Hadfield Credit - www.spacefacts.de

Personal: Male, Married, Three children. Born in Sarnia, Ontario, Canada.

Astronaut Career

Astronaut Group: Canada Group 2 - 1992, NASA Group 14 - 1992. Inactive Entered space service: 9 June 1992. Left space service: January 2005. Number of Flights: 2.00. Total Time: 20.08 days. Number of EVAs: 2.00. Total EVA Time: 0.62 days.

Col. Chris A. Hadfield

Personal Profile: Born August 29, 1959, in Sarnia, and raised in Milton, Ontario. Colonel Chris Hadfield is married to Helene Hadfield (née Walter). They have three children. He enjoys skiing, playing guitar, singing, riding, writing, running, and playing volleyball and squash. His parents, Roger and Eleanor Hadfield, reside near Milton. Her mother, Gwendoline Walter, resides in Victoria, B.C. Her father, Erhard Walter, is deceased.

Education: Graduated as an Ontario Scholar from Milton District High School in 1977; Received a bachelor degree in mechanical engineering (with honours), Royal Military College, Kingston, Ontario, Canada, in 1982; Conducted post-graduate research at the University of Waterloo, Ontario in 1982; Received a Master of Science in aviation systems at the University of Tennessee in 1992.

Affiliations: Royal Military College Club; Society of Experimental Test Pilots; Canadian Aeronautics and Space Institute, Honourary Patron of Lambton College; Trustee of Lakefield College School; Board member of the International Space School Foundation; Executive with the Association of Space Explorers.

Special Honours: Recipient of the 1988 Liethen-Tittle Award (top pilot graduate of the USAF Test Pilot School). U.S. Navy Test Pilot of the Year (1991). Honorary Doctorate of Engineering from the Royal Military College (1996). Member of the Order of Ontario (1996). Honorary Doctorate of Laws from Trent University (1999). Vanier Award (2001). Meritorious Service Cross (2001). NASA Exceptional Service Medal (2002). Queen's Golden Jubilee Medal (2003). Inducted into Canada's Aviation Hall of Fame (2005). Commemorated on Royal Canadian Mint silver and gold coins for his spacewalk to install Canadarm2 on the International Space Station (2006).

Experience: Raised on a corn farm in southern Ontario, Chris Hadfield became interested in flying from a young age. As an Air Cadet, he won a glider pilot scholarship at age 15 and a powered pilot scholarship at age 16. He also taught skiing and ski racing part- and full-time for 10 years.

Hadfield joined the Canadian Armed Forces in May 1978. He spent two years at Royal Roads Military College, in Victoria, British Columbia, followed by two years at the Royal Military College in Kingston, Ontario, where he received a bachelor's degree in Mechanical Engineering (with honours) in 1982. Hadfield underwent basic flight training in Portage La Prairie, Manitoba, for which he was named top pilot in 1980. In 1983, he took honours as the overall top graduate from Basic Jet Training in Moose Jaw, Saskatchewan, and in 1984-1985, he trained as a fighter pilot in Cold Lake, Alberta on CF-5s and CF-18s.

For the next three years Hadfield flew CF-18s for the North American Aerospace Defence Command (NORAD) with 425 Squadron, during which time he flew the first CF-18 intercept of a Soviet "Bear" aircraft. He attended the United States Air Force (USAF) Test Pilot School at Edwards Air Force Base, in California, and upon graduation, served as an exchange officer with the U. S. Navy at Strike Test Directorate at the Patuxent River Naval Air Station. His accomplishments from 1989 to 1992 included testing the F/A-18 and A-7 aircraft; performing research work with NASA on pitch control margin simulation and flight; completing the first military flight of F/A-18 enhanced performance engines; piloting the first flight test of the National Aerospace Plane external burning hydrogen propulsion engine; developing a new handling qualities rating scale for high angle-of-attack test; and participating in the F/A-18 out-of-control recovery test program. In total, Hadfield has flown over 70 different types of aircraft.

In June 1992 Chris Hadfield was selected to become one of four new Canadian astronauts from a field of 5330 applicants. He was assigned by the Canadian Space Agency (CSA) to the NASA Johnson Space Center in Houston, Texas in August of the same year, where he addressed technical and safety issues for Shuttle Operations Development, contributed to the development of the glass shuttle cockpit, and supported shuttle launches at the Kennedy Space Center, in Florida. In addition, Hadfield was NASA's Chief CapCom, the voice of mission control to astronauts in orbit, for 25 space shuttle missions. From 1996 to 2000, he represented CSA astronauts and coordinated their activities as the Chief Astronaut for the CSA.

From 2001-2003, Hadfield was the Director of Operations for NASA at the Yuri Gagarin Cosmonaut Training Centre (GCTC) in Star City, Russia. His work included coordination and direction of all International Space Station crew activities in Russia, oversight of training and crew support staff, as well as policy negotiation with the Russian Space Program and other International Partners. He also trained and became fully qualified to be a flight engineer cosmonaut in the Soyuz TMA spacecraft, and to perform spacewalks in the Russian Orlan spacesuit.

Hadfield is a civilian CSA astronaut, having retired as a Colonel from the Canadian Air Force in 2003 after 25 years of military service. He was Chief of Robotics for the NASA Astronaut Office at the Johnson Space Center in Houston, Texas from 2003-2006, and is now Chief of International Space Station Operations.

Space flights: In November 1995 Hadfield served as Mission Specialist 1 on STS-74, NASA's second space shuttle mission to rendezvous and dock with the Russian Space Station Mir. During the flight, the crew of Space Shuttle Atlantis attached a five-tonne docking module to Mir and transferred over 1,000 kg of food, water, and scientific supplies to the cosmonauts. Hadfield flew as the first Canadian mission specialist, the first Canadian to operate the Canadarm in orbit, and the only Canadian to ever board Mir.

In April 2001 Hadfield served as Mission Specialist 1 on STS-100 International Space Station (ISS) assembly Flight 6A. The crew of Space Shuttle Endeavour delivered and installed Canadarm2, the new Canadian-built robotic arm, as well as the Italian-made resupply module Raffaello. During the 11-day flight, Hadfield performed two spacewalks, which made him the first Canadian to ever leave a spacecraft and float freely in space. In total, Hadfield spent 14 hours, 54 minutes outside, travelling 10 times around the world.

August 2006

• 12 November 1995 Flight: STS-74. Flight Up: STS-74. Flight Back: STS-74. Flight Time: 8.19 days.

• 19 April 2001 Flight: STS-100. Flight Up: STS-100. Flight Back: STS-100. Flight Time: 11.90 days.

12 November 1995 - STS-74. Rendezvoused and docked with Mir space station on November 15. Delivered the Russian-built 316GK Shuttle-Mir docking module to Mir.Payloads: Shuttle-Mir Mission 2; docking module with two attached solar arrays; IMAX Cargo Bay Camera (ICBC); Glow Experiment (GLO-4)/ Photogrammetric Appendage Structural Dynamics Experiment (PASDE) Payload (GPP); Shuttle Amateur Radio Experiment (SAREX) II.

As of noon today, 81 percent, or more than 39 million square miles of the target area had been mapped once. That exceeds the land area of the Americas, Africa and Australia combined. More than 47 percent of the target area - over 22 million square miles - has been mapped with two or more passes. Endeavour images 40,000 square miles of land every minute.

