the Expedition Four Crew, Commander Yury Onufrienko, and Flight Engineers Dan Bursch and Carl Walz will continue transferring equipment and supplies from the Raffaello Multi-Purpose Logistics Module to the station. This is the crewmembers' first day alone on the space station after exchanging places with the Expedition Three Crew, Commander Frank Culberston, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin, on Saturday.

Shortly after the crews onboard Endeavour and the International Space Station were awakened, they prepared to take a moment to pay tribute to those who lost their lives in the attacks on America on September 11, as part of President Bush's "Anthems of Remembrance" event. The event will take place at 7:46 a.m. CST, the exact moment of the attack three months ago.

The United States and Russian national anthems will be played in the shuttle and station flight control rooms in Mission Control and aboard the shuttle and the space station. The three commanders aboard the two spacecraft - Shuttle Commander Dom Gorie, Expedition Three Commander Frank Culbertson, and Expedition Four Commander Yury Onufrienko, will share their personal thoughts as well as play a special pre-recorded message from the rest of the crew currently in orbit.

Onufrienko, along with Expedition Three crew members Vladimir Dezhurov and Mikhail Tyurin, will take time today to talk with Russian media located at the mission control center outside Moscow in an interview scheduled to begin at 9:24 a.m. Later in the day, the full crews - Gorie, Onufrienko, Culbertson, Pilot Mark Kelly, Mission Specialists Linda Godwin and Dan Tani, Expedition Four flight engineers Carl Walz and Dan Bursch, along with Dezhurov and Tyurin - will have an opportunity to talk with American news media during a crew news conference scheduled for 2:04 p.m.

A ceremony to mark the change of command from Culbertson to Onufrienko will take place at 2:48 p.m. today. Culbertson, in his 123rd day in space, will ceremoniously pass command of the space station on to Onufrienko, its newest commander. The official crew exchange occurred Saturday, December 8 with the transfer of Soyuz seatliners for each crew member. Today's event continues the tradition begun by Expedition One Commander Bill Shepherd in March of this year, when he relinquished command of the ISS to Expedition Two Commander Yury Usachev.

The crews will also continue transferring equipment and supplies from the Raffaello Multi-Purpose Logistics Module to the space station for later use by the Expedition Four Crew. About 4,000 pounds of cargo has already been transferred from Raffaello to the station.

When the day began, the crews had already completed unloading more than 4,600 pounds of food, clothes, supplies and equipment from Raffaello, about 95 percent of the module's total cargo. They also had completed moving the 1,000 pounds of station gear and experiments that were launched in Endeavour's cabin to the orbiting complex.

In repacking the cargo module and Endeavour with unneeded equipment bound for Earth, the crews have loaded more than 1,800 pounds of material into Raffaello, almost half the amount expected by the time the packing is completed. Packing of Raffaello and Endeavour will continue on Thursday. On Friday, Raffaello will be detached from the station and moved back into Endeavour's payload bay for the trip home.

In addition, Endeavour's crew - Commander Dom Gorie, Pilot Mark Kelly, Mission Specialists Linda Godwin and Dan Tani, and offgoing station crew members Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin - assisted the new station Expedition Four crew in replacing most components of a station treadmill today. Expedition Four - Commander Yury Onufrienko and Flight Engineers Dan Bursch and Carl Walz - will use the new treadmill almost daily during their five and a half months aboard the station. The job went smoothly and the crews finished several hours ahead of schedule, loading the old treadmill parts into Raffaello to be refurbished on Earth and, eventually, reused. A third and final scheduled reboost of the station by Endeavour also was completed today. The three boosts performed during the mission, each accomplished by a gradual, hour-long periodic firing of the shuttle steering jets, have raised the station's altitude by a total of almost 9 statute miles. The station's average altitude is now about 241 statute miles.

