January 31, 1958 Historical Events 1958 – Explorer program Explorer 1 – The first successful launch of an American satellite into orbit 1958 – James Van Allen discovers the Van Allen radiation belt Holy Toledo!Explorer 1 became the first successfully launched satellite by the United States when it was sent to space on January 31, 1958 A quick response to the Soviet Union's launch of Sputnik 1, Explorer 1's success marked the beginning of the US Space Age The satellite, which was designed, built and operated by the NASA Jet Propulsion LaboratoryJan 15, 21 · Explorer 1 was the first satellite launched by the United States when it was sent into space on January 31, 1958 Following the launch of the Soviet Union's Sputnik 1 on October 4, 1957, the US Army Ballistic Missile Agency was directed to launch a satellite using its Jupiter C rocket developed under the direction of Dr Wernher von Braun
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January 31 1958 explorer 1