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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The Space Shuttle Discovery, attached to the back of a Boeing 747 airplane, passes over the Washington Monument, in Washington, Tuesday April 17, 2012. (AP Photo/Cliff Owen)