At this very moment, on an alien world millions of miles from Earth, two wheeled robots named Spirit and Opportunity are dutifully exploring Mars. But by all previous accounts, these Mars Exploration Rovers (MERs) should have stopped functioning ages ago. After all, their warranty was only good for 90 days.
Sunday, July 23, 2006
Mars Mission Lasts Well Past Sell-By Date (Physics Org)
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