Rover Gives NASA an "Opportunity" to View Interior of Mars

NASA's Mars exploration rover Opportunity is allowing scientists to get a glimpse deep inside Mars.

Perched on a rippled Martian plain, a dark rock not much bigger than a basketball was the target of interest for Opportunity during the past two months. Dubbed "Marquette Island," the rock is providing a better understanding of the mineral and chemical makeup of the Martian interior.



"Marquette Island is different in composition and character from any known rock on Mars or meteorite from  [...]

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