On This Day in Space! Oct. 4, 1957: Sputnik 1 becomes 1st human-made satellite
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On Oct. 4, 1957, the Soviet Union launched Sputnik 1, the satellite that started the Space Race.
Sputnik 1, Earth’s First Artificial Satellite in Photos
Sputnik 1 was the first human-made object to orbit the Earth, and it set off a wave of fear and anxiety across the U.S. now known as the “Sputnik crisis.” Sputnik was a metal sphere roughly 2 feet (58 cm) in diameter with four long radio antennas. These antennas transmitted little beeping pulses down to Earth that even amateur radio operators could hear.
The satellite spent 21 days in orbit before it burned up in Earth’s atmosphere.
Catch up on our entire “On This Day In Space” series on YouTube with this playlist.
On This Day in Space Archive!
https://www.youtube.com/watch?v=videoseries
Still not enough space? Don’t forget to check out our Space Image of the Day, and on the weekends our Best Space Photos and Top Space News Stories of the week.
Email Hanneke Weitering at hweitering@space.com or follow her @hannekescience. Follow us @Spacedotcom and on Facebook.
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