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February 13, 2019 07:28 pm

NASA's Mars Rover Opportunity Concludes a 15-Year Mission

For more than 14 years, the Opportunity rover crawled up and down craters, snapped pictures of a strange landscape and revealed surprising glimpses into the distant past of Mars. On Wednesday, NASA announced that Opportunity, the longest-lived robot ever sent from Earth to the surface of another planet, is dead. The New York Times: "It is therefore that I am standing here with a deep sense of appreciation and gratitude that I declare the Opportunity mission is complete," said Thomas Zurbuchen, NASA's associate administrator for science. That ends a mission of unexpected endurance: it was designed to last only three months. Opportunity provided scientists a close-up view of Mars that they had never seen: finely layered rocks that preserved ripples of flowing water several billion years ago, a prerequisite for life. The steady stream of photographs and data from Opportunity -- as well as its twin, Spirit, which survived until 2010 -- also brought Mars closer to people on Earth. Because the rovers continued so much longer than expected, NASA has now had a continuous robotic presence on Mars for more than 15 years. That streak seems likely to continue for many more years. A larger, more capable rover, Curiosity, arrived in 2012, and NASA is planning to launch another in 2020. Live telecast here.

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