The Mars Pathfinder American robotic spacecraft is launched by NASA on December 4. 1996 aboard a Delta II booster. It landed a base station with a roving probe on Mars on July 4 1997. It was the first rover to operate outside the Earth–Moon system.
It consisted of a lander, renamed the Carl Sagan Memorial Station, and a lightweight, 10.6 kg (23 lb) wheeled robotic Mars rover named Sojourner. The mission carried a series of scientific instruments to analyze the Martian atmosphere, climate, and geology and the composition of its rocks and soil. The mission terminated in 1998.
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