On Thursday, the crews will continue maintenance work as well as packing, replacing a faulty compressor in a Russian air conditioner on the station. Although the new crew officially took over aboard the station on Saturday, a formal handover ceremony also is planned for the two station crews at 2:04 p.m. CST Thursday.

The crews begin a sleep period at 10:19 p.m. CST today and awaken at 6:19 a.m. CST Thursday.

Flight Day 8 for Endeavour's crew began with a wake-up call from Mission Control offering a rendition of "Fly me to the Moon", sung by Oliver "Ollie" O'Regin for Dan Tani.

The astronauts and cosmonauts have transferred more than 5,000 pounds of supplies and material from Endeavour's middeck, and the Raffaello Multi-Purpose Logistics Module to the station. Today, the crews will focus on packing up the Raffaello module with items bound for a return trip to Earth. Raffaello will be detached from the Unity module of the station onFriday and reberthed in Endeavour's cargo bay for its ride home.

With a one-day extension to the mission, Endeavour's crew - Commander Dom Gorie, Pilot Mark Kelly and Mission Specialists Linda Godwin and Tani - will spend today assisting the Expedition Four crew - Commander Yury Onufrienko and Flight Engineers Expedition Dan Bursch and Carl Walz - with maintenance tasks on board the station, including the replacement of some of the components of the on-board treadmill. Tomorrow, the crew will replace a failed compressor in one of the air conditioners in the Zvezda Service Module. As the Expedition Three crew - Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin - prepare for a return to Earth on Monday, they continue a series of handover briefings to acquaint the newest resident crew with their orbital home.

Endeavour is currently scheduled to undock from the ISS on Saturday morning, with landing planned for early Monday afternoon at the Kennedy Space Center.

The crew has already unloaded almost three tons of station food, clothes, experiments and other gear that was launched aboard Endeavour and Raffaello. Early today, the crews had also completed more than 70 percent of the repacking of Raffaello for the trip home, loading the cargo module with trash and gear from the offgoing station crew's mission such as individualized Soyuz space suits and seat liners.

The 10 astronauts and cosmonauts aboard the shuttle-station complex gathered this afternoon in the station's Destiny Laboratory for a formal change of command ceremony as Expedition Three ends and Expedition Four begins. The new crew officially took over duties aboard the station on Saturday. Expedition Three -- Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin -- spent 117 days as the station crew. Expedition Four -- Commander Yury Onufrienko and Flight Engineers Dan Bursch and Carl Walz -- will remain aboard the complex until May 2002.

On Friday, the crews will close the hatch on Raffaello and Endeavour Pilot Mark Kelly will use the shuttle's robotic arm to detach it from the station and lower it back into the shuttle's payload bay to be brought back to Earth. The crews also will continue maintenance work on the station, replacing a faulty air conditioner compressor. Endeavour will undock from the station on Saturday.

Endeavour and the International Space Station remain in good shape, orbiting at an average altitude of 241 statute miles. Last night, the crew and Mission Control noted a transient problem with one of the shuttle's three inertial measurement units (IMUs), the primary navigation units for the shuttle. Only two of the three IMUs were on line at the time, with the third unit off line to save electricity. The IMU that experienced a problem, designated IMU 2, was immediately taken off line and the third IMU brought on line. IMU 2 has operated well since then, but it has remained off line and is considered failed by flight controllers. The loss of one IMU has no impact on Endeavour's mission, and the other two units are operating in excellent condition. Endeavour could operate well on only one IMU if needed.

Endeavour's crew will begin a sleep period at 9:19 p.m. CST today and awaken at 5:19 a.m. CST on Friday.

Today's agenda for the shuttle crew - Commander Dom Gorie, Pilot Mark Kelly, and Mission Specialists Dan Tani and Linda Godwin - will focus on packing up the Raffaello Multi-Purpose Logistics module with unneeded equipment and supplies for the return flight home. Raffaello will be detached from the Unity module of the International Space Station tomorrow and reberthed in Endeavour's cargo bay for its ride back to Earth. Endeavour is currently scheduled to undock from the station on Saturday morning, with landing planned for early Monday afternoon at the Kennedy Space Center.

