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Period: to
Space Exploration
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First Earth Orbiter
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Earth Orbiter
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First Lunar Flyby
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Attempet Lunar Orbiter
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– First manned Earth orbiter
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First successful Venus flyby and first successful planetary encounter
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Attempet Lunar Lander
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First Mars Flyby
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Lunar Impact
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First Lunar Lander
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First lunar flyby and return to Earth
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First lunar flyby and return to Earth
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First manned lunar Landing