Astronaut Chris Hadfield in Mission Control transmitted the good news to the crew aboard Endeavour while all six astronauts were awake conducting a shift change. The crew is working around the clock on two shifts conducting the detailed mapping operations. Several fuel-saving steps have been implemented, including a change in the way excess water is dumped overboard, and allowing more flexibility in holding Endeavour and the 200-foot mast in the proper attitude. The final conservation measure will be the deletion of the eighth trim burn, which controllers believe can safely be deleted by adjusting the sixth and seventh burns without a disruption to data collection.

Exuberant scientists today released new radar images of the San Andreas Fault in California, the Los Angeles basin, Southern California's San Gabriel Mountains, and the island of Hokkaido, Japan, birthplace of Mission Specialist Mamoru Mohri. "We're well on the way to making the best topographic map of the world ever," said Dr. Diane Evans, chief scientist in the Jet Propulsion Laboratory's Earth Science Office. "We are ecstatic about this data set." She said the level of detail in maps resulting from this Shuttle Radar Topography Mission should help scientists better understand earthquakes and mudflows.

Science operations continued through the seventh day of the mission, with trouble-shooting a problem with one of six high data-rate recorders on board being the only issue of significance. The recorders are used to capture the masses of data collected during the SRTM mission on 270 tapes.

Earlier today, Mohri spoke about the mission with Japanese Prime Minister Keizo Obuchi and the Minister of State for Science and Technology. Later, he joined Dom Gorie and Janice Voss for interviews with The Weather Channel and two television stations. Janet Kavandi briefly joined them to send greetings to her hometown of Springfield, MO.

Meanwhile, EarthKam continues its record-breaking production of images, having processed 1,355 images. The project allows school students to remotely take pictures of the Earth using a camera mounted in one of Endeavour's windows.

The orbiter continues to perform smoothly and provide a solid platform for the most accurate and unified topographical mapping of the Earth ever produced.

As of noon today, 88 percent, or more than 42 million square miles of the target area had been mapped once. More than 57 percent of the target area - over 27 million square miles - has been mapped with two or more passes. Endeavour images 40,000 square miles of land every minute. At that rate, it can image an area the size of Rhode Island in just 2 seconds.

Scientists today released radar images of the San Andreas Fault and the Rose Bowl area in southern California, the Kamchatka Peninsula in Russia's Far East, and the Hawaiian Island of Oahu. Scientists predict that the level of detail in maps resulting from data collected during the Shuttle Radar Topography Mission will help scientists better understand hazards such as wildfires, lava flows, tsunamis and floods.

Science operations continued smoothly through the mission's eighth day, with all radar and support hardware continuing to work better than hoped. "Everything is perfect. It's incredible," observed Marian Werner, X-SAR project manager for the German Aerospace Agency, which provided the X-band radar system used by SRTM.

Earlier today, Endeavour's six astronauts gathered together for their traditional news conference, answering questions from U.S. and Japanese reporters. NASA Administrator Daniel Goldin and German Research Minister Edelgard Buhlmann also congratulated the crew on the success of the mission and the potential benefits of the resulting high-resolution maps.

EarthKam continues its outstanding performance. It has nearly equaled the number of images produced during its first four flights combined, with more than 1,700 images produced thus far.

Endeavour continues to perform smoothly and provide a solid platform for the most accurate and unified topographical mapping of the Earth ever produced.

Minor issues being worked by the crew and flight control teams in Houston and Moscow are not impacting the operation and health of the complex, but are occupying time of engineers in preparing troubleshooting procedures for items on board.

The activation of the station's Ku-Band antenna is on standby until procedures are put in place for a possible software patch to account for an apparent pointing error with the dish-shaped antenna. The Ku Band system is used to transmit television, voice and high-speed data to the ground. Normal communication is being managed through the S-Band audio system. Any required TV images, in the meantime, can be accommodated through the use of the laptop computer-based digital video system. Until that problem is corrected, transmission of experiment data from the Human Research Facility experiment rack in the Destiny laboratory is on hold.

A Destiny condensate venting system is not working and while troubleshooting continues, the thermal loop temperatures have been increased so that no water currently is being condensed. As a point of verification, a contingency water container has proven to be useful in serving as a storage location for condensate, if required.

In and around maintenance tasks and routine housekeeping chores, the crew has been busy setting up additional equipment and conducting status checks on some of the payloads. A new bicycle exercise machine called CEVIS (for Cycle Ergometer with Vibration Isolation System) was setup this week, while engineers assess the work needed to repair the station's treadmill, which is showing wear in many of the slats that provide support to the unit designed to allow exercise with little or no vibration that could impact sensitive experiment work.

The Progress supply craft docked to the Zvezda module delivered 89 kilograms of oxidizer to the service module's storage tanks via remote commanding from the ground. The Progress will be undocked from the station in mid-April in preparation for the arrival of the next shuttle flight carrying the station's Canadian-built robot arm and another Italian Space Agency supplied logistics module called Raffaello.

The Progress undocking provides an open port for the relocation of the Soyuz capsule around April 16-18 which will provide clearance for the placement of Raffaello during the shuttle mission, which launches April 19.

Later this week the Expedition Two crew is scheduled to perform some maintenance work in an attempt to get the carbon-dioxide removal assembly in Destiny working. The plan calls for a test of a cable to ensure it is working before changing the pump with a spare brought up on the most recent shuttle flight. As of now, with only three people onboard, carbon dioxide removal from the cabin air is adequately conducted by Zvezda's Vozdukh system.

The crew plans to take part in its first interview opportunity on Friday with reporters from CBS and the Associated Press at 10 a.m. CST Friday. The interview will be broadcast on NASA TV, but will be audio only.

Meanwhile down at the Kennedy Space Center in Florida, the crew of shuttle mission STS-100 is conducting its traditional countdown dress rehearsal in preparation for launch to the ISS April 19. The international crew consists of Commander Kent Rominger, Pilot Jeff Ashby, Flight Engineer John Phillips, Mission Specialist Scott Parazynski, Canadian astronaut Chris Hadfield, European astronaut Umberto Guidoni and Russian Aviation and Space Agency cosmonaut Yuri Lonchakov.

The International Space Station continues to orbit the Earth in good shape at an altitude of 238 statute miles (384 km).

• Bay 1-2: Orbiter Docking System, External Airlock, 3 EMU spacesuits - 2160 kg including 360 kg for the 3 suits
• Bay 3 Starboard: Adapter Beam with DCSU switching unit - 180kg
• Bay 5: Spacelab Pallet with Canadarm-2 SSRMS (Space Station Remote Manipulator System, 1800 kg mass), LDA, and 56 kg UHF antenna - 3256 kg
• Bay 6 Port: Adapter Beam with IMAX Camera - 238 kg
• Bay 8-12: Rafaello Module (MPLM-2) with MPLM racks and 3400 kg cargo - 7500 kg
• Sill: Canadarm RMS 303 - 410 kg

On 23 April the SSRMS station manipulator was unberthed from the SLP Spacelab pallet at 1114 GMT and latched on to the PDGF fixture on the Destiny ISS module at 1416 GMT. This was followed at 1458 GMT with the MPLM-2 Raffaello module being moved from Endeavour's payload bay by the Shuttle's RMS and berthed to the nadir port on the ISS Unity module at 1600 GMT. Over the next few days, the cargo racks on the MPLM were transferred to Destiny. Raffaello was then unberthed from Unity at 2003 GMT on April 27 and reberthed in the rear of Endeavour's bay for return to earth at 2059 GMT.

Undocking of Endeavour was delayed by a series of computer problems at the Station. Failures in the Station's command and control computers left only one of the three computers operating.

