STS-103 Day 7 Highlights

Back to STS-103 Flight Day 06 Highlights:

On Sunday, December 26, 1999, 8:00 a.m. CST, STS-103 MCC Status Report # 14 reports:

With their primary mission objectives successfully completed, Discovery's astronauts today begin preparing their spacecraft for its scheduled return to Earth Monday, checking out the flight control system and reaction control jets that support re-entry.

The seven astronauts were awakened at 7:50 a.m. to the song "We're So Good Together" by Reba McEntyre, played for Pilot Scott Kelly at the request of his wife.

This afternoon, Commander Curt Brown and Kelly will check out Discovery's flight control systems and surfaces to support Monday's planned return to the Kennedy Space Center. Later in the day, the astronauts will begin stowing the equipment they've used during the past week on orbit and start buttoning up Discovery's on-orbit systems. The Ku-band antenna, which provides most of the capacity for data and television relay, will be stowed around 8:45 p.m. today.

As the STS-103 mission winds down, the newly refurbished Hubble Space Telescope slowly moves through its checkout sequence prior to resuming science operations. Discovery's four space-walking astronauts spent 24 hours and 33 minutes upgrading and refurbishing the orbiting observatory, making it more capable than ever to renew its observations of the universe.

Hubble was released from the end of Discovery's robot arm at 5:03 p.m. Christmas Day. Less than half an hour later, controllers at the Space Telescope Operations Control Center in Maryland reported that the telescope was in normal operating mode. Controllers will perform two weeks of testing before observations resume. At 8 a.m. today, Hubble was approximately 45 miles away from Discovery and separating at the rate of about five miles per 90-minute orbit.

Also on tap at 10:50 a.m. today is the crew in-flight press conference with media at NASA Centers in the U.S. and reporters at European Space Agency sites in Geneva and Paris.

On Sunday, December 26, 1999, 10:00 p.m. CST, STS-103 MCC Status Report # 15 reports:

Following the successful deployment of the Hubble Space Telescope yesterday, the seven man crew aboard Space Shuttle Discovery turned its attention today to preparing for the return to Kennedy Space Center late tomorrow afternoon.

STS-103 Commander Curt Brown, along with Pilot Scott Kelly, first performed checks of the Flight Control System by activating one of the three Auxiliary Power Units aboard Discovery to allow them to test the various aerosurfaces that will be used to steer the Shuttle once it has re-entered the atmosphere. The crew then did a check of the Reaction Control System, the maneuvering jets that steer Discovery while the Shuttle is in space. Both the FCS and RCS checkouts were without issue, with all systems ready to support Discovery's return to Earth.

The weather forecast for the two available landing sites is very good for both a nominal end of mission as well as the two extension days that are planned into every Shuttle flight. The prediction for KSC on Monday is for only a few clouds at the upper levels and very good visibility. The only possible concern is crosswinds that are predicted to be near the peak of what is allowed at the three-mile-long Shuttle Landing Facility at KSC. Weather at the alternate landing site at NASA's Dryden Flight Research Center in Edwards, California also is predicted to be very good on Monday, with only a few high clouds and light winds. The extended forecast for both landing sites on Tuesday and Wednesday shows continued favorable weather.

At tonight's mission status briefing, Entry Flight Director Wayne Hale said that given the very good forecast at both landing sites for the next three days, the Shuttle team's current plan for Monday afternoon would be to try for the first two landing opportunities at KSC. If Discovery cannot land on one of those opportunities and the weather forecast for Tuesday and Wednesday remains the same, Discovery and her crew would be kept in orbit one additional day to try and allow a KSC landing on Tuesday. Shuttle managers would like to land at KSC if possible in order to avoid the work associated with transporting an orbiter from California back to Florida.

The first opportunity to land at KSC on Monday takes place on orbit 118 with a deorbit burn at 3:06 p.m. CST and a landing at KSC at 4:18 p.m. The second opportunity on orbit 119 would have a deorbit burn taking place at 4:49 p.m. and a landing at KSC at 6:00 p.m. CST. A third and final opportunity for a KSC landing is available on orbit 120 if needed. The third opportunity has a deorbit burn at 6:32 p.m. and landing at 7:43 p.m. CST.

Should the extended weather forecast change, there are landing opportunities at the Edwards site on the same three orbits, along with an additional opportunity on orbit 121.

The STS-103 crew will begin a planned eight-hour sleep period at 11:20 p.m. this evening. A wake-up call from Mission Control to begin what should be their final day in space for this flight will come at 7:20 a.m. on Monday.

Go to STS-103 Flight Day 8 Highlights: