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50th Anniversary of Explorer 1

News • January 31st, 2008

Today is the 50th anniversary of the launch of America’s first satellite, Explorer 1. Explorer 1 was designed and built at the Jet Propulsion Laboratory (JPL). Following the establishment of NASA an Explorer program was developed to provide frequent flight opportunities for scientific investigations from space and has had over 70 successful missions. WISE is one of the latest in the Explorer line, a Medium Class Explorer (MIDEX), which is managed by JPL.