LOS ANGELES — 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 — 1ƒ 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.

Read more in Saturday’s Arizona Daily Star or StarNet.