Artist concept of Glaciers on Mars

The long, sinuous raised ridges on this fan of material are thought to be inverted stream channels. These ridges may have been low-lying streambeds that hardened and then turned into ridges when th...

This image acquired on December 13, 2020 by NASAs Mars Reconnaissance Orbiter, shows blobby features in the polar cap that are due to the sun sublimating away the carbon dioxide into these round pa...

This graphic maps locations of the sites where NASA's Curiosity Mars rover collected its first 19 rock or soil samples for laboratory analysis inside the vehicle. It also presents images of the dri...

This graph shows a spectrum recorded by the Chemistry and Camera instrument (ChemCam) in NASA's Curiosity Mars rover.

Impact cratering and erosion combine to reveal the composition of the Martian underground by exposing materials from the subsurface.

A comparison of two radargrams from the SHARAD instrument on NASA's Mars Reconnaissance Orbiter shows effects on the Martian ionosphere from the close passage of a comet.

The Mars Reconnaissance Orbiter’s Context Camera, which captured the 110,000 images that make up the interactive global mosaic, is especially useful for spotting impact craters like those seen here.

This animation demonstrates the salty ponds and streams that scientists think may have been left behind as Gale Crater dried out over time. The bottom of the image is the floor of Gale Crater, with...

Impact cratering and erosion combine to reveal the composition of the Martian underground by exposing materials from the subsurface.

Shalbatana Vallis is a large channel with steep walls and a flat floor that may have formed by water draining from nearby Ganges Chasma. Here a section of the wall collapsed and produced a landslid...

The South Polar residual cap (the part that lasts through the summer) is composed of carbon dioxide ice.

About 1000 Viking Orbiter red- and violet-filter images have been processed to provide global color coverage of Mars at a scale of 1 km/pixel.

This "ring trough" or eroded pit crater, is located in the rugged southern highland terrain known as Noachis Terra. The HiRISE image shows the layered, boulder-rich wall rock facing to the northeas...

The Mars Color Imager (MARCI), shown here with a gloved hand for scale, is designed to produce a global map to help characterize daily, seasonal and year-to-year variations in Mars' climate, provid...

This nearly global mosaic of observations made by the Mars Color Imager on NASA's Mars Reconnaissance Orbiter on Nov. 18, 2012, shows a dust storm in Mars' southern hemisphere.

This image contrasts gullies and recurring warm-season slope flows appearing in the same crater, in the middle southern latitudes of Mars.

What is this enigmatic landform?

Terrain in Vastitas Borealis Region.

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 December 2015, at examples of the Bagnold Dunes.

Artist rendering of commercial Mars satellites providing communications back to Earth.

Image of Hesperia Planum from the HiRISE camera on Mars Reconnaissance Orbiter.

This sequence of images shows a blast zone where the sky crane from NASA's Curiosity rover mission hit the ground after setting the rover down in August 2012, and how that dark scar's appearance ch...

The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter caught this view of NASA's Mars Exploration Rover Opportunity on Feb. 14, 2014.

Mars Reconnaissance Orbiter Project Manager Jim Graf hugs Jet Propulsion Laboratory Director Dr. Charles Elachi after a successful orbit insertion on March 10, 2006.

Stages in the seasonal disappearance of surface ice from the ground around the Phoenix Mars Lander are visible in these images taken on Feb. 8, 2010, (left) and Feb. 25, 2010, during springtime on ...