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Period: to
Space Exploration
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First Earth Orbiter
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First Lunar Fly By
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First Lunar impact
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First images of far side of moon
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First Manned Earth Orbiter
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First Succesful Venus Flyby and First Succesful planetary encounter
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First Mars flyby
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First Venus impact
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First Luner lander
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First Lunar orbiter
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First Venus atmospheric probe
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First lunar flyby and return to Earth
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First manned lunar orbiter
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First manned Lunar landing
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First Venus lander
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First robotic lunar sample return
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First lunar rover
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First Mars impact
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First Mars lander and first Mars atmospheric probe
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First Mas orbiter
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First Jupiter flyby
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First Saturn flyby
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First Mercury flyby
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Closest Solar approach
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First comet flyby
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First Saturn orbiter
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First Titan lander
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First comet coma return
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First Solar wind sample return
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First comet impact
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First Pluto flyby