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oct. 4 1957 was when nasa finnaly decied to send the first satellite up to orbit around the earth and only took 96.2 minutes
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laike the spacedog she went underwent training with two other dog and was eventually selected to be the occupant of the soviet spacecraft known as the sputnik 2.
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This was the first Solar Powerd satellite it was called the vanguard 1-n21 and it was probally about the 3rd or 4th satellite to oribite the earth.
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lunna 2
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luuna3
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first animal to go inro space and come back down and make it alive
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Martiner 2 becomes the first spacecraft to fly by venus
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first human to land on the moon
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first fly by by mars
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first fly by, by mercury