Artist concept of Mars Reconnaissance Orbiter

Members of the Mars Reconnaissance Orbiter mission pose at NASA’s Jet Propulsion Laboratory, which manages the mission, on June 23, 2016.

Artist's concept of Mars Reconnaissance Orbiter near Mars.

Nili Fossae was once considered a potential landing spot for the Mars Science Laboratory, and has one of the largest, most diverse exposures of clay minerals.

Side-by-side movies shows how the 2018 global dust storm enveloped the Red Planet, courtesy of the Mars Color Imager (MARCI) camera onboard NASA's Mars Reconnaissance Orbiter (MRO). This global dus...

The arm and the remote sensing mast of the Mars rover Curiosity each carry science instruments and other tools for NASA's Mars Science Laboratory mission.

Sample Noachis Terra

This enhanced image shows the inside of a rimless pit about 180 meters (591 feet) in diameter, northwest of the mountain Ascraeus Mons in the northern hemisphere of Mars.

Diagonal striping on this map of a portion of Mars' Utopia Planitia region indicates the area where a large subsurface deposit rich in water ice was assessed using the Shallow Radar (SHARAD) instru...

Here is a view of Earth and its moon, as seen from Mars. It combines two images acquired on Nov. 20, 2016, by the HiRISE camera on NASA's Mars Reconnaissance Orbiter, with brightness adjusted separ...

Part of the canyon floor and wall rock in southwestern Melas Chasma on Mars meanders in a pattern resembling a dragon.

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

Deposits on the floor of Palos Crater

This image is located within Northern Sinus Meridiani, a region of ridged terrains and extensive stratigraphic layering.

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...

Eberswalde Crater contains layered rocks about 100-meters thick exposed in a a well-preserved delta.

This image from orbit covers an area about 460 meters (about 1,500 feet) across, in which carbonate minerals have been identified from spectrometer observations. Fractures and possible layers are v...

The yellow line on this map shows where NASA's Mars Rover Opportunity has driven from the place where it landed in January 2004 -- inside Eagle crater, at the upper left end of the track -- to a po...

Collapsing Volcano; Edge of Olympus Mons

The bright feature in this image might be the parachute from a 1971 Soviet Mars lander named Mars 3. The image was taken by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's...

Martian gullies as seen in the top image from HiRISE on NASA's Mars Reconnaissance Orbiter resemble gullies on Earth that are carved by liquid water. However, when they are observed with the additi...

This enhanced color image from NASA's Mars Reconnaissance Orbiter shows eroded bedrock on the floor of a large ancient crater.

Artist's concept of Mars Reconnaissance Orbiter

This image shows part of the floor of an impact crater on the northern rim of the giant Hellas Basin.

This image, taken with the High Resolution Imaging Science Experiment (HiRISE) camera, shows the transition between the "Murray Formation," in which layers are poorly expressed and difficult to tra...

Sand dunes often accumulate in the floors of craters. In this region of Lyot Crater, NASA's Mars Reconnaissance Orbiter (MRO) shows a field of classic barchan dunes on Jan. 24, 2018.