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Sputnik 50th Anniversary

Related Article: How Satellites Work

Watch this video about the 50th anniversary of the launch of Sputnik, the first satellite in space, on HowStuffWorks. On October 4, 1957 the former Soviet Union launched the Sputnik satellite into space and became the leader in the "space race". The Soviet Union also launched the first human into space. See how Sputnik worked in this news video from Reuters.

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Humans Already on Mars (0:37)

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Pilots and Astronauts: The Challenger Disaster (4:44)

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