Rare NASA artifacts to go on sale at Christie's in New York
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A photograph signed and inscribed "Tranquility Base, July 20, 1969, Buzz Aldrin" on display at a press preview at Christie's in New York on Wednesday, July 10, 2019. The auction, called One Giant Leap: Celebrating Space Exploration 50 Years After Apollo 11, includes nearly 200 artifacts from NASA missions in the 1960s and 1970s, including the Gemini and Apollo programs. [Photo: VCG/Timothy A. Clary]