Artist concept of Glaciers on Mars

This near-global map was captured by NASA’s Mars Reconnaissance Orbiter using its Compact Reconnaissance Imaging Spectrometer for Mars, or CRISM. The yellow square indicates the Nili Fossae region ...

This graphic shows the ongoing contributions of NASA’s rovers and orbiters during a Martian dust storm that began on May 30, 2018.

Two parallel tracks left by the wheels of NASA's Curiosity Mars rover cross rugged ground in this portion of a Dec. 11, 2013, observation by the High Resolution Imaging Science Experiment (HiRISE) ...

This pair of before (left) and after (right) images from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter documents formation of a new channel on...

This artist's concept of the Mars Reconnaissance Orbiter features the spacecraft's main bus facing down, toward the red planet.

This map shows the route driven by NASA's Curiosity Mars rover from the location where it landed in August 2012 to its location in mid-November 2015, approaching examples of dunes in the "Bagnold D...

MRO took this image of layered, sedimentary rocks on the floor of an impact crater north of Eberswalde Crater. Billions of years ago there may have been a lake in this crater.

This scene shows dark sand dunes marching over the ridges created by an alluvial (water-deposited) fan in an impact crater.

This image shows a portion of the central mound in the impact crater Gale that is of interest to scientists because it is composed of light-toned layered deposits. 

This image shows a lava channel, which lies just to the east of the largest volcano in the solar system: Olympus Mons.

The Mars Color Imager test view looks northward and includes the large Argyre Basin in Mars' southern hemisphere.

This map shows the footprints of images taken by the HiRISE camera on NASA's Mars Reconnaissance Orbiter as part of advance analysis of the area where NASA's InSight mission will land in 2018. The ...

NASA's Curiosity rover and its parachute were spotted by NASA's Mars Reconnaissance Orbiter as Curiosity descended to the surface on Aug. 5 PDT (Aug. 6 EDT).

Five decades of successful NASA missions to the Red Planet, 1965-2015.

Shown in this image from NASA's Mars Reconnaissance Orbiter are fan-shaped deposits emerging from regions of steep topography called alluvial fans. Alluvial fans on Mars are thought to be ancient a...

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 N...

With its cracked, blistery appearance, this mound near the center of a very large, over 5-kilometer diameter mid-latitude crater poses an interesting question: how did this form?

Phobos in Stereo

The Cerberus Fossae are a group of troughs in the Cerberus region of Mars that run roughly parallel to one another. They formed due to extension of the crust in the region. Some of the troughs, suc...

This HiRISE image shows a portion of interior layered deposits (ILD) in Juventae Chasma. Juventae Chasma is a large depression near the equatorial canyon system Valles Marineris.

As on the Earth, many processes can move material down a Martian slope. This graphic compares seven different types of features observed on Mars that appear to result from material flowing or slidi...

The Electris region of Mars contains some interesting features, such as the raised-relief blocks of material visible in this image.

Two 2001 images from NASA's Mars Global Surveyor orbiter show a dramatic change in the planet's appearance during a dust storm.

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.

A regional dust storm visible in the southern hemisphere of Mars in this nearly global mosaic of observations made by the Mars Color Imager on NASA's Mars Reconnaissance Orbiter on Nov. 25, 2012.