They were all restarted by April 29, and the Shuttle RMS grappled the Spacelab pallet at 2044 GMT . The station's Canadarm-2 released it at 2106 GMT, and the RMS berthed the pallet back in the Shuttle cargo bay. Endeavour undocked from the Station at 1734 GMT on April 29. The weather in Florida was bad at the planned May 1 landing time, so Endeavour landed in California. The deorbit burn was at 1502 GMT on May 1, with landing at 1610:42 GMT on runway 22 at Edwards. Endeavour returned to the Kennedy Space Center atop a Boeing 747 SCA aircraft on May 9.

Commander Kent Rominger, Pilot Jeff Ashby and Mission Specialists Chris Hadfield of the Canadian Space Agency, John Phillips, Scott Parazynski, Umberto Guidoni of the European Space Agency and Yuri Lonchakov of Rosaviakosmos blasted off on time from Launch Pad 39-A at 1:41 p.m. Central time as the ISS sailed over the Indian Ocean south of India. Aboard the station, Expedition Two Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms were told of Endeavour's launch as it lifted off from the pad. Approximately 20 minutes later, the three crew members took a few minutes out from routine maintenance work and preparations for Endeavour's arrival to watch a video feed of the launch uplinked to them by ISS flight controllers in Houston through the station's KU-band communications system.

Less than nine minutes after launch, Endeavour had reached its preliminary orbit and began its pursuit of the station for a docking Saturday morning. The seven astronauts began to configure systems for on-orbit operations and opened the shuttle's cargo bay doors before the start of an eight-hour sleep period tonight at 6:41 p.m. Central time.

Aboard the ISS, all systems continue to function normally as Usachev, Voss and Helms ready the complex for their first visitors since beginning their expedition one month ago. On Monday, a Russian Progress resupply vehicle was jettisoned from the aft docking port of the Zvezda module, enabling the station crew to undock its Soyuz return capsule from the nadir port of the Zarya module yesterday and fly it to a redocking with Zvezda in a 21-minute maneuver. That cleared the Zarya docking port for the arrival of the Soyuz rotation "taxi" crew at the ISS later this month. The taxi crew will deliver a fresh Soyuz capsule for the Expedition crew members' use as an emergency return vehicle. The Soyuz vehicles need to be rotated approximately every six months.

Hadfield and Parazynski are scheduled to venture outside Endeavour Sunday for the first of two scheduled space walks to unfold the huge booms of the 57-foot-long Canadarm2 and to route power to the device, which will be mounted on the Destiny Laboratory for future station assembly work. Canadarm2 is scheduled to "walk off" its pallet and attach itself to a grapple fixture on Destiny Monday, where it will receive power, data and commanding from the Expedition crew operating at robotic workstations inside Destiny.

Housed in Endeavour's cargo bay is the Italian Space Agency-provided Raffaello cargo module, which is carrying several tons of equipment for the Expedition Two crew and racks of hardware for installation in Destiny which will be used for scientific research in the future. Raffaello, which is the second of three such logistics modules, will be berthed to the ISS Monday so its contents can be transferred to the station throughout the course of docked operations.

Endeavour is circling the Earth in excellent shape as it flies in an orbit inclined 51.6 degrees to either side of the Equator.

Endeavour is scheduled to dock with the station at 8:36 Saturday morning to deliver the Canadian built high tech robotic arm, called Canadarm2 and the Raffaello Multipurpose Logistics Module supplied to the program by the Italian Space Agency. Raffaello contains equipment and supplies for the station and its crew of Commander Yury Usachev, and Flight Engineers Jim Voss and Susan Helms. It also brings two new experiment racks for the station's U.S. laboratory Destiny.

The Endeavour crew, Commander Kent Rominger, Pilot Jeff Ashby and Mission Specialists Chris Hadfield of the Canadian Space Agency, John Phillips, Scott Parazynski, Umberto Guidoni of the European Space Agency and Yuri Lonchakov of Rosaviakosmos were awakened at 2:41 a.m. Friday by "Then the Morning Comes" by the musical group Smashmouth. It was chosen for Phillips, making his first spaceflight.

Today the shuttle crew will checkout three spacesuits and the orbiter's robotic arm while rendezvous preparations include installation of the centerline camera and extension of Endeavour's Orbital Docking System ring. Another rendezvous engine burn is scheduled shortly before the crew finishes today's activities.

Space station crewmembers also will get ready for the rendezvous. Later today they will prepare equipment for transfer to the shuttle shortly after docking.

Endeavour will bring the first visitors to the Expedition Two crew since Discovery's departure last month. Shortly after Endeavour's scheduled undocking and departure from the station on April 28, a taxi crew is to arrive with a new Soyuz spacecraft. It will replace the Soyuz, which launched the first crew toward the station on Oct. 31, 2000. The Soyuz capsule has an on-orbit life of about six months.

Hadfield and Parazynski will conduct two spacewalks on Sunday and Tuesday. The first will focus on installation of the 2-ton, 57-foot-long Canadarm2. The second is devoted to checkout of the arm that will be instrumental in future space station assembly.

Major systems aboard Endeavour and the International Space Station continue to function well.

Endeavour is scheduled to dock with the station at 8:32 a.m. Saturday although the crews will not greet each other until early Monday. In preparation for tomorrow's rendezvous and docking, Hadfield and Parazynski checked out the tools and hardware that will be used during Endeavour's approach to the station, and Commander Kent Rominger and Pilot Jeff Ashby installed a center-line camera in the orbiter docking system.

Rominger, Ashby and Flight Engineer John Phillips performed another in a series of engine firings to refine Endeavour's approach to the Station. As of 5 p.m., Endeavour was approximately 1,400 miles behind and below the station, and closing that distance at the rate of about 171 miles every orbit of the Earth. Hadfield and Parazynski also verified the operation of the spacesuits they will wear on two scheduled space walks to install and activate the new Canadarm2 robotic arm.

European Space Agency astronaut Umberto Guidoni began preparations for the transfer of hardware and material from Endeavour to the station and worked with Ashby in checking out the shuttle's robotic arm to verify its operation. Yuri Lonchakov of Rosaviakosmos worked on the middeck and filled two large water containers for later transfer to the station.

Endeavour's astronauts will go to sleep at 5:41 p.m. today, awakening at 1:41 a.m. Saturday. They will quickly begin the final stages of their chase of the International Space Station. The final intercept burn is scheduled for 6:13 a.m., with docking at 8:32 a.m., as the two spacecraft fly overhead the Southeast coast of China, northeast of Victoria, Hong Kong.

Meanwhile, on the space station, Expedition 2 Commander Yury Usachev and Flight Engineers Susan Helms and Jim Voss continued packing return items and making sure their orbiting home is ready for the crew's first visitors. Flight controllers report that the Russian segment's carbon dioxide removal system is not working at its highest rate, probably due to a clogged filter screen. The situation poses no problems for the upcoming shuttle visit, but could lead to increased use of backup lithium hydroxide removal systems after the shuttle undocks and additional crew members arrive on a Soyuz taxi flight. The station crew may be asked do some repairs on the unit on Saturday.

Otherwise, all major systems aboard Endeavour and the International Space Station continue to function well.

Rominger, Pilot Jeff Ashby and Mission Specialists John Phillips, Chris Hadfield, Umberto Guidoni, Scott Parazynski and Yuri Lonchakov, briefly opened a hatch leading from the Shuttle into Pressurized Mating Adapter-2, and retrieved a battery-powered drill for use on Sunday's space walk. They also left behind some supplies that were later retrieved by the station crew. From the station side of the hatch leading to PMA-2, flight engineer Jim Voss used a video camera to film the smiling Shuttle crew members as they transferred four water containers, computer equipment, some fresh food and film for the IMAX camera.

