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

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

STS 126 crew members (l to r) Shane Kimbrough, Donald Pettit, Eric Boe and Chris Ferguson pose for 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)