Comment () Tweet By ALICIA CHANG, Associated Press LOS ANGELES (AP) — NASA's Opportunity rover is rolling across the Martian surface again, leaving behind a clay-rich rock in search of more discoveries. Mission managers said Friday that the plan calls for arriving at its new destination — 1 1/2 miles to the south — by August so that the solar-powered rover can be in a favorable spot before the next Martian winter. Opportunity has been exploring Endeavour Crater since 2011. It's the largest of five craters examined by the six-wheel rover so far and contains some of the oldest deposits dating back to the first billion years of Mars' history. Before trekking off last month,...
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