An anonymous reader writes: They've dealt with software glitches, a damaged and useless front wheel, and fierce dust storms that cut their electrical power production. Still, the two NASA Mars rovers continue to explore the Red Planet and beam back scientific data... possibly through to 2009 with a recently announced project extension. So far, NASA said, Spirit has driven 4.51 miles and sent back more than 102,000 photos of its exploration, while Opportunity has driven about 7.19 miles and sent back more than 94,000 images.
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