The Expedition Three crew will also continue handover activities with the Expedition Four crew - Commander Yury Onufrienko, and Flight Engineers Dan Bursch and Carl Walz.

A ceremony to mark the change of command from Culbertson to Onufrienko will take place at 3:09 p.m. CST. Culbertson, in his 125th day in space, will formally hand command of the space station on to Onufrienko, it's newest commander. The official crew exchange occurred Saturday, December 8 with the transfer of Soyuz seatliners for each crew member. Today's event continues the tradition begun by Expedition One Commander Bill Shepherd in March of this year, when he relinquished command of the ISS to Expedition Two Commander Yury Usachev.

With the crew completing the stowage of Raffaello for the trip home, work to replace a faulty compressor in an air conditioner unit in the Zvezda Service Module was deferred until tomorrow morning, concurrent with the closing of the hatch to the Raffaello module prior to its detachment from the ISS.

Raffaello has been loaded with unneeded equipment, as well as gear from the returning Expedition Three crewmembers, including their custom Soyuz spacesuits and seat liners. The hatch between Raffaello and the space station will be closed about 10 a.m. CST today once final transfers are complete. About 1:20 p.m., Pilot Mark Kelly and Mission Specialist Linda Godwin will begin the process of detaching Raffaello from the station using the shuttle's 50-foot long robotic arm. The process of removing Raffaello from the station and carefully placing it back in Endeavour's payload bay is expected to be complete shortly after 3:30 p.m.

The two station commanders - Frank Culbertson and Yury Onufrienko - will continue their handover briefings even as they prepare for Endeavour's scheduled departure Saturday morning. Expedition Three crew member Vladimir Dezhurov will join Onufrienko in some final maintenance work on the station this morning replacing a faulty compressor in an air conditioner unit in the Zvezda Service Module.

All of the crew members - Endeavour Commander Dom Gorie, Kelly, Godwin and Dan Tani, along with Expedition Three crew members Culbertson, Dezhurov and Mikhail Tyurin and the Expedition Four crew, Onufrienko, Dan Bursch and Carl Walz - will meet late in the day today for a final briefing in preparation for Endeavour's departure tomorrow. Following final farewells tomorrow morning, about 7:30 a.m., the hatches between Endeavour and the station will be closed for a final time during this mission. Endeavour will undock from the station at 10 a.m. Saturday, and after a brief fly-around of the station, a final engine burn will mark Endeavour's departure from the station, leaving the Expedition Four crew on board for a planned five-month stay.

Endeavour's crew was awakened at 5:12 a.m. today by a traditional Russian song, "My Sweetheart," played for Onufrienko, Dezhurov and Tyurin. The Expedition Four crew was awakened about a half-hour later with a wake-up tone on board the station.

Endeavour and the International Space Station remain in good shape, orbiting at an average altitude of 241 statute miles. Wednesday, the crew and flight control teams noted a transient problem with one of the shuttle's three inertial measurement units (IMUs), the primary navigation units for the shuttle. That IMU, designated IMU2, experienced about an hour-long "drift rate," subsequently returning to normal operation. Flight controllers have taken IMU2 off line and declared it "failed," though it has performed normally since the initial problem was observed. The remaining two IMUs on board are performing well and the loss of a single IMU has no impact on Endeavour's mission or planned landing. Endeavour could operate well on only one IMU if required.

Endeavour will leave the station with a new crew and almost three tons of new food, supplies, experiments and equipment. Endeavour will bring home the offgoing Expedition Three station crew -- Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin -- and more than two tons of unneeded station gear, food containers, clothes, and other cargo. The station's Expedition Four crew -- Commander Yury Onufrienko and Flight Engineers Dan Bursch and Carl Walz -- will remain aboard the outpost until May 2002.

