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June 30, 2008
The task of the Mars Exploration Rovers, which were launched to Mars on June 10 and July 7, 2003, are to search for answers about the history of water on Mars. The indications are that Mars had a wet past. The twin rovers landed on Mars in January 2004, 45 months ago, on missions originally planned to last 90 days.
Shadow of a Martian Robot, Opportunity Rover, 2008
Moving from place to place, the rovers perform on-site geological investigations. Each rover is sort of the mechanical equivalent of a geologist walking the surface of Mars.
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