Mars 3

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.