Endeavour Pilot Mark Kelly used the shuttle's robotic arm to detach the Raffaello logistics carrier from the station today and reberth it in Endeavour's payload bay. Raffaello was latched back into the shuttle bay at 4:44 p.m. CST. This morning, Dezhurov and Onufrienko worked together to replace a faulty air conditioner compressor in the station's Zvezda living quarters module as the crews completed cargo transfer activities.

Flight controllers are planning slight changes to Endeavour's departure from the station Saturday, allowing time for a small jet firing by the shuttle to boost the station's future path away from a piece of space debris that could pass near the complex on Sunday. Mission Control was notified early today that a spent Russian rocket upper stage launched in the 1970s could pass within three miles of the station if Endeavour did not perform the engine firing. With the shuttle reboost now planned on Friday, the station is predicted to instead pass more than 40 miles away from the debris on Sunday.

The new plan for Saturday's activities will have the station and shuttle crews bid farewell to one another and close hatches between the two spacecraft at about 7:30 a.m. CST. Endeavour will pulse its steering jets gradually for about 30 minutes beginning at about 8:55 a.m. CST to raise the station's altitude by almost three-quarters of a mile. Endeavour will then undock from the station at about 10:37 a.m. CST. Because of the changes, Endeavour will not perform a full-circle flyaround of the station after undocking. Instead, Endeavour will undock from the station and fly only a quarter circle of the complex, to a point about 400 feet directly above the station where it will fire its engines at about 11:20 a.m. CST to depart the vicinity of the oribting outpost.

Endeavour's crew will begin a sleep period today at 8:19 p.m. CST and awaken at 4:17 a.m. CST Saturday.

Endeavour undocked from the station at 11:28 a.m. CST as the spacecraft flew 240 statute miles above the Indian Ocean off the Australian coast. Pilot Mark Kelly flew Endeavour through a half-circle of the station before firing jets to leave the vicinity.

Before undocking, Endeavour's jets were fired in a series of small pulses beginning at 8:55 a.m. CST to raise the altitude of the station about three quarters of a mile. The maneuver ensures the station will fly well clear of an old Russian rocket body that had been predicted to potentially pass close to the complex later this weekend. The final small reboost by the shuttle, coupled with three larger reboosts done earlier in the week, means the station was raised a total of more than nine statute miles by Endeavour.

The new station crew, Expedition Four Commander Yury Onufrienko and Flight Engineers Dan Bursch and Carl Walz, said goodbye to Endeavour's crew and the departing Expedition Three crew and closed hatches between the spacecraft at 7:16 a.m. CST. Now en route home, Expedition Three Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin completed 117 days as the primary station crew and spent 125 days aboard the station overall. When Endeavour lands on Monday, they will have spent a total of 129 days in space.

The crew members aboard Endeavour had several hours off duty after departing the station, a break from a very busy pace moving tons of supplies between the shuttle and station during the past week. Sunday's activities will focus on checking out systems used during descent and making preparations for a landing on Monday. Endeavour is set to land at the Kennedy Space Center, FL, about 11:55 a.m. CST Monday. The weather forecast predicts generally acceptable conditions except for a chance of rain showers in the vicinity of the landing site. Flight controllers determined today that all three Inertial Measurement Units on Endeavour, the primary navigation systems for the shuttle, would be usable for landing. One of the three units had been taken off line two days ago due to a brief fault. However, the unit has worked well since that time. Even if the problem were to recur, it would not affect Endeavour's entry and landing since the shuttle can operate with only one such unit if necessary. Endeavour's crew will begin a sleep period at 7:19 p.m. CST and awaken at 3:19 a.m. CST Sunday.

Endeavour is bringing home the Expedition Three crew - Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin - who have been in space since they launched to the station on August 10. In addition to bringing home the Expedition Three crew, Endeavour carried to orbit both a new crew and almost three tons of supplies and experiments to the station. That new crew, Expedition Four Commander Yury Onufrienko and Flight Engineers Dan Bursch and Carl Walz, will remain aboard the space station until May.

