Space Shuttle Discovery makes her last flight – photos

THE space shuttle Discovery mated atop a 747 carrier aircraft sits on the tarmac at Dulles International Airport in Chantilly, Va., before take-off. Discovery, the longest-serving orbiter will be placed to its new home, the Smithsonian’s National Air and Space Museum’s Steven F. Udvar-Hazy Center in Chantilly, Va. Photos:

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People watch and photograph from the base of the Washington Monument as space shuttle Discovery, mounted on the Shuttle Carrier Aircraft, flies over the National Mall in Washington, Tuesday, April 17, 2012. Discovery is en route from Kennedy Space Center to the Smithsonian National Air and Space Museum Udvar/Hazy Center. (AP Photo/Ann Heisenfelt)