What is Mt. Sharp?
A piece of Gale crater, Mars: What exactly is Mt. Sharp, the big mountain Curiosity is set to climb up? Here’s a picture of what it is: layers and layers and layers and layers. And more layers. Probably sedimentary, but also possibly with some volcanic ash. Each layer tells its own story about some period in the distant past on Mars, and here are just a few of them, exposed by erosion for your viewing pleasure. (HiRISE PSP_008002_1750)