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Sputnik, the first artificial satellite, was launched into space by the Soviet Union.
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Laika, the first mammal, was sent into orbit around Earth by the Soviet Union.
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The U.S. launches its first earth satellite.
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The United States begins the Mercury Program.
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Yuri Gagarin was the first man sent into space, he was from the Soviet Union.
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The U.S. sends the first astronaut, Alan Shepard, into space.
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United States begins Apollo Space Program.
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The United States begins the Gemini Program.
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The first American astronaut, John Glenn, orbits around Earth.
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Valentina Tereshkova was the first woman sent into space, she was from the Soviet Union.
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Neil Armstrong is the first astronaut to land on the Moon.
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Voyager 1 and 2 probes are launched by the U.S.
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STS-1 was the first space shuttle mission.
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Galileo is destroyed in space.
