File:Rat post grind.jpg

Summary

DescriptionRat post grind.jpg	English: The round, shallow depression in this image resulted from history's first grinding of a rock on Mars. The rock abrasion tool on NASA's Spirit rover ground off the surface of a patch 45.5 millimeters (1.8 inches) in diameter on a rock called Adirondack during Spirit's 34th sol on Mars, Feb. 6, 2004. The hole is 2.65 millimeters (0.1 inch) deep, exposing fresh interior material of the rock for close inspection with the rover's microscopic imager and two spectrometers on the robotic arm. This image was taken by Spirit's panoramic camera, providing a quick visual check of the success of the grinding. The rock abrasion tools on both Mars Exploration Rovers were supplied by Honeybee Robotics, New York, N.Y. Esperanto: loko de unua ŝlifado de la marsosurfaco por akiri esploreblan materialon
Date	Taken on 6 February 2004
Source	https://photojournal.jpl.nasa.gov/catalog/PIA05223 (image link)
Author	NASA/JPL/Cornell

This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA05223.

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File:Rat post grind.jpg

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6 February 2004

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