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This NASA file image shows Apollo 11 U.S. astronaut Buzz Aldrin standing on the Moon, next to the Lunar Module "Eagle" (R), July 20, 1969. Apollo 11 was launched forty years ago today on July 16, 1969, and carried astronauts Neil Armstrong, who was the Mission Commander and the first man to step on the Moon, Aldrin, who was the Lunar Module Pilot, and Michael Collins, who was the Command Module pilot. Armstrong took this photograph. (REUTERS / Maggie Fox)