The last Discovery Space Shuttle flight took place Tuesday April 17th 2012 mounted atop the NASA 905 Boeing 747 Shuttle Carrier Aircraft. After 39 missions in space totaling 365 days, Discovery left the Kennedy Space Center in Florida at 6:58 am as the pair treated spectators to a graceful fly-by. The arrival four hours later at the nation’s capital Washington Dulles International Airport was graced with similar historical solemnity with an overflight of the National Mall and other iconic buildings.