PIA05502: Rock Dusting Leaves "Mickey Mouse" Mark
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  Mars Exploration Rover (MER)
 Spacecraft:  Spirit
 Instrument:  Miniature Thermal Emission Spectrometer 
Navigation Camera 
Rock Abrasion Tool (RAT) 
 Product Size:  965 x 957 pixels (w x h)
 Produced By:  JPL
 Full-Res TIFF:  PIA05502.tif (924.7 kB)
 Full-Res JPEG:  PIA05502.jpg (144.2 kB)

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This image taken by the navigation camera on the Mars Exploration Rover Spirit shows the rock dubbed "Humphrey" and the circular areas on the rock that were wiped off by the rover. The rover used a brush on its rock abrasion tool to clean these spots before examining them with its miniature thermal emission spectrometer. Later, the rover drilled into the rock with its rock abrasion tool, exposing fresh rock underneath.

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