Sputnik 1 - Wikipedia
2019-6-23 · Sputnik 1 (/ ˈ s p ʊ t n ɪ k / or / ˈ s p ʌ t n ɪ k /; "Satellite-1", or "PS-1", Простейший Спутник-1 or Prosteyshiy Sputnik-1, "Elementary Satellite 1") was the first artificial Earth satellite. The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957, orbiting for three weeks before its batteries died, then silently for two more months before ...
