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Spacecraft
Names
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Mariner
4, 6, 7 flyby, late 1960s
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Mariner
9 orbit, 1971
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(recall
Mariner
10 flew by Venus and Mercury)
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Mars
2 (Soviet), 1971
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Viking
1 and 2, 1975, 1976
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Mars
Global Surveyor (1997-)
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Mars
Pathfinder(1997)
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Several
others unsuccessful
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Mars
Polar Lander (1999,
Bad leg sensor?)
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Mars
Climate Orbiter (1999
unit conversion)
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Mars
Observer (1993 bad transistor?)
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2 Soviet
(late 1980s)
Viking
Lander full-sized replica
Mars
Global Surveyor
Mars
pathfinder
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