Tiny Martian moon Phobos, caught transiting the face of Mars by the European Space Agency’s Rosetta probe on February 24, 2007. Phobos is near the center top of the image, casting a shadow on the planet near the top left corner, and near the U-shaped crater that will be the landing site of NASA’s Curiosity Rover (image credit: ESA/Reprocessed by Gordan Ugarkovic).
Evidence of an ancient lake bed on Mars: dry channels and sediment in a delta pattern suggest that Eberswalde Crater may have held a lake of liquid water once in this image from the European Space Agency’s Mars Express Orbiter (image credit: ESA/DLR/FU Berlin/G. Neukum)
Early summer at the Martian North Pole: in summer, carbon dioxide ice evaporates away at the poles and into the Martian atmosphere, leaving only water ice behind for in this image of Chasma Borealis from the European Space Agency’s Mars Express Orbiter (image credit: ESA/DLR/FU Berlin/G. Neukum).
Burning Man, as seen yesterday from orbit by the European Space Agency’s PrOBA-1 microsatellite (image credit: ESA)