Sputnik 1 (/ ˈ s p ʌ t n ɪ k, ˈ s p ʊ t n ɪ k /, Russian: Спутник-1, Satellite 1), sometimes referred to as simply Sputnik, was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program.

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As a technical achievement, Sputnik caught the world's attention and the American public off-guard. Its size was more impressive than Vanguard's intended 3.5-pound payload.

2025年1月17日 · Sputnik, a series of three Soviet artificial satellites. Sputnik 1 (launched October 4, 1957) was the first artificial satellite and the beginning of the ‘space race’ between the U.S. and the Soviet Union. Sputnik 2 carried the dog Laika, the first living creature in space.

2022年10月4日 · Launched as a contribution to the International Geophysical Year (IGY), Sputnik weighed 184 pounds and orbited the Earth every 90 minutes, sending out a signal that amateur radio operators around the world could monitor.

History changed on October 4, 1957, when the Soviet Union successfully launched Sputnik I. The world's first artificial satellite was about the size of a beach ball (58 cm.or 22.8 inches in diameter), weighed only 83.6 kg. or 183.9 pounds, and took about 98 minutes to …

Sputnik 1, launched on 4 October 1957 from the Soviet Union's rocket testing facility in the desert near Tyuratam in the Kazakh Republic, proved a decidedly unspectacular satellite that probably should not have elicited the horrific reaction it wrought.

2015年5月1日 · The Sputnik 1 spacecraft was the first artificial satellite successfully placed in orbit around the Earth and was launched from Baikonur Cosmodrome at Tyuratam (370 km southwest of the small town of Baikonur) in Kazakhstan, then part of the former Soviet Union.

2009年11月24日 · The Soviet Union inaugurates the “Space Age” with its launch of Sputnik, the world’s first artificial satellite, on October 4, 1957. The spacecraft, named Sputnik after the Russian word for...

2024年7月3日 · On October 4, 1957, the Soviet Union successfully launched Sputnik-1, the world's first artificial satellite. Only about the size of a beach ball (22.8 inches or 58 cm. in diameter) and weighing 183.9 pounds (83.6 kg), it orbited the Earth in around 98 minutes.