The Endeavour astronauts were awakened for their 11th day in space at 4:17 a.m. by the song "Where I Come From," by Alan Jackson, for Pilot Mark Kelly from his family.

Overnight, flight controllers decided to execute an additional reboost of the space station, designed to add about three-quarters of a mile to the station's altitude. On Friday, flight controllers received word from U.S. Space Command that a spent Russian rocket upper stage, launched in the 1970s, could pass within three miles of the station. With today's scheduled reboost, beginning at 8:55 a.m. and using Endeavour's small firing jets for about 20 minutes, the space debris is now expected to pass more than 40 miles away from the station.

With Kelly at the controls, Endeavour is scheduled to undock from the station about 10:37 a.m., concluding more than a week of docked operations. Because today's scheduled reboost will use additional propellant, Endeavour will not perform a full-circle flyaround of the station after undocking. Instead, the shuttle will undock from the station, performing a quarter circle flyaround of the complex to a point about 400 feet directly above the station where it will fire its engines in a final separation burn at 11:20 a.m. beginning its departure from the orbiting outpost.

On the station, all systems are functioning well, including a newly refurbished air conditioning unit in the Russian Zvezda Service Module which received a new compressor yesterday. The air conditioner was tested last night and is functioning normally.

The STS-108 and Expedition Three crewmembers will take time this afternoon to discuss the progress of their mission with KGO-TV in San Francisco, the Fox News

Network and Associated Press in an interview scheduled to begin at 3:09 p.m. today on NASA TV. The crew also will enjoy several hours of scheduled off duty time today prior to gearing up for Monday's scheduled landing.

Homecoming at the Kennedy Space Center is scheduled at 11:55 a.m. Central time Monday. The early weather forecast calls for possible scattered and broken clouds and thunderstorms within 30 nautical miles of the landing strip.

Endeavour is scheduled to return to the Kennedy Space Center about 11:55 a.m. CST tomorrow, weather permitting. Preliminary weather forecasts predict generally acceptable conditions at the landing site, with a chance of rain showers in the vicinity. Entry Flight Director LeRoy Cain and his team of flight controllers will oversee the crew's checkout of flight control systems and surfaces this morning from Mission Control. They also will receive updated weather forecasts for Monday's planned landing.

On what should be their final full day in space, Endeavour's crew - Commander Dom Gorie, Pilot Mark Kelly, Mission Specialists Linda Godwin and Dan Tani, along with the returning Expedition Three crewmembers Frank Culbertson, Vladimir Dezhurov and Mikhail Tyurin - were awakened at 3:14 a.m. by the song "I'll Be Home For Christmas," sung by Bing Crosby.

About 9 a.m. today, Endeavour's crew will deploy a small satellite called STARSHINE 2 from a canister located in the payload bay. More than 30,000 students from 660 schools in 26 countries will track STARSHINE 2 as it orbits the Earth for eight months. The students, who helped polish STARSHINE'S 845 mirrors, will use the information they collect to calculate the density of the Earth's upper atmosphere.

Endeavour's middeck will carry home the results of several experiments completed during Expedition Three's stay on the station. These include the Advanced Protein Crystallization Facility, the Dynamically Controlled Protein Crystal Growth experiment and cells from the Cellular Biotechnology Operations Support System (CBOSS). The CBOSS equipment aboard the space station will remain active during Expedition Four, growing ovarian and colon cancer cells, as well as kidney cells in microgravity.

Experiments in Endeavour's payload bay also will be coming home, to be returned to investigators around the world. The Multiple Application Customized Hitchhiker-1 (MACH-1) is carrying a wide array of experiments, including the Prototype Synchrotron Radiation Detector, the Collisions Into Dust Experiment-2, the Capillary Pump Loop, and the Space Experiment Module (SEM). The SEM is carrying experiments from Argentina, Portugal, Morocco and Australia, as well experiments from U.S. schoolchildren. Several other canisters in Endeavour's payload bay are also carrying student experiments.

