Discovery completed its final spaceflight mission last March 2011.
The transfer is one that is both emotional and amazing, as the Discovery shuttle piggybacks on a Boeing 747 carrier jet from Kennedy Space Center. The plane and the shuttle touched down at Washington Dulles International Airport at around 11:00 AM EDT, but not before doing a loop first around the U.S. capital.
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Discover was first launched to space back in August 1984. Discovery was NASA's Orbiter Fleet leader, having flown 39 successful missions in over 27 years of service.