NASA's Space Shuttle Endeavour prepares for launch at the Kennedy Space Center

STS 126 Mission Specialist 5 Sandra Magnus waves to the media prior to departing for launch pad 39 A at the Kennedy Space Center in Florida on November 14, 2008. NASA's Space Shuttle Endeavour is scheduled to launch at 7:55 PM to the International Space Station for a fifteen day mission to conduct maintenance on the outpost. (UPI Photo/Joe Marino - Bill Cantrell)