Though securely linked together, the two crews are not scheduled to greet one another in person until early Monday, following the first space walk to be conducted Sunday by Hadfield and Parazynski. Late in their day, Hadfield and Parazynski were joined by space walk coordinator Phillips in conducting some final checks of the suits and hardware that will be used during tomorrow's planned 6 ½ hour space walk. The full crews on both vehicles then reviewed the procedures to be followed throughout Hadfield and Parazynski's space walk.

This first space walk, scheduled to begin about 6:20 a.m., will focus on installing the station's robotic arm, called Canadarm2, and attaching an ultrahigh frequency (UHF) antenna on the station's exterior. A second space walk is scheduled for Tuesday, and will focus on establishing power connections and checking out the new 57.7 foot-long robotic arm.

Expedition Two Commander Yury Usachev and Flight Engineer Susan Helms verified the performance of the station's carbon dioxide removal system, called Vozdukh, which had been operating in a slightly degraded condition. The system started working normally overnight on its own, and their checkout confirmed that it is operating within normal parameters. Usachev, Helms and Voss also exercised and continued preparations for the next week of joint operations with the Shuttle crew.

All systems are in good shape aboard both vehicles. The Station crew will go to sleep at 5:31 p.m. today, followed 10 minutes later by the crew of Endeavour. Mission Control will awaken the shuttle crew at 1:41 a.m. Sunday and the station crew will hear its wake-up alarm tone at 2:01 a.m.

Before the undocking a week later, two space walks will have been conducted and Raffaello, the second Multipurpose Logistics Module provided by the Italian Space Agency, will have been unloaded and reloaded after berthing to the station. The pressurized cargo carrier - an orbital moving van - is bringing food, equipment and other supplies, as well as two scientific experiment racks for the U.S. laboratory Destiny.

Endeavour will approach the station from behind and below. Commander Kent Rominger and Pilot Jeff Ashby, assisted by the rest of the crew, will fly the shuttle to a point about 600 feet directly below the station. With the cargo bay pointed toward the station, they will fly a quarter circle to a point about 300 feet ahead of the station. From there they will begin a slow approach to the docking port at the forward end of Destiny. Stationkeeping will begin at a distance of about 30 feet to ensure a good alignment with the station's docking target before Rominger resumes the approach at a speed of about one foot every 10 seconds until docking.

Kenny Loggins' "Danger Zone" awakened Endeavour's crew - Rominger, Ashby and Mission Specialists Chris Hadfield, John Phillips, Scott Parazynski, Umberto Guidoni and Yuri Lonchakov - early this morning. The song from the Top Gun soundtrack was played for Rominger.

The space station's crew was awakened shortly after 2 a.m. to make final preparations for the shuttle's arrival. The Expedition Two crew of Russian Commander Yury Usachev and astronauts Jim Voss and Susan Helms has been aboard the station for more than a month since assuming duty from the Expedition One crew on March 18.

Though joined together, the two crews will not meet face-to-face until early Monday, after the first space walk by Hadfield and Parazynski. Endeavour's cabin pressure was lowered to 10.2 pounds per square inch Friday afternoon in preparation for that space walk, while the atmosphere inside the station remains a normal 14.7 psi.

The first space walk, scheduled to begin about 6:20 a.m. Sunday, will focus on installation of the station's robotic arm, called Canadarm2. The space walkers also will install a UHF antenna on the station's exterior. Their second space walk Tuesday, features routing power and checking out the stations arm, which at 57.7 feet long, is longer, more flexible and more powerful than the robotic arm used by the shuttle fleet. If necessary, a third space walk could take place Thursday.

All systems are in good shape aboard both vehicles.

Shortly after crew wakeup, Canadian Space Agency astronaut Chris Hadfield and Scott Parazynski began suiting up for the six and a half hour space walk that marks the 19th devoted to the assembly of the ISS and the 63rd in the history of the shuttle program. Hadfield will be wearing a spacesuit with red stripes around the legs, while Parazynski's suit will have no markings. John Phillips will serve as the in-cabin quarterback for the space walk as Pilot Jeff Ashby and European Space Agency astronaut Umberto Guidoni operate the shuttle's robotic arm to install the new arm on the outside of the Destiny laboratory.

Hadfield and Parazynski will connect cables to give the arm power and allow it to accept computer commands from the lab. They will unbolt the arm from the pallet, then unfold its two booms and tighten bolts to make them rigid. The space walkers also will install a UHF antenna on Destiny.

The Space station's Expedition Two crewmembers Jim Voss and Susan Helms will power up the arm from the Robotic Work Station inside Destiny, checking connections made by the space walkers.

A second space walk is scheduled for Tuesday, and will focus on establishing permanent power connections between the 57.7 foot-long arm and station and running it through a thorough checkout.

The shuttle crew was awakened earlier this morning by Canadian Stan Roger's "Take It From Day to Day" played for Hadfield in honor of the space walk - the first ever by a Canadian. The Expedition Two crew was awakened shortly after the shuttle crew.

Endeavour's cabin pressure will be increased to match that of the station during the space walk leading toward opening of the hatches between the shuttle and station Monday morning. Endeavour docked with the station at 8:59 a.m. Saturday followed soon after by entrance into the docking port on the station to retrieve some tools for use during today's space walk. The shuttle crew left behind four water containers, fresh food, computer equipment and IMAX camera film for the station crew.

Mission Control Houston recognized the importance of today's activities sending up a congratulatory message from Canadian Astronaut Steve MacLean and playing the Canadian anthem, "Oh Canada" before the two space walkers - Scott Parazynski and Chris Hadfield - floated back into Endeavour. Hadfield became the first Canadian to conduct a spacewalk today as he worked to install the Canadian built and provided Canadarm2 robotic arm.

"It really just opens the door to what all of us can be doing here internationally, beginning to explore space as a planet," said Hadfield.

Parazynski and Hadfield spent 7 hours and 10 minutes working outside the station, installing first an Ultrahigh Frequency (UHF) antenna before turning their attention to the station's new robotic arm. They floated out of Endeavour's airlock at 6:45 a.m. central time and about two hours later had installed and deployed the UHF antenna on the Destiny module of the station.

With that complete, the two astronauts turned their attention to installing the new station robotic arm. The main boom was deployed at 10 a.m. central, and a few minutes later, at 10:10 a.m. Hadfield and Parazynski began unfolding the arm as Endeavour and the station flew 238 miles over the Atlantic Ocean.

With the new arm secured in its pallet attached to the exterior of the Destiny laboratory, Hadfield and Parazynski connected cables to give the arm power and allow it to accept computer commands from inside the lab. After unfolding the arm, they used a pistol grip tool to properly secure a series of expandable fasteners that keep the booms rigidized in position. The two space walkers experienced some difficulty ensuring an appropriate torque level had been placed on the fasteners. By taking the pistol grip tool from automatic to manual mode, Hadfield and Parazynski securely tightened the bolts in place, completing their activities for the day and beginning to clean up the payload bay before returning to Endeavour.

Today's spacewalk, which concluded at 1:55 p.m., was the 19th conducted to assemble the International Space Station. A second spacewalk scheduled for Tuesday will focus on establishing permanent power connections between the arm and station and performing a thorough checkout.

At 1:53 p.m., Flight Engineers Susan Helms and Jim Voss, on board the station, commanded the first motion of the new station robotic arm as they flew 242 miles over the Indian Ocean crossing the eastern coast of Africa. All indications are that the arm operated perfectly in this initial commanding.

