NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
Bathurst Inlet. Close-up of a rock called Bathurst Inlet on the surface of Mars taken by the Mars Hand Lens Imager (MAHLI) on NASA's Curiosity Rover. The rock is dark grey and appears to be so fine-grained that MAHLI cannot resolve grains or crystals in it. This means that the grains or crystals, if there are any at all, are smaller than about 80 microns in size. Imaged on 2nd October 2012.
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