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First intercontinental ballistic missile
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First artificial satellite First signals from space
October 4, 1957
First artificial satellite
First signals from space -
First dog in orbit (Laika)
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First US satellite, detection of Van Allen radiation belts
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First solar-powered satellite
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First communications satellite
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First rocket engine restart in Earth orbit First lunar spacecraft First detection of solar wind
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First human-made object in heliocentric orbit
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First weather satellite
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First satellite in a polar orbit