Eroded Sediments in West Candor Chasma on Mars. This image shows a steep-sided depression in light-toned, layered rocks in the Valles Marineris canyon system. This formation, known as Ceti Mensa, is located in western Candor Chasma in the northern Valles.
The Dotted Dunes of Mars. As spring dawns on the Northern Hemisphere of Mars, dunes of sand near the poles begin to defrost. Thinner regions of ice typically thaw first revealing sand whose darkness soaks in sunlight and accelerates the thaw.
On the far left (or bottom) dark sand covers the ground, while the center shows a transition to a dune field. On the far right (or top) a transition is made to a much lighter surface, likely containing a larger amount of ice.
Amazing new images from Mars rover Awesome views, including some selfies, from the Mars Curiosity rover. The rover is looking across Gale Crater, approaching a large dune with ripples by Mars Science Laboratory Curiosity.