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    NEW YORK - JULY 16: A prototype model of Space Shuttle reusable engines is displayed at "The Space Sale" auction of NASA artifacts at Bonhams New York July 16, 2009 in New York City. Rare NASA items, including Apollo 11 artifacts, are being auctioned off to coincide with the 40th anniversary of the historic Apollo 11 manned lunar landing. (Photo by Mario Tama/Getty Images)