5 years ago
Silent Mars Rover Opportunity Marks 15 Years on Red Planet in Bittersweet Anniversary
NASA's Opportunity rover has now been on Mars for 15 years, but the milestone is a bittersweet one. Opportunity touched down on the night of Jan. 24, 2004, a few weeks after its twin, Spirit, landed on a different patch of Red Planet ground. Both solar-powered rovers embarked on three-month missions to search for signs of past water activity — and both delivered in spades, finding plenty of such evidence and continuing to roam long after their warranties expired.
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