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The first successful orbital satellite, Sputnik I was launched by the USSR (Soviet Union) on October 4, 1957. The US had been trying to launch their own satellites, but most failed due to malfunctions or miscalculations. After Sputnik, the US increased its budget for space efforts and worked to modify existing missiles as booster rockets. The US launched its first satellite, Explorer I, on January 31, 1958.

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13y ago

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