Explorer 1 was the first satellite launched by the United States in 1958 and was part of the U.S. participation in the International Geophysical Year (IGY). The mission followed the first two satellites the previous year; the Soviet Union's Sputnik 1 and Sputnik 2, beginning the Cold War Space Race between the two nations. WebAug 11, 2016 · Discoverer I, launched Feb. 28, 1959, was the first polar-orbiting satellite. Discoverer II, launched April 13, 1959, was the first satellite to be stabilized in orbit in all three axis to be ...

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Web46 rows · The first artificial Earth satellite, Sputnik 1, was launched by the Soviet Union on October 4, 1957. The first human to go into space, Yuri Gagarin, was launched, again … paradise pier hotel disneyland prices

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WebRCA promptly leased circuits on the Canadian satellite until they could launch their own satellite. The first U.S. domestic communications satellite was Western Union's WESTAR I, launched on April 13, 1974. In December of the following year RCA launched their RCA SATCOM F- 1. In early 1976 AT&T and COMSAT launched the first of the COMSTAR … WebMar 7, 2014 · An Early History of Satellites Timeline March 7, 2014 The Space Race of the 1950s saw the Soviet Union and United States competing to send the first artificial … WebOn 31 January 1958, a US Army Jupiter-C rocket launched Explorer I, the first American satellite, into earth orbit. The success of Explorer I, coming three months after the Soviet Union successfully orbited Sputnik I, the first artificial earth satellite, represented the highlight of US participation in the International Geophysical Year (IGY). おしゃれ bgm フリー 洋楽