Sputnik 1 (/ˈspʌtnɪk, ˈspʊtnɪk/; see § Etymology) was the first... - dofaq.co
Sputnik 1 (/ˈspʌtnɪk, ˈspʊtnɪk/; see § Etymology) was the first...Sputnik 1 (/ˈspʌtnɪk, ˈspʊtnɪk/; see § Etymology) was the first artificial Earth satellite.[5] It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before its three silver-zinc batteries ran out, and continued in orbit for two months until aerodynamic drag caused it to fall back into the atmosphere on 4 January 1958.
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