This vertically exaggerated view shows scalloped depressions in a part of Mars where such textures prompted researchers to check for buried ice, using ground-penetrating radar aboard NASA's Mars Reconnaissance Orbiter.
These prominent surface features are found near Mars' south pole, and are believed to be linked to seasonal changes. "The trapped carbon dioxide gas that carves the spiders in the ground also breaks through the thawing ice sheet.
This view from the Mast Camera on NASA's Curiosity Mars rover shows dramatic buttes and layers on the lower flank of Mount Sharp. It is a mosaic of images taken on the Martian day, or sol, of Curiosity's work on Mars.
These images highlight the spectacular Vivaldi peak-ring basin and its ejecta blanket. The top image was acquired with MESSENGER's Wide Angle Camera, and the white box shows the location of the bottom image, acquired about a …