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The first artificial satellite was Sputnik 1 launched by USSR on 4th October 1957 followed by Sputnik 2 on November 3th. Sputnik was launched by the Sputnik Rocket also known as R-7 Semyorka. The first US artificial satellite was Explorer 1 launched on 1st February 1958; it was launched by the spacecraft Juno 1.
