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More Details for 1999-12-25

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Christmas Day onboard the Shuttle Discovery began with seasons greetings for Commander Curt Brown, as the crew awoke to Bing Crosby's "I'll Be Home for Christmas."

"Merry Christmas to all of you down there," replied Brown. "And Hubble will be home for Christmas 'cause today we're going to set her free."

Discovery's astronauts will be doing the gift-giving this afternoon as they return the Hubble Space Telescope to orbit, allowing it to continue its astronomical observations. About 1:45 p.m. CST, European Space Agency astronaut Jean-Francois Clervoy will use Discovery's robot arm to firmly grasp the telescope. After a series of commands to disconnect from external power and confirm Hubble is ready for release, Clervoy will gently lift it out of the support structure in Discovery's payload bay where it has rested since he first plucked it from orbit on December 21. The telescope's aperture door will be commanded open and at 4:50 p.m., Clervoy will release the upgraded telescope.

Hubble's capabilities were enhanced over the course of three spacewalks, lasting a combined total of 24 hours, 33 minutes. Spacewalking astronauts Steve Smith, John Grunsfeld, Mike Foale and Claude Nicollier installed six new gyroscopes, six Voltage/Temperature Improvement Kits, a new more efficient computer, and a refurbished Fine Guidance Sensor. Functional checks and tests of the hardware indicate that the new equipment is working properly and will further enhance the Hubble's scientific capabilities.

This afternoon, the spacewalking team, including arm operator Clervoy, will take a break from their duties to discuss the progress of the mission so far in a series of interviews with CNN, the Associated Press and the Fox News Network. That interview is scheduled for 7:12 p.m. today.

Discovery is in an orbit with a high point of 380 miles and a low point of 363 miles with all systems on board performing well.