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Mysterious Mars Rock

Mystery Of 'Doughnut' Rock Solved

The Huffington Post | Sara Gates | Posted 02.14.2014 | Science

Remember that jelly doughnut-shaped rock that mysteriously "appeared" in front of the Mars Opportunity rover? It's no longer a mystery. Researcher...

Weird Rock 'Like Nothing We've Seen Before,' Mars Scientists Say | Tariq Malik | Posted 09.25.2014 | Science

A mystery rock on Mars that suddenly appeared in front of NASA's Opportunity rover may look like a tasty donut, but it is like nothing ever seen on th...