Mars Rovers

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These two test rovers and a flight spare represen three generations of Mars rovers developed at NASA's Jet Propulsion Laboratory, Pasadena, California. Front and center is the flight spare for the first Mars rover, Sojourner, which landed on Mars in 1997 as part of the Mars Pathfinder Project. On the left is a Mars Exploration Rover Project test rover that is a working sibling to Spirit and Opportunity, which landed on Mars in 2004. On the right is a Mars Science Laboratory test rover the size of that project's Mars rover, Curiosity, which landed on Mars in August 2012.

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NASA Jet Propulsion Laboratory

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