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sent to take pictures and explore and look at atmosphere of Mars. they found volcano and lava plains.
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went to mars to investigate mars martian atmosphere, took many pictures
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went to jupiter and saturn to conduct close up studies, it explored both planets and all of jupiter's moons + saturn rings
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went to venus to take global images of surfaces
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went to venus and around earth and venus's moon, europa to study them and they found that europa has an icy surface
