Photos: Shuttle Discovery's last flight
Space Shuttle
Credit: ASSOCIATED PRESS
The space shuttle Discovery sits on the launch pad at Kennedy Space Center in Cape Canaveral, Fla., Thursday, Feb. 24, 2011. Discovery and her crew of six astronauts are scheduled to lift off this afternoon on an 11-day mission to the international space station. (AP Photo/Chris O'Meara)
![Space shuttle Discovery ready for voyage to museum [PHOTOS]](http://media.azfamily.com/images/96*53/SHUTTLE-BKGD.jpg "Space shuttle Discovery ready for voyage to museum [PHOTOS]")
