This enhanced-color image from March 2012 of a region of Mars near Nili Fossae shows part of the ejecta from an impact crater and contains some of the best exposures of ancient bedrock on Mars. The impact broke up already diverse rocks types and mixed them together to create this wild jumble of colors, each representing a different type of rock.
This image was taken by the Mars Reconnaissance Orbiter’s HiRISE camera.
Image Credit: NASA/JPL-Caltech/University of Arizona
memphis: Phobos over Mars, photographed by Rosetta, 24th February 2007.
Phobos, the larger of Mars’ two small moons, in orbit over 15°N 75°E. At bottom of the image are the Syrtis Major highlands, shading into the lighter Isidis Planitia lowlands. The lines at left are the Nili Fossae. (In this image, east is up.)
Rosetta is on the way to study comet 67P/Churyumov–Gerasimenko, which it will reach this summer, but its route included three fly-bys of earth, close encounters with two asteroids, and a fly-by of Mars.