RAT (Rock Abrasion Tool)
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NASA's Mars Exploration Rover Opportunity used its rock abrasion tool on a rock informally named 'Gagarin,' leaving a circular mark.…

This image shows two flat-topped, layered rocks with angular edges almost side by side, except they are separated by a…

These four images were taken by NASA's Mars Exploration Rover Opportunity on Nov. 3 and 4, 2005, before and after…

NASA's Mars Exploration Rover Spirit took this image on March 31, 2004, after the rover's rock abrasion tool had brushed…

This image was taken by NASA's Mars Exploration Rover Spirit during the rover's grinding of the rock dubbed 'Mazatzal.' Dark…

This image was taken by NASA's Mars Exploration Rover Spirit's panoramic camera during the rover's grinding of the rock dubbed…

This image was taken by NASA's Mars Exploration Rover Spirit during the rover's grinding of the rock dubbed 'Mazatzal' with…

This close-up image taken by NASA's Mars Exploration Rover Spirit's microscopic imager shows a section of the hole drilled into…

This enhanced-color image NASA's Mars Exploration Rover Spirit shows the rock dubbed 'Mazatzal' after a portion of its surface was…


