NSF - NASASpaceflight.com(@NASASpaceflight):On this day in 1957, the Soviet Union successfully launched the first-ever human-made object to orbit the Earth. Sputnik 1 launched from the Baikonur Cosmodrome and remained operational for 21 days, sending an easy-to-track radio signal. The spacecraft burned up on January 4, 1958, when it re-entered Earth's atmosphere.

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NSF - NASASpaceflight.com@NASASpaceflight

2026.10.04 18:13

On this day in 1957, the Soviet Union successfully launched the first-ever human-made object to orbit the Earth. Sputnik 1 launched from the Baikonur Cosmodrome and remained operational for 21 days, sending an easy-to-track radio signal. The spacecraft burned up on January 4, 1958, when it re-entered Earth's atmosphere.