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The Soviet Union launches the first satellite.
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The Soviet spacecraft Sputnik 2 is launched with a dog who does not survive the voyage.
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The Soviet craft Sputnik 5 is launched, carrying the dogs Strelka and Belka.
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Russian cosmonaut Yuri Gagarin becomes the first human in space.
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The spacecraft Mariner 4 transmits the first pictures of Mars.
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The Soviet spacecraft Zond 5 was launched and later becomes the first spacecraft to orbit the moon and return to Earth.
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Skylab
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Apollo 13 is launched.
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Space Shuttle program
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The U.S. launches its first space station, Skylab.
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Mars Observer is launched.
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Contact with Pioneer 10 is lost