PIA05978: Rock Interior Exposed Near 'Endurance'
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  Mars Exploration Rover (MER)
 Spacecraft:  Opportunity
 Instrument:  Microscopic Imager
 Product Size:  2075 x 2036 pixels (w x h)
 Produced By:  JPL
 Full-Res TIFF:  PIA05978.tif (3.342 MB)
 Full-Res JPEG:  PIA05978.jpg (830.3 kB)

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This mosaic of four images from the microscopic imager on NASA's Mars Exploration Rover Opportunity shows the freshly exposed interior of a rock dubbed "Lion Stone" after the rover's rock abrasion tool ground away a circular patch of the rock's surface. The circle is 45.5 millimeters (1.8 inches) in diameter. Opportunity took the images during its 108th sol (martian day) on Mars, on May 13, 2004.

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