NASA's Space Shuttle Discovery flew it's final flight on April 17, 2012, soaring over Washington, D.C. on it's way to a permanent installation at Dulles International Airport. After 30 years, NASA ended the space shuttle program last summer.
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NASA's orbiters "Atlantis"(foreground) and "Discovery" meet on the tow way between the Vehicle Assembly Building and the Orbiter Processing Facility at the Kennedy Space Center, Florida on March 9, 2012. UPI/Joe Marino-Bill Cantrell
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