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Mars 3 was an unmanned space probe of the Soviet Mars program which spanned the years between 1960 and 1973. Mars 3 was launched nine days after its twin spacecraft Mars 2. The probes were identical robotic spacecraft, each consisting of an orbiter and an attached lander. After Mars 2 crash-landed on the martian surface, Mars 3 lander became the first spacecraft to attain soft landing on Mars. Both probes were launched by Proton-K rockets with Blok D upper stages. ==Overview== * Launch Date/Time: * * Mars 3: May 28, 1971 at 15:26:30 UTC * Launch mass (including fuel): * * Combined: * * Orbiter: * * Lander: * On-orbit dry mass: * Dimensions: tall, across ( across with solar panels deployed) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mars 3」の詳細全文を読む スポンサード リンク
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