Sputnik 4 Satellite
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Sputnik 4 How Sputnik Worked Oct. 4, 1957 - Sputnik, the Dawn of the Space Age - NASA Sputnik 4 Satellite
March 15, 2025
Sputnik 4 How Sputnik Worked Oct. 4, 1957 - Sputnik, the Dawn of the Space Age - NASA Sputnik 4 Satellite