who invented electronic mission?
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Sputnik 1 was the first artificial Earth satellite. The Soviet Union launched it into an ... Mission duration, 21 days ... An electrical short caused the vernier engines to put the missile into an ...
Mission duration: 21 days
Launch date: 4 October 1957, 19:28:34 UTC
Launch mass: 83.6 kg (184 lb)
Orbits completed: 1440
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