Artist concept of Glaciers on Mars

This image shows the landing site of NASA's Curiosity rover and destinations scientists want to investigate.

This annotated image from NASA's Mars Reconnaissance Orbiter shows a bright feature interpreted as the United Kingdom's Beagle 2 Lander, which was never heard from after its expected Dec. 25, 2003,...

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

This view of layered rocks on the floor of McLaughlin Crater shows sedimentary rocks that contain spectroscopic evidence for minerals formed through interaction with water.

NASA's Mars Reconnaissance Orbiter passes above a portion of the planet called Nilosyrtis Mensae in this artist's concept illustration.

This image acquired on December 8, 2018 by NASAs Mars Reconnaissance Orbiter, shows erosion of the surface revealing several shades of light toned layers, likely sedimentary deposits.

This image shows a cross-section of a portion of the north polar ice cap of Mars, derived from data acquired by the Mars Reconnaissance Orbiter's Shallow Radar (SHARAD), one of six instruments on t...

Recurring slope lineae (RSL) are active flows on warm Martian slopes that might be caused by seeping water.

Polygons are of great interest because they often indicate the presence of shallow ice or of desiccation such as in a mud flat. However, nature sometimes seems too clever for us.

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.

This animation blinks between two images of NASA's Mars Phoenix Lander hardware around the mission's 2008 landing site on far-northern Mars.  By late 2017, dust obscures much of what was visible tw...

NASA’s InSight has been busy. After landing on the Red Planet, the mission sent home pictures and sound, then placed its first instrument on the planet's surface. Plus, find out what the Curiosity ...

This area of Mars is shaped by lava flows from volcanic eruptions.

This pair of images covers one of many sites on Mars where researchers use the HiRISE camera on NASA's Mars Reconnaissance Orbiter to study changes in gullies on slopes. Changes such as the ones v...

This view taken from orbit around Mars shows the sand dune that will be the first to be visited by NASA's Curiosity Mars Rover along its route to higher layers of Mount Sharp.

This anaglyph from HiRISE shows erosional features formed by seasonal frost near the south pole of Mars.

This image covers part of the floor of a large ancient impact crater, near the western rim.

These two frames were taken of the same place on Mars by the same camera before (left) and after some images from the camera began showing unexpected blur. The images are from the HiRISE camera on ...

Artist concept of Mars Reconnaissance Orbiter during aerobraking.

This artist's animation shows how NASA's Curiosity rover will communicate with Earth via two of NASA's Mars orbiters, Mars Reconnaissance Orbiter and Odyssey. As the rover descends to the surface o...

On Nov. 1, 2016, the HiRISE camera on NASA's Mars Reconnaissance Orbiter observed the impact site of Europe's Schiaparelli test lander, gaining the first color view of the site since the lander's O...

This image shows part of Ladon Vallis that is located within Ladon basin.

This is an image of a central pit of an impact crater in the Martian ancient highlands.

Animation of a skinny "dust devil" on the dust-covered Amazonis Planitia region of northern Mars. (No audio)

This stereo view shows an area on Mars where narrow rock ridges intersect at angles forming corners of polygons. It combines two observations from the HiRISE camera on NASA's Mars Reconnaissance Or...