Edited Mars Reconnaissance Orbiter image of layers or rock peeking out from sand dunes in Danielson Crater on Mars. Inverted grayscale variant.

Edited Mars Reconnaissance Orbiter image of a pit in Ulysses Fossae.

Edited Mars Reconnaissance Orbiter image of Mawrth Vallis, and the strange mottled landscape. Processing variant.

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

Edited Mars Reconnaissance Orbiter image of melting from multiple impact strikes.

Edited Mars Reconnaissance Orbiter image of a pit on Mars. Cropped, processing variant that lets you see the bottom.

Edited Mars Reconnaissance Orbiter image of layered rocks and sinuous ridges in the north Hellas Region of Mars. Color variant.

Edited Mars Reconnaissance Orbiter image of chaotic terrain in Eos Chasma. Color variant.

Edited Mars Reconnaissance Orbiter image of sand dunes in a crater north of Antoniadi Crater.

Edited Mars Reconnaissance Orbiter image of fans of material in Roddy Crater.

Edited Mars Reconnaissance Orbiter image of deltas on Mars, looking for clinoforms (some type of geologic feature).

Edited Mars Reconnaissance Orbiter image of southern Isidis Planitia.

Edited Mars Reconnaissance Orbiter image of slope streaks and dust from a crater near by on Mars.

Edited Mars Reconnaissance Orbiter image of a pit near the Elysium Mons volcano. Processing variant.

Edited Mars Reconnaissance Orbiter image of frost and patterns on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of the Gigas Sulci region of Mars.

Edited Mars Reconnaissance Orbiter image of ridges in the Hellas Planitia region of Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of geodiversity in Mawrth Vallis on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of colorful landforms in Mawrth Vallis on Mars.

Edited Mars Reconnaissance Orbiter image of convoluted folds in deposits on the floor of Ius Chasma.

Edited Mars Reconnaissance Orbiter image of gullies and exposed colors.

Edited Mars Reconnaissance Orbiter image of teardrop defrosting on sand dunes on Mars. Red channel.

Edited Mars Reconnaissance Orbiter image of Ladon Valles.

Edited Mars Reconnaissance Orbiter image of a filled-in channel and an infilled (using NASA's terminology) crater near Quenisset Crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of slopes being monitored for changes on Mars.

Edited Mars Reconnaissance Orbiter image of an abrupt cliff next to a canyon in Aureum Chaos.

Edited Mars Reconnaissance Orbiter image of flow patterns in Nili Patera.

Edited Mars Reconnaissance Orbiter image of sand dunes in Hyperborei Cavi. (I love Martian names.) Color/processing variant.

Edited Mars Reconnaissance Orbiter image of secondary impact craters and their shapes on Mars.

Edited Mars Reconnaissance Orbiter PR image of a scoured section of the floor of Eos Chasma. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes named Tleilax.

Edited Mars Reconnaissance Orbiter image of chaotic terrain in Eos Chasma.

Edited Mars Reconnaissance Orbiter image of flow ridges in brain terrain (what a wonderful name for a type of terrain!) in Claritas Fossae. Color variant.

Edited Mars Reconnaissance Orbiter image of sandstone in west Candor Chasma on Mars.

Edited Mars Reconnaissance Orbiter image of colorful bedrock in a crater on Mars' northern plains. Color/processing variant.

Edited Mars Reconnaissance Orbiter of sedimentary rock layers in Terby Crater on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of an uplift in terrain on Mars.

Edited Mars Reconnaissance Orbiter image of pretty blue (at least in the released images from NASA as well as how I processed them) sand dunes on top of ridges on Mars.

Edited Mars Reconnaissance Orbiter image of part of Gale Crater. Processing variant.

Edited Mars Reconnaissance Orbiter image of snow (I presume carbon dioxide snow but certainly could be wrong) on the tops of sand dunes on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes in Capen Crater. Color variant.

Edited Mars Reconnaissance Orbiter image of steep slopes in Melas Chasma being monitoring for changes.

Edited Mars Reconnaissance Orbiter image of part of the Goronum Chaos region of Mars.

Edited Mars Reconnaissance Orbiter image of a circular feature (not necessarily a crater) in the residual ice cap of the South Pole of Mars. PR version.

Edited Mars Reconnaissance Orbiter image of dust and dune formation in western Medusa Fossae on Mars.

Edited Mars Reconnaissance Orbiter image of Mars near Endeavour Crater, where Opportunity is currently getting ready for her seventh, six-month-long winter.

Edited Mars Reconnaissance Orbiter image of ejecta west of Hargraves Crater on Mars. Processing variant.

Edited Mars Reconnaissance Orbiter context image of erosion in Cerberus Fossae. Processing variant.

Colorized via an on-line AI program (demos.algorithmia.com/colorize-photos/) image from Mars Reconnaissance Orbiter of plains and craters.

Edited Mars Reconnaissance Orbiter image of frost patterns in Louth Crater on Mars. Processing variant.