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The first man-made satellite , Sputnik -I was launched by the former USSR in -
1957
1955
1970
1967
ANSWER : 1
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In October 1957, the Soviet Union launched Sputnik 1, the world's first artificial satellite. The 184 - pound 22.5 - inch sphere orbited the earth once every 96 minutes. Sputnik transmitted radio signals for 21 days and later burned up in the earth's atmosphere.
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