Tomorrow, just before 5:30 a.m., Helms and Voss will "walk" the arm off the pallet and attach it to a grapple fixture on the Destiny module. On Wednesday morning, they will use the station arm to hand the pallet to the shuttle arm. In a procedure that will take about 3 ½ hours from start-to-finish, the pallet will be transferred from one arm to the other and berthed back in Endeavour's payload bay for return to Earth

Endeavour's 50 foot-long robotic arm will be pressed into service once again Monday morning as Pilot Jeff Ashby grapples the Italian Space Agency-provided "Raffaello" logistics module and docks it to the Unity module. Early Tuesday morning, the Expedition Two crew - Voss, Helms and Commander Yury Usachev - will enter Raffaello and begin transferring the supplies, equipment and experiment racks loaded inside.

After a busy day on orbit for both crews, the station crew will go to sleep at 5:31 p.m., followed 10 minutes later by Endeavour's crew. Mission Control will wake up Commander Kent Rominger, Ashby, Mission Specialists John Phillips, Yuri Lonchakov, Umberto Guidoni, Hadfield and Parazynski at 1:41 a.m. Monday. The station crew is scheduled to wake up at 2:01 a.m.

The new 57-foot long Canadian-built Canadarm2 robot arm took its first step this morning, "walking off" a pallet mounted at the top of the Destiny Laboratory to grab onto an electrical grapple fixture on Destiny capable of providing data, power and telemetry to the dexterous appendage.

With Expedition Two Flight Engineer Susan Helms sending commands from a workstation inside Destiny, the arm began to move off the pallet at 6:13 a.m. Central time. Three hours later, after an extensive checkout of all of its new joints, the arm affixed itself to the Destiny grapple point where it will remain overnight in preparation for its first active grappling of a payload --- the pallet on which it was launched --- on Tuesday.

As Canadarm2 was completing its work for the day, Mission Specialist Scott Parazynski used Endeavour's slightly smaller robot arm to latch onto the Italian-built Raffaello cargo module in the Shuttle's payload bay. Raffaello was lifted out of the bay and was attached to a docking port on the Station's Unity module at 11:00 a.m., setting the stage for Expedition Commander Yury Usachev, and Flight Engineers Jim Voss and Helms to begin unloading three tons of supplies beginning tomorrow. Parazynski was assisted by European Space Agency astronaut Umberto Guidoni, who will take the lead in assisting the Station crewmembers in the unloading of Raffaello and the repacking of discarded items in the module later this week.

Parazynski and Canadian Space Agency astronaut Chris Hadfield prepared for their second spacewalk of the mission tomorrow by checking out their tools and spacesuits. They are scheduled to emerge from Endeavour's airlock around 8 a.m. Tuesday for a planned 6 ½ hour excursion to rewire the base of the newly installed Canadarm2 so it can operate from its new home on the Destiny Laboratory, to remove a communications antenna from Unity which is no longer needed and to mount a spare electrical converter unit on a stowage platform on Destiny for future Station use.

Earlier today, Commander Kent Rominger, Pilot Jeff Ashby and Mission Specialists John Phillips and Yuri Lonchakov of the Russian Aviation and Space Agency led the way as hatches swung open between Endeavour and the ISS at 4:25 a.m., allowing the ten crewmembers to greet one another for the first time. Some supplies carried to the Station aboard Endeavour were transferred throughout the day until the hatches once again were closed at 2:26 p.m. after 10 hours of joint operations. The hatch closure enabled the Shuttle's cabin pressure to be lowered to support tomorrow's spacewalk.

Near the end of the day, Rominger and Ashby supervised a one-hour firing of Endeavour's jets to gently raise the orbit of the ISS about 2 ½ statute miles, from 237.8 statute miles to 240.3 statute miles. Two more reboosts are planned on Wednesday and Thursday to leave the Station at the correct altitude for the arrival of a Russian-commanded "taxi" crew next week delivering a fresh Soyuz return vehicle to the complex.

Both crews are scheduled to end their day just after 6:30 p.m. and will be awakened early Tuesday morning. Both spacecraft are in excellent shape orbiting the Earth every 92 minutes.

Hatch opening was set for 4 a.m. following a wakeup call from Mission Control earlier this morning. Judy Collins' "Both Sides Now" for Pilot Jeff Ashby started the shuttle crews' day.

After transfer of equipment and supplies, the hatches will be closed again a little after 2 p.m. so that the Shuttle cabin pressure can once again be lowered to prepare for Tuesday's second spacewalk. That spacewalk will focus on permanently powering the station arm and doing further checkouts.

The 57.7-foot arm was installed and unfolded Sunday during a 7 hour, 10 minute spacewalk by Scott Parazynski and Chris Hadfield. They also installed a UHF antenna on the station's U.S. laboratory Destiny. It was the 19th spacewalk devoted to ISS assembly and the 63rd in the history of the shuttle program.

After additional checkouts by Helms and Voss this morning, the arm will "walk" off the Spacelab Pallet on which it was launched. Its free end will be attached to a Power and Data Grapple Fixture on Destiny, becoming the arm's base. That first step, beginning a little after 5 a.m., will cover just over 24 feet. Wednesday morning, the station arm will hand the pallet to the shuttle arm, to be berthed in Endeavour's cargo bay for return to Earth.

Endeavour's own 50-foot robotic arm, operated by Ashby, will grapple the Raffaello logistics module in the cargo bay and dock it to the Unity module. Its installation there should be complete about 10 a.m. today. Early Tuesday, the Expedition Two crew will begin transferring the food, supplies, equipment and two experiment racks for installation in Destiny from Raffaello to the station.

Both crews are scheduled to end their day about 6:30 p.m. today. Both spacecraft are in excellent shape orbiting Earth every 92 minutes at an altitude of 240 statute miles.

Expedition 2 Flight Engineers Jim Voss and Susan Helms steered Canadarm2 as it lifted its first payload in space, a 3,000-pound pallet that the 57-foot-long arm had been nestled in for launch in the shuttle's cargo bay.

Today's 7 hour, 40 minute spacewalk began at 7:34 a.m. Central time, as Hadfield and Parazynski worked to complete all of the primary goals of the mission, including the connection of the Power and Data Grapple Fixture circuits for the new arm on Destiny, the removal of an early communications antenna and the transfer of a spare Direct Current Switching Unit from the shuttle's payload bay to an equipment storage rack on the outside of Destiny.

As the pair rewired power and data connections for Canadarm2, the backup power circuit failed to respond to commanding from Helms, who was operating from a workstation inside Destiny. Hadfield and Parazynski opened a panel to gain access to another connector at the base of the arm and after disconnecting and reconnecting cables, were able to complete the redundant power path to the arm to the cheers of flight controllers in Houston.

During the removal of the early communications antenna, an electrical connector cover got away from Hadfield and nestled behind a thermal cover in the docking port to which the airlock will be mated in June. After two unsuccessful attempts to locate the errant piece of metal - which required extensive coordination between the shuttle and station flight control teams on the ground -- Hadfield was instructed to stop searching and to move on to other work. The errant component is not expected to have any impact on future operations. With all of their work successfully completed, Hadfield and Parazynski completed their space walk at 3:15 p.m., bringing the total spacewalk time on STS-100 to 14 hours, 50 minutes. A potential third spacewalk on Thursday likely will not be needed.

Expedition Two Commander Yury Usachev and Station crewmates Voss and Helms started their workday transferring supplies, equipment and experiment racks from the Raffaello cargo module, which is berthed to the Unity connecting node.

