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from | Encarta |  |
Sputnik 1 |
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| Launched on October 4, 1957, the Sputnik 1 was the first craft in Earth’s orbit. Named after the Russian word for “traveling companion of the world” (Sputnik Zemli), it was a small satellite measuring only 58 cm (23 in) across. It circled the earth once every 96.2 minutes and transmitted atmospheric information by radio. After three months aloft, it was destroyed while reentering the atmosphere. | ||||||
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| SPL/Science Source/Photo Researchers, Inc. | ||||||
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| Appears in these articles: | ||||||
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| Artificial Satellite; Sputnik; Science; Union of Soviet Socialist Republics; Space Exploration | ||||||
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