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First Earth orbiter
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Period: to
Space Exploration
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First lunar flyby
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Fist lunar impact
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First images of far side of Moon
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Firsst manned Earth orbiter
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First successful Venus flyby and first successful planetary encounter
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First Mars flyby
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First Venus impact
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First lunar 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 (short-lived) and first Mars atmospheric probe
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First Mars 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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First Venus orbiter
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First Venus orbiter
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First images from surface of Venus
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First long-lived lander and first pictures from Martian surface
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Closest solar approach
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First Uranus/first Neptune flyby
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First to leave Solar System and farthest human-made object-currently more than 110 AU
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First comet flyby
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First Asteroid flyby, first Asteroid moon discovery, first Jupiter orbiter/atmospheric probe/largest moons flybys
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First near-Earth asteroid flyby, first asteroid orbit and first asteroid landing
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First near-Earth asteroid flyby
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First Mars rover
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First Saturn orbiter and first Titan
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First comet coma sample return
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First solar wind sample return
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First Pluto/Charon and Kuiper Belt flyby
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First comet impact