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Soviet/ Russian dog abord Sputnik 2
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Launched by Thor-Able Rocket
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Soviet/Russian
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Soviet/Russian
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First probe to escape Earth velocity.
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First spacecraft to explore the Asteroid Belt, fly by Jupiter and leave the Solar System
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The mission was funded by MirCorp
Leasing the station from Energia
Energia, the Russian company that operated Mir for the Russian government
Date is unknown? -