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This was when the Soviet Union first successfully launched the Sputnik I
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Initiaed in 1958, completed in 1963, Project Mercury was the United States' first man-in-space program.
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Gemini was named after the third constellation of the Zodiac and its twin stars.
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Heading for Mars
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It's space flight was from April 12, 1981 - April 14, 1981
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