This is the calibration target for the Mars Hand Lens Imager (MAHLI) aboard NASA’s Mars rover Curiosity. Includes a metric bar graphic, color references, a Lincoln penny as a size reference and a stair-step pattern for depth calibration.   Image credit: NASA/JPL-Caltech/Malin Space Science Systems  

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Wheels and a Destination. Image Credit: NASA/JPL-Caltech/Malin Space Science Systems

This view of the three left wheels of NASA’s Mars rover Curiosity combines two images that were taken by the rover’s Mars Hand Lens Imager (MAHLI) during the 34th Martian day, or sol, of Curiosity’s work on Mars (Sept. 9, 2012).

In the distance is the lower slope of Mount Sharp.

Curiosity’s underside self-portrait as imaged by the MAHLI camera. Credit: EPA/NASA/JPL-Caltech/Malin Space Science Systems

via NASA