The Space Shuttle Discovery is surrounded by the Rotating Service Structure at the Kennedy Space Center in Cape Canaveral, Fla., Saturday, Dec. 9, 2006. NASA hopes to launch Discovery Saturday in a rare night launch if weather permits. (AP Photo/Paul Kizzle)
The space shuttle Discovery is seen on Launch Pad 39B covered by the protective Rotating Service Structure, with nearby flags showing wind conditions, as mission managers assess weather conditions which might prevent the scheduled launch at the Kennedy Space Center in Cape Canaveral, Florida December 9, 2006. REUTERS/Joe Skipper (UNITED STATES)