https://history.nasa.gov/sputnik/

Sputnik and The Dawn of the Space Age. History changed on October 4, 1957, when the Soviet Union successfully launched Sputnik I. The world's first ... Council of Scientific Unions decided to establish July 1, 1957, to December 31, 1958, ...

https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1957-001B

The Sputnik 1 spacecraft was the first artificial satellite successfully placed in orbit ... Several replicas of the Sputnik 1 satellite can be seen at museums in Russia ...

https://en.wikipedia.org/wiki/Sputnik_1

Sputnik 1 was the first artificial Earth satellite. The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957, ...

https://www.space.com/38331-sputnik-satellite-fun-facts.html

Oct 2, 2017 ... The first-ever artificial satellite took to the skies on Oct. 4, 1957. The launch of that craft, the Soviet Union's Sputnik 1, kicked off the space age ...

https://www.space.com/17563-sputnik.html

Aug 22, 2018 ... Sputnik 1 and Sputnik 2 sent a shockwave through the American public. ... With a single shot, the Soviet Union not only launched the first ...

https://www.history.com/this-day-in-history/sputnik-launched

Jun 14, 2019 ... The Soviet Union inaugurates the “Space Age” with its launch of Sputnik, the world's first artificial satellite. The spacecraft, named Sputnik after ...

https://www.youtube.com/watch?v=cLWQFN3iqME

Nov 11, 2008 ... Sputnik 1 was launched on October 4th 1957. The satellite was 58 cm (about 23 in) in diameter and weighed approximately 83.6 kg (about 183 ...

https://cosmosmagazine.com/space/how-sputnik-1-launched-the-space-age

Oct 4, 2017 ... In successfully launching and placing Sputnik 1 into a low elliptical orbit, the Soviet Union took first honours in the space race. This was the ...

http://www.russianspaceweb.com/sputnik.html

To meet politically important window, OKB-1 proposed the Soviet government an offer it could not refuse -- to precede Object D with a "prosteishy sputnik," or ...

https://www.britannica.com/technology/Sputnik

Sputnik, any of a series of 10 artificial Earth satellites whose launch by the Soviet Union beginning on Oct. 4, 1957, inaugurated the space age. Sputnik 1, the ...