Edited Mars Reconnaissance Orbiter image of ice in a Martian north polar crater being monitored for changes. Color variant.

Edited Mars Reconnaissance Orbiter image of layers of material on the Martian South Polar Layer.

Edited Mars Reconnaissance Orbiter image of a recent impact crater.

Edited Mars Reconnaissance Orbiter image of a complex-looking crater in Utopia Planitia. Slightly cleaned up version (I removed green streaks from the original image).

Edited Mars Reconnaissance Orbiter image of a layered mound with sand dunes in Juventae Chasma. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a circular depression (bottom of image) in the south polar ice cap of Mars. Color variant.

Edited Mars Reconnaissance Orbiter image of sand dunes on the base of Huggins Crater with lines from dust devils crossing the dune field. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of ridges and sand dunes on Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes in Mclaughlin Crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of rugged terrain on a crater floor.

Edited Mars Reconnaissance Orbiter image of an ice-filled crater in the northern plains of Mars.

Edited Mars Reconnaissance Orbiter image of a dune field in a crater in Mars' southern hemisphere. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of an ancient lava flow in Alba Fossae on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter</b image of layered mesas in Lycus Sulci. Color variant.

Edited Mars Reconnaissance Orbiter image of sand dunes called "Kohlar."

Edited Mars Reconnaissance Orbiter image of chaotic, uplifted bedrock on Mars.

Edited Mars Reconnaissance Orbiter image of light-colored (which appear white in some conditions) rocky formations on the bottom of Pollack Crater on Mars.

Edited Mars Reconnaissance Orbiter image of the residual south polar ice cap.

Edited Mars Reconnaissance Orbiter image of a crater that is on the edge of a valley rim in Capri Chasma on Mars. Processing variant.

Edited Mars Reconnaissance Orbiter image of a crater with sand dunes on the floor (and imaged to monitor its slopes). Color variant.

Edited Mars Reconnaissance Orbiter image of the steep scarp on the edge of the north polar ice cap. Grayscale close-up.

Image source: www.uahirise.org/ESP_054663_2650

Original caption: HiRISE has been re-imaging regions first photographed in 2006 through 2007, six Mars years ago. This long baseline allows us to see large, rare changes as well as many smaller changes.

One of the most actively changing areas on Mars are the steep edges of the North Polar layered deposits. This image shows many new ice blocks compared to an earlier image in December 2006. An animation shows one example, where a section of ice cliff collapsed. The older image (acquired in bin-2 mode) is not as sharp as the newer one.

Written by: Alfred McEwen (audio: Tre Gibbs) (25 June 2018)

Edited Mars Reconnaissance Orbiter image of sand dunes. Color variant.

Edited Mars Reconnaissance Orbiter image of chaos terrain on Mars. Processing variant.

Edited Mars Reconnaissance Orbiter image of a small part of Ius Chasma.

Edited Mars Reconnaissance Orbiter image of the central peak of a crater near Bonstell Crater on Mars. Color variant.

Edited Mars Reconnaissance Orbiter image of sand on the floor of Pasteur Crater. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a sediment lens in Jezero Crater.

Edited Mars Reconnaissance Orbiter image of rocky terrain near Nili Fossae.

Edited Mars Reconnaissance Orbiter image of fan material in southern Gale Crater (away from Curiosity). Color/processing variant.

Edited Mars Reconnaissance Orbiter PR image of northern Meridiani Planum. Color/processing variant.

Original caption: This image from NASA's Mars Reconnaissance Orbiter (MRO) of northern Meridiani Planum shows faults that have disrupted layered deposits. Some of the faults produced a clean break along the layers, displacing and offsetting individual beds (yellow arrow).

Interestingly, the layers continue across the fault and appear stretched out (green arrow). These observations suggest that some of the faulting occurred while the layered deposits were still soft and could undergo deformation, whereas other faults formed later when the layers must have been solidified and produced a clean break.

The map is projected here at a scale of 50 centimeters (19.7 inches) per pixel. [The original image scale is 54.6 centimeters (21.5 inches) per pixel (with 2 x 2 binning); objects on the order of 164 centimeters (64.6 inches) across are resolved.] North is up.

This is a stereo pair with ESP_053038_1835.

The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colorado. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.

Image Credit:

NASA/JPL-Caltech/Univ. of Arizona

Image Addition Date:

2017-12-12

Edited Mars Reconnaissance Orbiter image of a degraded crater in bedrock.

Edited Mars Reconnaissance Orbiter image of gullies on the slopes of a crater on Mars.

Edited Mars Reconnaissance Orbiter image of gullies on the slopes of a crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a crater with sand dunes on the floor (and imaged to monitor its slopes).

Edited Mars Reconnaissance Orbiter image of mesas in Arabia Terra with stair step slopes.

Edited Mars Reconnaissance Orbiter image of pits in Amazonis Planitia.

Edited Mars Reconnaissance Orbiter image of sand in Pasteur Crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of clay rich deposits from a degraded crater.

Edited Mars Reconnaissance Orbiter (At least I think it's from MRO) image of banded terrain on Mars.

Edited Mars Reconnaissance Orbiter image of material in Terby Crater on Mars.

Edited Mars Reconnaissance Orbiter image of a recent (as in sometime in the last ten years) crater with a dark slope streak headed away from it, caused after the strike. An older avalanche can be seen to the left of the slope streak. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a part of Daedalia Planum showing a valley with sand dunes and lots of very straight dust devil tracks. Processing variant.

Edited Mars Reconnaissance Orbiter image of the site of possible human exploration on Mars in Zephyria Planum.

Edited Mars Reconnaissance Orbiter image of reddish plateaus and mesas with sand dunes and bedrock. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a stratified knob and a linear ridge on Mars.

Edited Mars Reconnaissance Orbiter image of the entrance to Mawrth Vallis.

Edited Mars Reconnaissance Orbiter image of an avalanche from the edge of Mars' north polar ice cap, dropping dust and material onto the surface below - you can see the dust blow up by the avalanche in the upper-left corner of the image. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a dune field with spiders (a geologic feature, not arachnid).

Edited Mars Reconnaissance Orbiter image of a candidate site in Chryse Planitia (near Maja Valles) for human exploration on Mars.

Edited Mars Reconnaissance Orbiter image of light-colored (which appear white in some conditions) rocky formations on the bottom of Pollack Crater on Mars. Color/processing variant.