The first KSC landing opportunity today would begin with a deorbit burn of Endeavour's large orbital maneuvering engines at 10:50 a.m. resulting in an 11:55 a.m. central time (12:55 p.m. eastern) landing. If weather precludes landing on that first opportunity, there is a second opportunity, one orbit later, with an engine firing at 12:28 p.m. resulting in a 1:32 p.m. central (2:32 p.m. eastern) touchdown. The alternate landing site at Edwards Air Force Base in California has not been called up for launch support today.

Just before 7 a.m., the crew will begin its formal deorbit preparations and by 8:10 a.m., Endeavour's payload bay doors should be closed in preparation for reentry. The crewmembers will begin climbing into their seats at 9:50 a.m., with a final "go, no go" call from the Entry Flight Director expected about 10:30 a.m. A landing today in Florida would conclude a voyage of more than 4.8 million miles for Endeavour and a 129-day stay in orbit for Culbertson, Dezhurov and Tyurin.

Concluding a successful mission to the International Space Station, today's landing brings to an end a voyage of more than 4.8 million miles for Endeavour and marks the 57th shuttle landing at the Florida spaceport.

On Endeavour's flight deck are Commander Dom Gorie, Pilot Mark Kelly and Mission Specialists Linda Godwin and Dan Tani. On the middeck, strapped into recumbent chairs to reduce the effects of reentry, is the Expedition Three crew, Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin.

Following routine medical examinations, the STS-108 and Expedition Three crewmembers will enjoy a reunion with their families. All seven crewmembers are expected to return to a public welcome home at Hangar 990 at Houston's Ellington Field about 1 p.m. Wednesday.

During their 12 days in orbit, the STS-108 crew worked with both the returning Expedition Three and newly-arrived Expedition Four crews to transfer more than three tons of material, hardware and supplies from Endeavour to the station. Godwin and Tani also conducted a spacewalk to install thermal protection on motor assemblies that control the motion of the station's large solar arrays.

On board the International Space Station, the Expedition Four crew - Commander Yury Onufrienko and Flight Engineers Dan Bursch and Carl Walz - are settling in for a planned five-month stay on orbit, unloading the recently arrived Progress resupply vehicle.

Last Saturday, the three new station crewmembers bid farewell to their predecessors, the Expedition Three crew, and the crew of Endeavour as the shuttle undocked to begin its journey home. The Expedition Three crew of Commander Frank Culbertson, Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin returned to Earth on Monday and to Houston on Wednesday. The three have begun several weeks of physical rehabilitation to help their bodies readjust to the pull of Earth's gravity

Aboard the station, Onufrienko, Bursch and Walz spent the week activating science experiments, including a cell growth experiment used to study colon and ovarian cancer cells and human kidney cells. They also continued to familiarize themselves with their new home, unload the Progress 6 cargo ship, and unpack equipment and supplies brought aboard Endeavour.

The crew will continue experiment work next week, and they will have a day off on Christmas Day to observe the holiday. The station's food stores include turkey and some other traditional holiday foods. The crew also will observe a holiday on New Year's Day.

All International Space Station systems are currently operating well. However, on Tuesday flight controllers noted that the Beta Gimbal Assembly that rotates the port-side U.S. solar array experienced strain on its electric motor and briefly stalled. The mechanism was restarted quickly and has since been performing normally. The stall had no significant impact on station operations and is similar to events seen several times in the past. The Beta Gimbal Assemblies rotate the station's arrays, allowing them to precisely track the sun, generating the maximum possible power for the station.

During Endeavour's flight, thermal blankets were installed on both assemblies to better insulate them in hopes of alleviating such problems. Engineers have confidence the mechanisms will continue to operate, and they are continuing to gather data from both the port and starboard mechanisms to evaluate the effectiveness of the new insulation.