Artist concept of Glaciers on Mars

This image acquired on August 20, 2018 by NASAs Mars Reconnaissance Orbiter, shows remnants of a deposit, composed of dry ice layered together with dust and water ice, that form the south polar res...

A newly found, buried deposit of frozen carbon dioxide -- dry ice -- near the south pole of Mars contains about 30 times more carbon dioxide than previously estimated to be frozen near the pole.

This rainbow-colored map shows underground water ice on Mars. Cool colors are closer to the surface than warm colors; black zones indicate areas where a spacecraft would sink into fine dust; the ou...

Phobos from 6,800 Kilometers

The movie you're watching here is a sequence of 3 HiRISE images that were taken of an object that might be the Beagle 2 lander in the Isidis Planitia.

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).

This view shows the ground covered in the first image of Mars taken by the High Resolution Imaging Science Experiment camera (HiRISE) on NASA's Mars Reconnaissance Orbiter

This image from NASA's Mars Reconnaissance Orbiter is a close-up of a trough, along with channels draining into the depression. On the floor of the trough is some grooved material typically seen in...

Snow falls and ice and frost form on Mars, too. NASA's spacecraft on and orbiting the Red Planet reveal the similarities to and differences from how we experience winter on Earth.  

Several types of downhill flow features have been observed on Mars. This image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter is an exampl...

This large outflow channel shows many characteristic signs that massive amounts of water have flowed through this area, including the teardrop and streamlined islands.

This set of images shows what might be hardware from the Soviet Union's 1971 Mars 3 lander, seen in a pair of images from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Ma...

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

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 t...

This map shows five locations where fresh impact cratering has excavated water ice from just beneath the surface of Mars (sites 1 through 5) and the Viking Lander 2 landing site (VL2), in the conte...

This pit crater was created by an empty lava tube in Mars’ Arsia Mons region. The image was captured by NASA’s Mars Reconnaissance Orbiter on Aug. 16, 2020.

This annotated image shows where features seen in an observation by NASA's Mars Reconnaissance Orbiter have been interpreted as hardware from the Dec. 25, 2003, arrival at Mars of the United Kingdo...

A small channel cuts across the floor of a gigantic 1100-mile (1780-kilometer)-long set of flood-carved channels in a region on Mars called "Kasei Valles."

This image shows blocks of bright, layered rock embedded in darker material that are thought to have been deposited by a giant flood that occurred when Uzboi Valles breached the rim of Holden Crater.

This image acquired on December 11, 2018 by NASAs Mars Reconnaissance Orbiter, shows a surface texture of interconnected ridges and troughs, referred to as brain terrain, found throughout the mid-l...

This map traces where NASA's Mars rover Curiosity drove between landing at a site subsequently named "Bradbury Landing," and the position reached during the mission's 130th Martian day, or sol, (De...

This image shows a graben (a trough formed when the ground drops between two parallel faults) and a lava flow in the Tharsis volcanic province of Mars. North is up.

How can you communicate with Mars spacecraft when the Sun is in the way? Learn more about 'solar conjunction' in this 60-second video.

NASA’s Mars Reconnaissance Orbiter captured this image of a meteoroid impact that was first detected by the agency’s InSight lander using its seismometer. This crater was formed on Aug. 30, 2021.

This image shows the topography, with shading added, around the area where NASA's Curiosity rover landed on Aug. 5 PDT (Aug. 6 EDT).