Mars Exploration Rover

NASA's Mars Exploration Rover (MER) Mission is an ongoing robotic mission of exploring Mars, that began in 2003 with the sending of two rovers — MER-A Spirit and MER-B Opportunity — to explore the Martian surface and geology. Primary among the mission's scientific objectives is to search for and characterize a wide range of rocks and soils that hold clues to past water...
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Start date:

  • 2003

Also known as:

  • MER

Space Mission

Destination:

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