Various NASA Footage; Challenger Space Shuttle Explosion, Challenger Astronauts, Astronauts putting flag on Moon, Astronauts walking on the Moon, Astronauts driving Moon buggy, Space Pod landing on Moon. The National Aeronautics and Space Administration (NASA, pronounced /ˈnæsə/) is an Executive Branch agency of the United States government, responsible for the nation's civilian space program and aeronautics and aerospace research. Since February 2006, NASA's self-described mission statemen
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