This image, acquired on January 2, 2014, by NASA's Mars Reconnaissance Orbiter, shows dune fields located among canyon wall slopes.
September 10, 2018
This image acquired on April 8, 2018 by NASA's Mars Reconnaissance Orbiter, shows the gullied western slopes of an unnamed crater (about 10 kilometers wide) in Acidalia Planitia.
September 4, 2018
This image, acquired on May 15, 2018, by NASA's Mars Reconnaissance Orbiter, shows relatively bright mounds scattered throughout darker and diverse surfaces in Chryse Planitia.
September 4, 2018
This image, acquired on May 13, 2018 by NASA's Mars Reconnaissance Orbiter, shows sand dunes scouring what appears to be a highly-cratered, old lava flow in the Tempe Terra region, located in the Northern Hemisphere.
August 12, 2018
This image from NASA's Mars Reconnaissance Orbiter shows Ganges Chasma in the northeast portion of Valles Marineris. Scattered hills on the canyon floor may be remnants of chaos terrain that formed from collapse of the canyon.
July 30, 2018
This image from NASA's Mars Reconnaissance Orbiter shows Roddy Crater on Mars, home to several large alluvial fans, which formed as water moved sediment from the mountainous crater rim and deposited it onto the flatter crater floor.
July 24, 2018
NASA's Mars Reconnaissance Orbiter observes several new dust avalanches on the slopes of ridges within the Olympus Mons Aureole.
July 24, 2018
Side-by-side movies shows how dust has enveloped the Red Planet, courtesy of the Mars Color Imager (MARCI) wide-angle camera onboard NASA's Mars Reconnaissance Orbiter (MRO).
July 19, 2018
This image from NASA's Mars Reconnaissance Orbiter shows Aram Chaos, an ancient impact crater that lies within in the Southern Highlands of Mars. Uplifted blocks are composed largely of the iron-oxide hematite and water-altered silicates.
July 9, 2018
This image from NASA’s Mars Reconnaissance Orbiter shows spider-like formations at the Martian South Pole. They form when heating from the springtime Sun causes carbon dioxide beneath the surface to change from solid to gas and erupt, leaving dust behind.
July 9, 2018
This colorful image acquired on May 21, 2018 by NASA's Mars Reconnaissance Orbiter shows clays within the Eridania basin region. A large lake may have once existed here.
July 9, 2018
Mars' north polar deposits comprise a thick stack of icy layers. Part of this image from NASA's Mars Reconnaissance Orbiter (MRO) has lingering seasonal frost, which serves to accentuate those layers.
June 25, 2018
NASA's Mars Reconnaissance Orbiter observed this image of an impact crater. The blue appearance is due to the intense blast of the impact moving around dust on the surface. That dust is usually light-toned and reddish in color compared to what is beneath.
June 25, 2018
This image from NASA's Mars Reconnaissance Orbiter shows many new ice blocks compared to earlier images in 2006. One of the most actively changing areas on Mars are the steep edges of the North Polar layered deposits.
June 25, 2018
This set of images from NASA's Mars Reconnaissance Orbiter shows a fierce dust storm is kicking up on Mars, with rovers on the surface indicated as icons.
June 13, 2018
