Sputnik 3
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Sputnik 3 was a Soviet satellite launched on 15 May 1958 from Baikonur Cosmodrome by a modified R-7/SS-6 ICBM. The scientific satellite carried a large array of instruments for geophysical research of
A model of Sputnik 3 in the Tsiolkovsky State Museum of the History of Cosmonautics
1958 Soviet Union stamp
Sputnik 2
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Sputnik 2, or Prosteyshiy Sputnik 2, launched on 3 November 1957, was the second spacecraft launched into Earth orbit, and the first to carry an animal into orbit, a Soviet space dog named Laika.
Sputnik 3
…relatively simple "Prosteyshiy Sputnik-1" ("Simplest Satellite 1", or PS-1), also known as Sputnik 1, would be the first satellite to be launched instead. Sputnik 2 (PS-2) was also ready and therefore launched earlier than Object D. Sputnik 3 was launched by a modified R-7 Semyorka missile developed for satellite…
Model of Sputnik 2 at the Memorial Museum of Cosmonautics in Moscow
USSR postage stamp "Спутник-2"
Photograph of Sputnik 2 and its rocket taken by Air Force personnel at Air Force Missile Test Center, Patrick AFB, Florida, in March 1958.