Tiny spherules pepper a sandy surface in this 3-centimeter (1.2-inch) square view of the Martian surface. The largest one is broken in half and shows little internal texture—typical of these “blueberries” on the Meridiani Plains. Opportunity took this image while the target was shadowed by the rover’s instrument arm. This image is from the National Air and Space Museum exhibition “Spirit & Opportunity: 10 Years Roving Across Mars.” Click here to learn more.
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