Edited Mars Reconnaissance Orbiter image of ice blocks that fell during an avalanche between 2006 and 2012. Color/processing variant.

Edited Mars Reconnaissance Orbiter PR image (from its Flickr photostream) of terrain that looks hilly.

Edited Mars Reconnaissance Orbiter image of squiggle-like gullies in the Hellas Planitia region of Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image (very big!) of lobes of material in a crater on Mars. Color/processed variant.

Edited Mars Reconnaissance Orbiter PR image (from its Flickr photostream) of hills on a flat plain.

Edited Mars Reconnaissance Orbiter image of the Ceti Mensa region of Mars with its many layers. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of pits and craters in the Idaeus region of Mars. Processing variant.

Edited Mars Reconnaissance Orbiter image of part of Gale Crater.

Edited Mars Reconnaissance Orbiter image of sand dunes on the floor of Jeans Crater on Mars.

Edited Mars Reconnaissance Orbiter image of a crater in the Arabia region of Mars.

Edited Mars Reconnaissance Orbiter image of active sand dunes in Ganges Chasma on Mars.

Edited Mars Reconnaissance Orbiter PR image (from its Flickr photostream) of strange-looking terrain on Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes meeting at a 90° angle due to opposing winds. Color/processing variant (barely).

Edited Mars Reconnaissance Orbiter image of the floor of Coprates Chasma on Mars. IRB (infrared, red, blue) full version. Context image overlaid with the color image.

Edited Mars Reconnaissance Orbiter PR image (from its Flickr photostream) of a channel cut into the surface of Mars.

Edited Mars Reconnaissance Orbiter image of rocky mesas in the Nilosyrtis Mensae region. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes on a textured surface in a polar region (I don't recall seeing which pole in the original caption but suspect it's the north polar region) on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of parts of a crater where a cataract of lava flowed millions (if not billions) of years ago.

Edited Mars Reconnaissance Orbiter image of new craters (formed at the same time by a meteorite that split before impact) on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter PR image (from its Flickr photostream) of rough terrain.

Edited Mars Reconnaissance Orbiter image of frozen cataracts of lava on Mars in anaglyph format created by NASA.

Edited Mars Reconnaissance Orbiter image of banded ridges in Hellas on Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes and carbon dioxide frost and snow on Mars' north polar region.

Edited Mars Reconnaissance orbiter image of hills (with pretty colors) in Ganges Chasma. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a crater in Meridiani Planum with a nice, sandy plateau in it.

Edited Mars Reconnaissance Orbiter image of fresh (where fresh most likely means less than a billion years old) lava flows in Elysium Planitia. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of the image strip showing the small remnant of part of Mars' south pole ice cap. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of parts of a crater where a cataract of lava flowed millions (if not billions) of years ago. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes on Mars.

Edited Mars Reconnaissance Orbiter image of a crater in Meridiani Planum with a nice, sandy plateau in it. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes over rough terrain. I liked the colors, which is why I posted these.

Edited Mars Reconnaissance Orbiter image of sand dunes on Mars.

Edited Mars Reconnaissance Orbiter image of fans on Mars caused by erupting carbon dioxide as it warms up in the local spring. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of dark sand dunes on a rough surface on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes over rough terrain. I liked the colors, which is why I posted these. Full image (but reduced in size).

Mars Reconnaissance Orbiter image of a large sand dune on Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes over rough terrain. I liked the colors, which is why I posted these. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a context image for the small remnant of Mars' south pole ice cap.

Edited Mars Reconnaissance Orbiter image of the image strip showing the small remnant of part of Mars' south pole ice cap.

Edited Mars Reconnaissance Orbiter image of layered deposits (perhaps indicating an ancient lake) in Uzboi Vallis.

Edited Mars Reconnaissance Orbiter image of an uplift (with sand dunes) in or near Terby Crater.

Edited Mars Reconnaissance Orbiter image of new craters on a light-colored background on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of cinder cones without roots (which I suppose means they aren't very tall). Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a frozen cataract of lava on Mars.

Edited Mars Reconnaissance Orbiter image of layered deposits (perhaps indicating an ancient lake) in Uzboi Vallis. Color/processing variant.

La ilustración muestra al Cometa Siding Spring, y su sobrevuelo cercano de Marte. Y a las naves espaciales humanas puestas a salvo de la lluvia de meteoritos del viajero cósmico. Crédito de la imagen: NASA/JPL

El Cometa C/2013 A1 Siding Spring bañó con una lluvia de meteoritos la atmósfera de ...

notaspampeanas.com/site/cometa-bano-con-meteoritos-marte-...

(Very large) image from Mars Reconnaissance Orbiter of a colorful part of Mawrth Vallis on Mars. The IRB filters were used to highlight various minerals.

Edited Mars Reconnaissance Orbiter image of a crater in Terra Cimmeria with interesting gullies. (Lots of craters on Mars have gullies - there is no agreement, however, on how they were formed.) Context image for previous image.

Edited Mars Reconnaissance Orbiter image of a relatively colorful crater.

Edited Mars Reconnaissance Orbiter image of alluvial fans on Mars, most likely created by ancient (eg, billions of years ago) water flows.