Sputnik 1 was the first artificial satellite to go around the Earth. It was made by the Soviet Union. It was launched on 4 October 1957 at Baikonur Cosmodrome. It orbited (went around) the Earth for three months. It carried a radio transmitter. It did 1,440 orbits of the Earth during this time. It went down into Earth's atmosphere on 4 January 1958 and burned up.
Replica of Sputnik 1
|Mission type||Technology demonstration|
|Harvard designation||1957 Alpha 2|
|Mission duration||21 days|
Ministry of Radiotechnical Industry
|Launch mass||83.6 kg (184 lb)|
|Dimensions||58 cm (23 in) diameter|
|Start of mission|
|Launch date||4 October 1957, 19:28:34UTC|
|Launch site||Baikonur 1/5|
|End of mission|
|Last contact||26 October 1957|
|Decay date||4 January 1958|
|Semi-major axis||6,955 km (4,322 mi)|
|Perigee||215 km (134 mi)|
|Apogee||939 km (583 mi)|
|Epoch||4 October 1957, 15:12 UTC|
(20.005 MHz - 40.002 MHz)
The United States was very surprised when the Soviet Union sent Sputnik 1 into space. It did not want to fall behind. So, it began spending more money on science and education. This was when the Space Race between the Soviet Union and the United States began.
- Wade, Mark. "Sputnik 1". Encyclopedia Astronautica. Archived from the original on 27 December 2016. Retrieved 8 January 2017.
- "Sputnik 1". NASA NSSDC. Retrieved 2011-12-24.
- Calmes, Jackie (2010-12-06). "Obama Calls for New 'Sputnik Moment'". The New York Times. Retrieved 2011-12-24.
- Siddiqi, Asif A. (2003). Sputnik and the Soviet Space Challenge. Universityy of Florida Press. p. 155. ISBN 0-8130-2627-X.