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Intercontinental ballistic missile, USSR
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First artificial satellite, USSR
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First dog in orbit (Laika), USSR
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First US satellite;detection of Van Allen belts
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First communication satellite, USA
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Artificial satellite (Sun's), USSR
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Weather satellite, USA
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Reconnaissance satellite, USA
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Photo of earth from space, USA
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Probe to the moon, USSR
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Photo of the far side of the moon, USSR
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