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The USSR launches the first man-made object to orbit the Earth, Sputnik I, in 1957.
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Neil Armstrong and Edwin Aldrin were the first men to ever walk on the moon.
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The US Apollo 15 was the the first mission to use moon rovers to drive across the moon's surface.
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On March 19, 1981, the US launched the first Space Shuttle Columbia.
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Christa McAuliffe. First Educator involved in orbital mission. Tragic Challenger explosion.
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The Hubble Space Telescope is launchedby the US to record information about our solar system and the universe.
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The Mars Rover land and explorers the surface of Mars.
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Voyager I reaches the edge of the solar system.