Photos: Shuttle Discovery's last flight
Space Shuttle
Credit: AP
STS-133 mission specialist Nicole Stott waves to employees as fellow mission specialist Michael Barratt looks on after leaving the Operations and Checkout Building at Kennedy Space Center in Cape Canaveral, Fla. on Thursday, Feb. 24, 2011. The space shuttle Discovery is scheduled to lift off Thursday afternoon on an 11-day mission to the international space station. (AP Photo/Terry Renna)
![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]")
