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Launched in 1972 and weighing 258 kilograms (569 pounds), Pioneer 10 completed the first mission to the planet Jupiter and became the first of five artificial objects to achieve the escape velocity needed to leave the Solar System.
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Mariner 8 and 9 were virtually identical and designed to continue the atmospheric studies begun by Mariner 6 and 7, and to hopefully map over 70% of the Martian surface.
Mariner 8 and 9 were Identical
Launch of Mariner 9
Parts Diagram of Mariners 8 & 9
