Fresh Crater Exposing Buried Ice on Mid-Latitude Mars
The image is an excerpt from an observation from NASA's Mars Reconnaissance Orbiter showing a meteorite impact that excavated this crater on Mars exposed bright ice that had been hidden just beneath the surface at this location.
Seasonal Changes in Dark Marks on an Equatorial Martian Slope
These images from NASA's Mars Reconnaissance Orbiter show how the appearance of dark markings on Martian slope changes with the seasons. The marks, called recurrent slope linea extend down slopes during warmer months.
This image from NASA's Mars Reconnaissance Orbiter includes an especially long example of a type of dark marking that advances down some Martian slopes in warmer months and fades away in cooler months.
Erosion Patterns May Guide Mars Rover to Rocks Recently Exposed
These two images come from the HiRISE camera on NASA's Mars Reconnaissance Orbiter. Images of locations in Gale Crater taken from orbit around Mars reveal evidence of erosion in recent geological times and development of small scarps, or vertical surfaces
Possible Extent of Ancient Lake in Gale Crater, Mars
This illustration depicts a concept for the possible extent of an ancient lake inside Gale Crater. The base map combines image data from the Context Camera on NASA's Mars Reconnaissance Orbiter and color information from Viking Orbiter imagery.
In this image from NASA's Mars Reconnaissance Orbiter, we see an intersection of several fractures on the floor of Echus Chasma. One 'sector' appears to have been filled by a more recent viscous lava flow.
Does this observation from NASA's Mars Reconnaissance Orbiter show a possible proto-pedestal crater? This crater has a ring trough, but the inner circle around the crater does not appear significantly elevated.
Many types of craters exist on Mars. Most are generated by impacts of asteroids and comets. However, in this image captured by NASA's Mars Reconnaissance Orbiter, the craters may be due to steam explosions.
Hints of an Ancient Shoreline in Southern Isidis Planitia
This area seen by NASA's Mars Reconnaissance Orbiter is known as the Deuteronilus contact of the Isidis Basin; it has been interpreted as a possible ancient shoreline. There are also suggestions that this contact is of volcanic origin.
This non-circular pit seen in this image from NASA's Mars Reconnaissance Orbiter is due to a low angle impact from an asteroid or comet. The raised plateau west of the crater was where most of the impact debris landed.
This particular area, called Mangala Valles and located near the Tharsis region, may be an example of the action of liquid water in the ancient Martian past. This image is from NASA's Mars Reconnaissance Orbiter.
The North Polar region of Mars is capped with layers of water ice and dust, called the 'polar layered deposits.' This permanent polar cap is covered in the winter with a layer of seasonal carbon dioxide ice as seen by NASA's Mars Reconnaissance Orbiter.
Sinuous Ridge Cutting Across Geologic Units of the Medusae Fossae Formation
Shown here is an exceptionally long sinuous ridge, possibly an inverted fluvial feature, that cuts across newly mapped geologic units of the Medusae Fossae Formation, from NASA's Mars Reconnaissance Orbiter.