After the spacewalk was completed, the two crews turned their attention to reopening the hatches between the station and shuttle. Commander Kent Rominger reported that Endeavour's crew had returned to the ISS at 5:15 p.m. to set the stage for the resumption of transfer activities on Wednesday. The two crews will begin their sleep periods shortly after 6:30 p.m.

Both spacecraft are in excellent shape orbiting the Earth every 92 minutes at an altitude of 237 statute miles.

The Raffaello logistics module, now open for business following yesterday's berthing to the side of the station's Unity module, will be unloaded over the course of the next five days and then reloaded with unneeded cargo from the station for return to Earth.

While the Expedition Two crew of Commander Yury Usachev and Flight Engineers Jim Voss and Susan Helms begin to transfer goods from Raffaello, on the other side of the hatch aboard Endeavour, Scott Parazynski and Chris Hadfield planned to conduct the second Extravehicular Activity beginning about 8 a.m.

The first order of business for the veteran spacewalkers will be to connect power, computer and video cables to the Power and Data Grapple Fixture on the side of the station's Destiny laboratory. An antenna on Unity will be removed, as it is no longer needed. Cables on the pallet that carried the new robot arm to the station will be disconnected. Once those cables are removed, the Canadian-built Canadarm2 will be receiving power and communicating with the station's Robotics Work Station inside Destiny.

Near the end of the planned 6-½ hour spacewalk, Helms will command the station's new robotic arm to pick up the 3,000-pound pallet that delivered it to space. She then will maneuver the pallet through various positions to test the arm with a load. Helms will finish today's tests by maneuvering the pallet over Endeavour's payload bay where it will remain parked overnight, still attached to the high-tech robotic arm.

The day began for the astronauts and cosmonauts with the dulcet tones of Louis Armstrong singing "What A Wonderful World." The song was played for Parazynski in honor of today's spacewalk.

Included in the nearly two tons of equipment being off-loaded from the Italian-built Raffaello are two new experiment racks that soon will be filled with science experiments currently in Endeavour's middeck, and other experiments that will be brought to the station on future shuttle missions. Once the hatches are open late this afternoon after the spacewalk, European Space Agency astronaut Umberto Guidoni will take the lead in assisting the station crewmembers in the unloading of Raffaello and the repacking of discarded items in the module for return to Earth.

Both spacecraft are in excellent shape orbiting the Earth every 92 minutes at an altitude of 237 statute miles.

While robotic arm operations are underway by Expedition Two crewmembers Susan Helms and Jim Voss aboard the station, and shuttle crewmembers Chris Hadfield and Scott Parazynski, the remaining shuttle and station astronauts and cosmonauts continue the task of unpacking the Raffaello high-tech moving van. European Space Agency astronaut Umberto Guidoni is overseeing the unloading of the Italian-built logistics module.

Today's wakeup call to the crew was "Con te Partiro" ("With You I Will Go"), sung by Italian opera singer Andrea Bocelli. It was played for Guidoni who is from Italy.

Working at the Robotics Work Station in the Destiny Laboratory, Helms and Voss will use the new Canadarm2 to maneuver the pallet within reach of Endeavour's robotic arm under control of Hadfield and Parazynski. In a reverse passing of the torch, the new arm will pass the pallet to its older cousin officially beginning the station arm's own career in space.

Hadfield and Parazynksi completed connections on the station's new robotic arm during the second of two planned spacewalks yesterday. The 7 hour, 40 minute Extravehicular Activity included the connection of power, data and television cables, which allow the robot arm to operate from a base on the outside of the Destiny science laboratory.

At about 2:30 today, Endeavour's Commander Kent Rominger and Pilot Jeff Ashby will boost the station's altitude another 2 ½ miles by firing thruster jets in a precise sequence for about one hour. With one reboost maneuver completed several days ago, a third and final identical firing of the reaction control system jets is planned Thursday.

Both spacecraft are in excellent shape orbiting the Earth every 92 minutes at an altitude of 243 statute miles.

Shortly after the ISS crew went to bed last night, the ISS flight controllers reported a loss of Command and Control Computer number one (C&C 1), one of three systems management computers on board. Overnight, flight controllers inititiated a procedure to re-string those functions through one of the two remaining backup computers that route data for systems management. This morning when Expedition Two Flight Engineer Susan Helms sent commands to transfer data files from the mass storage device, which houses the files for station systems management for the operation of the robotic work stations, the command was rejected.

After initial troubleshooting efforts failed to resolve the problem, flight controllers once again worked a procedure to re-string data management functions to the third computer, but the computer problem continued and flight control teams continued to evaluate the situation throughout the day.

Following a power cycle of command and control computer 1, the first of a series of diagnostic commands - this to turn on and off a light on board the Destiny laboratory - was successfully transmitted from the ground to the space station shortly before 7:30 p.m. Overnight the space station flight control team will attempt to reset the computers by commanding them from the "primary" to "standby" mode in an effort to clear any software interaction that might be causing the problems. If successful, this would allow the Expedition Crew and ground controllers to again interface with the command and control computers. The diagnostic troubleshooting will continue through the night.

The primary result of today's computer problem was a loss of communication and data transfer between the Space Station Flight Control Room and the station. Communication capability was routed through Endeavour enabling the crew and flight controllers to talk to one another.

Despite the difficulties encountered with the computer system today, all systems on board the spacecraft continued to function properly.

Several of the activities planned for today, including the handoff of a 3,000 pound pallete from the station's new robotic arm, back to the shuttle's arm, were postponed until Thursday, pending resolution of the computer issue. A reboost of the complex, using Endeavour's small thrusters, also was delayed. The crew members instead turned their attention to offloading experiment racks and equipment from the Raffaello logistics module, and transferring the experiments and hardware to the station.

Once the computer difficulties are resolved, Helms and crew mate Jim Voss will command the station's new Canadarm2 to maneuver the pallet within reach of Endeavour's robotic arm under control of mission specialists Chris Hadfield and Scott Parazynski.

Shortly before 7 p.m. Central, Mission Control said goodnight to both crews following a busy day on orbit. Expedition Two Commander Yury Usachev, Voss and Helms are slated to wake up about 2:30 a.m. Thursday; the seven astronauts on board Endeavour will receive a wake-up call from Mission Control about 10 minutes later.

Mission Specialist Scott Parazynski, at the controls of the shuttle's robotic arm and assisted by European Space Agency Astronaut Umberto Guidoni, grappled the 14,700 pound "moving van," undocking it from the Destiny laboratory and carefully maneuvering it into position before securing it in the payload bay. Over the course of the past week, the astronauts and cosmonauts on board the station transferred 6,000 pounds of equipment from Raffaello to the station, and then stowed unneeded equipment and hardware on board for return.

The unberthing of Raffaello followed last night's work by ground controllers to successfully synchronize timers on all the on-board computers, including the one operational Control and Command (C&C) computer in Destiny. With the one operational C&C computer, and Susan Helms at the ready with a back-up laptop computer in Unity, the crew was given a "go" to begin the undocking procedure about 2:20 p.m. today.

Work to recover the command and control computers continued throughout the day today, with good progress reported, and a reload of software currently under way to restore C&C computer number three to full performance. C&C computer number one was determined to have a failed hard drive. That C& C computer will be replaced on orbit with a backup payload computer, called Payload Computer Two, so that the failed C&C computer can be returned to Earth for inspection and analysis. Overnight, flight controllers will reload software on C&C number one in the hopes of bringing it back on line as well.

