Mars Exploration Rover

Author(s): Endeavor35

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NASA's Mars Exploration Rovers, named Spirit and Opportunity, were two identical rovers that explored the Martian surface from 2004 to 2018. Designed to only last 90 days, the rovers managed to operate for many years. Spirit was active until 2010, while Opportunity did so until 2018. The latter rover currently holds the record as the longest surface mission ever attempted on Mars

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