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Successful space missions
Soviet inventions
1957 in the Soviet Union
Animal testing in the Soviet Union
Dogs in the Soviet Union
Sputnik
1958 in the Soviet Union
Spacecraft launched in 1957
Spacecraft which reentered in 1958
Earth observation satellites of the Soviet Union
Biosatellites

Sputnik 2: page information

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CreatedJun 17, 2026, 5:17 AM

UpdatedJun 17, 2026, 6:26 PM