The plan for the crew tomorrow, assuming a minimum of two C&C computers are up and functioning, would see Helms and crew mate Jim Voss operating the station's robotic arm to hand off its cradle to the shuttle's robot arm, being commanded by Mission Specialists Scott Parazynski and Chris Hadfield on board Endeavour. Most of the activities planned for a "dress rehearsal" of the maneuvers the arm will perform during the next station assembly mission to install an airlock have been deleted from the timeline. Only the portions of the rehearsal related to shuttle robotic arm camera views will be performed.

Earlier today, NASA and the Russian Aviation and Space Agency, Rosaviakosmos, reached a decision on the launch of the Soyuz replacement vehicle, for 2:37 a.m. central time Saturday. Rosaviakosmos has agreed to delay the Soyuz docking to the station if additional time is required to resolve command and control problems aboard the station.

Mission managers will assess the need for that additional docked day of operations based on specific criteria, including a minimum of two fully functioning command and control computers, securing the Canadarm2 cradle pallet back in Endeavour's payload bay, successfully reloading software in Command and Control computer Three, and completing final transfer activities between the station and shuttle.

With another busy day behind them, the two crews were bid goodnight by Mission Control and will be awakened at 2:41 a.m. Saturday. Both spacecraft are in good condition, orbiting the Earth every 92 minutes.

The successful exchange of the pallet was the last remaining major objective of the mission to be accomplished and could pave the way for Endeavour to undock from the station Sunday morning, if computers on board can be placed in a stable configuration overnight. Mission managers had established three specific criteria to be met prior to Endeavour's undocking. The criteria were to reberth the cradle pallet in the shuttle's payload bay, complete final transfer activities and place the station's command and control (C&C) computers in a stable configuration.

With the pallet securely in Endeavour's payload bay and all final transfer items in place, the one remaining item is to ensure the computer system is in a stable configuration prior to Endeavour's departure. Overnight, flight controllers will uplink a series of commands designed to restore the two computers to full capability. C&C three is in an acceptable condition, although it is known to have a bad hard drive. Helms and crew mate Jim Voss will perform repair work on that computer at a later date.

A final decision whether to undock Endeavour - and delay the docking of the Soyuz replacement vehicle - is expected late tonight or early Sunday morning.

After spending much of this morning refining procedures to minimize inputs to the station's primary command and control computer, which developed problems accessing its hard drive, Space Station Flight Director Mark Ferring gave the Expedition Two crew a "go" to begin with arm operations at 1:27 p.m. With Helms working at the robotic work station, first motion of the station arm occurred at 3:01 p.m. Through a series of carefully choreographed commands, the station arm was maneuvered into its handoff position. Hadfield then slowly moved Endeavour's 50-foot long robot arm into position to latch onto the cradle, which was securely attached to the station arm at 3:43 p.m. At 4:02 p.m., as the two spacecraft flew over British Columbia, the pallet changed hands.

Both arms then began backing away - with the station arm now under command of Voss, according to plan. Hadfield then stowed the pallet in Endeavour's payload bay at 4:51 p.m.

Earlier in the day, Voss informed flight controllers that Endeavour crew members were helping with maintenance activities on the station's treadmill, called TVIS, installing new hardware to allow the Expedition crew to once again use it for exercise. The treadmill's walking surface had degraded and the crew had been told not to use it until repairs were made. Voss reports repairs are now about 50 per cent complete.

After enjoying a meal together, both crews were scheduled to go to sleep shortly after 7 p.m. Both crews will enjoy an extra hour of sleep, waking up just before 4 a.m.

Due to a compressed schedule tomorrow, the in-flight crew news conference, originally scheduled for 6:15 a.m. Sunday, has been canceled.

If a decision is made to undock tomorrow, the astronauts and cosmonauts will exchange final farewells about 9:30 a.m. and then begin closing the hatches between the two spacecraft. Undocking would occur at 12:34 p.m. central. Pilot Jeff Ashby would then slowly back Endeavour away to a distance of approximately 450 feet, where he will begin a three-quarter circle flyaround of the station before commanding a final separation burn signaling Endeavour's final departure from the station. With an undocking Sunday, the mission is scheduled to conclude with a landing at the Kennedy Space Center at 8:04 a.m. Central time Tuesday.

The station's two backup command and control computers remain off line. Attempts overnight to reload software in one of the computers were not successful. Analysts on the ground have uncovered an error in the software load that they believe may have been the source of the problem. Further efforts to reload software into the backup computers are expected to resume later this morning.

Even if backup computers are not yet on line, the crew may be given a go today to use the station's robotic arm in an abbreviated maneuver to hand a carrier pallet to Endeavour's arm so that it may be stowed aboard the shuttle for a return to Earth. If so, the joint robotic activities would begin no earlier than 8 a.m. to allow time for managers to thoroughly evaluate the plan.

Meanwhile, the crews are using the shuttle's robotic arm and cameras and the station's cameras to calibrate the Space Vision System, a precision alignment aid for operators of the robotic arm, and gather information that will help prepare for the next shuttle mission to visit the station. On that flight, planned for launch in June, the Space Vision System will be a key aid for using the station arm to attach a new airlock to the station. The crew also is continuing the transfer of equipment from the shuttle to the station during the day, and may work on some station maintenance tasks. A joint crew press conference, during which the 10 astronauts and cosmonauts will field questions from U.S., Canadian and European media, is planned at 1:41 p.m. CDT.

Shortly after Endeavour's crew awoke today, Mission Control reported to them the successful launch of a replacement Soyuz spacecraft bound for the station from the Baikonur Cosmodrome in Kazakstan. The Soyuz, with a taxi crew of Commander Talgat A. Musabaev, Flight Engineer Yuri M. Baturin and American businessman Dennis Tito, will replace the Soyuz spacecraft now attached to the station, which is nearing the end of its lifetime as a station emergency "lifeboat." The new Soyuz is tentatively planned to dock with the station at 3:05 a.m. CDT Monday, however the Soyuz docking plans will be delayed if a decision is made to further extend Endeavour's stay at the station.

The shuttle crew was awakened today to the song "Dangerous," sung by The Arrogant Worms, played for Canadian Astronaut Chris Hadfield at the request of his wife. The station and shuttle are in an orbit of about 250 by 235 statute miles.

As Pilot Jeff Ashby slowly backed Endeavour away, Commander Kent Rominger and Expedition Two flight engineer Susan Helms exchanged final wishes for Endeavour's planned return to Earth, and a continued safe journey for the station crew. Once Endeavour was at a distance of 450 feet from the station, Ashby initiated a three-quarter circle flyaround of the station as Mission Specialist Yuri Lonchakov activated a large-format IMAX camera in Endeavour's payload bay to photograph the station.

At 1:28 p.m., with the flyaround complete, Ashby fired a separation burn, initiating Endeavour's final departure from the orbiting complex, now equipped with a new Canadian-built robotic arm and communications antenna, installed by Mission Specialists Scott Parazynski and Chris Hadfield during two space walks. During eight days of joint operations, the two crews also transferred more than three tons of supplies, equipment and scientific experiments to the station.

On board the station, the Expedition Two crew - Commander Yury Usachev and Flight Engineers Jim Voss and Helms - will enjoy some time off this afternoon following a busy week on orbit. Early Monday morning, they will support the docking of a replacement Soyuz spacecraft that will serve as the station's "lifeboat." The Soyuz and its crew of three - Commander Talgat Musabayev, Flight Engineer Yuri Baturin and American businessman Dennis Tito -- is scheduled to dock at 2:52 a.m. Monday.

