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When the sovia union lauched spunik its started the cold war with the U.S.A. the US thought when the union launched the spunik 1they could shoot missles.
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The U.S lauched the explorer 1 to fight back agianst the union
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the US sent Exploer 2 but it didnt make it into orbit.
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the first satellite lauched by the US
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the first man made machine to land on the moon
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the luna 3 was the first to take photographs of the world
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the US launches the first weather satellite into orbit
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the union launch first person in to space in luna 1
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Alan B. Shepard was the first American in space
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Neil Armstrong and Edwin "Buzz" Aldrin were the first people to walk on the moon