Endeavour's crew will go to sleep shortly after 4:30 p.m. today, awakening at 1:41 a.m. Monday to begin what should be their final full day on orbit. Endeavour is scheduled to return to the Kennedy Space Center, weather permitting, at 8:03 a.m. Tuesday. The primary activity for the crew on Monday will center on Endeavour's return to Earth, with Rominger, Ashby and Flight Engineer John Phillips verifying the performance of Endeavour's flight control surfaces and steering jets. Hadfield, Parazynski, Lonchakov and Umberto Guidoni will begin stowing away much of the equipment the crew has used over the past 11 days on orbit. All seven crew members are scheduled to participate in a press conference, talking with media in the U.S., Canada and Italy, at 10:01 a.m. Monday.

The Soyuz has a lifetime on orbit of about six months. The crew of the Soyuz which docked today, commander Talgat Musabayev, Flight Engineer Yuri Baturin and American businessman Dennis Tito, will return to Earth aboard the Soyuz capsule that launched the Expedition One crew to the station last Oct. 31. That Soyuz has been at the station since it docked there Nov. 2.

When this morning's docking occurred, the shuttle Endeavour was about 78 statute miles ahead of the space station. Its seven crewmembers will spend today preparing for its return to Earth. Landing is scheduled for 8:04 a.m. CDT Tuesday at Kennedy Space Center in Florida. Endeavour crewmembers were awakened at 12:41 a.m. by music from the soundtrack of the movie Gladiator.

Today, shuttle Commander Kent Rominger, Pilot Jeff Ashby and Flight Engineer John Phillips will test Endeavour's flight control surfaces and steering jets. Canadian astronaut Chris Hadfield, mission specialist Scott Parazynski, cosmonaut Yuri Lonchakov and European Space Agency astronaut Umberto Guidoni will stow away much of the equipment the crew has used over the past 11 days in space. All seven crewmembers are also scheduled to participate in a press conference with media in the U.S., Canada and Italy at 10:01 a.m.

Endeavour accomplished all of its major mission goals during the eight days it was docked to the space station. Parazynski and Hadfield installed and helped test a new Canadian-built robotic arm on the space station during two spacewalks that lasted a total of 14 hours and 50 minutes. Hadfield made history on that first space walk by becoming the first Canadian astronaut to ever walk in space. Working with the station's Expedition Two crew, Russian Commander Yury Usachev and astronauts Jim Voss and Susan Helms, they transferred more than three tons of supplies, equipment and scientific experiments to the station, then repacked 1,600 pounds of equipment that was no longer needed aboard the station.

Space station flight controllers were successful overnight in reformatting the hard drive on new Command and Control (C&C) Computer One, which was originally a payload computer. Controllers then copied all the software from the prime C&C 2, to the C&C 1 hard drive. After more testing later today, the station's three C&Cs will have two hard drives that contain all the necessary software to run the station's systems.

Mission Specialists Chris Hadfield, Scott Parazynski, Yuri Lonchakov and Umberto Guidoni stowed away much of the equipment the crew has used over the past 11 days in space. All seven crew members also were scheduled for some time off today to relax. Preliminary forecasts at the three-mile long Shuttle Landing Facility in Florida are not promising for tomorrow's opportunities, with the possibility of rain and high winds in the area. The back-up landing site at Edwards Air Force Base in California has been called up to provide Entry Flight Director LeRoy Cain and his team of flight controllers with additional options in returning Endeavour to Earth. There are two opportunities for Endeavour to return to the Kennedy Space Center tomorrow. The first would see a deorbit burn to slow Endeavour down and drop it out of orbit, occuring at 6:55 a.m., with landing to follow at 8:04 a.m. Central time. There is a second opportunity one orbit later with a deorbit burn at 8:31 a.m. resulting in a 9:39 a.m. landing. There are also two opportunities to land at Edwards Air Force Base tomorrow, at 11:11 a.m. and 12:47 p.m. respectively. Throughout the night, flight controllers will continue to look at weather conditions at both landing sites formulating plans to bring Endeavour home. Endeavour's crew is scheduled to be awakened at 11:41 p.m. today and will begin preparations for their possible return trip home shortly after 3 a.m. tomorrow. In the meantime, with the arrival of the three-member Soyuz taxi crew, the first activity on board the International Space Station today was an extensive safety briefing conducted by Expedition Two Commander Yury Usachev. The briefing included familiarizing the crew with station systems and evacuation routes. Crew members then swapped their custom-fitted Soyuz seatliners from one vehicle to another, and transferred some cargo from Soyuz to the station, setting up a plasma crystal experiment.

With continuing cloud cover, rain showers and gusty winds at the Kennedy Space Center, Entry Flight Director LeRoy Cain waved off landing opportunities there and elected to return to the West Coast where weather conditions were perfect for today's landing. Today's landing was the 48th at Edwards Air Force Base in shuttle program history.

Endeavour's crew - Commander Kent Rominger, Pilot Jeff Ashby and Mission Specialists Scott Parazynski, Chris Hadfield, John Phillips, Yuri Lonchakov and Umberto Guidoni - is expected to remain overnight in California, returning to Houston Wednesday afternoon.

During 11 days on orbit, eight of which were spent in joint operations with the International Space Station crew, Endeavour's crew installed a new robotic arm called Canadarm2, and transferred more than 6,000 pounds of equipment, experiments and supplies between vehicles.

A public welcome home ceremony for the crew is slated for 4 p.m. at Hangar 990 at NASA's Ellington Field.

Two opportunities to land at Edwards are available today. For the first, the deorbit burn would occur at 10:03 a.m. central time with landing at 11:11 a.m. The second would see a deorbit burn at 11:39 a.m. and touchdown at 12:47 p.m. Forecasters said weather at Edwards is ideal. Endeavour, which was launched April 19, brought an advanced and more powerful robotic arm, Canadarm2, to the International Space Station. The shuttle also delivered to the station more than 6,000 pounds of equipment and supplies, much of it transported in the Italian-built Multipurpose Logistics Module named Raffaello. Among equipment aboard Raffaello were two new scientific experiment racks for the space station's U.S. laboratory Destiny. Endeavour's crew, Commander Kent Rominger, Pilot Jeff Ashby and Mission Specialists Chris Hadfield of the Canadian Space Agency, John Phillips, Scott Parazynski, Umberto Guidoni of the European Space Agency and Cosmonaut Yuri Lonchakov, were awakened at 11:48 p.m. by "Truth," performed by Spandau Ballet. The wakeup music was for Rominger, requested by his family.

The first opportunity of the day to land Endeavour at the Florida spaceport has already been passed up and flight controllers continue to plan for a landing on the second and final opportunity at Kennedy today. But spacecraft communicators told Endeavour's crewmembers that if a second Florida waveoff occurs, they likely would land at Edwards later today. Two opportunities to land at Edwards are available today. For the first, the deorbit burn would occur at 10:03 a.m. central time with landing at 11:11 a.m. The second would see a deorbit burn at 11:39 a.m. and touchdown at 12:47 p.m. Forecasters said weather at Edwards is ideal. Endeavour, which was launched April 19, brought an advanced and more powerful robotic arm, Canadarm2, to the International Space Station. The shuttle also delivered to the station more than 6,000 pounds of equipment and supplies, much of it transported in the Italian-built Multi-Purpose Logistics Module named Raffaello. Among equipment aboard Raffaello were two new scientific experiment racks for the space station's U.S. laboratory Destiny. Endeavour's crew, Commander Kent Rominger, Pilot Jeff Ashby and Mission Specialists Chris Hadfield of the Canadian Space Agency, John Phillips, Scott Parazynski, Umberto Guidoni of the European Space Agency and Cosmonaut Yuri Lonchakov, were awakened at 11:48 p.m. by "Truth," performed by Spandau Ballet. The wakeup music was for Rominger, requested by his family.