Artist concept of Mars Reconnaissance Orbiter

This global map of Mars was acquired on Aug. 2, 2012, by the Mars Color Imager instrument on NASA's Mars Reconnaissance Orbiter.

This HiRISE image shows a group of cones, shield-like features, and round mounds.

Download a PDF of the Mars Reconnaissance Orbiter Launch Press Kit.

NASA's Mars Reconnaissance Orbiter observes many slopes in the middle latitudes of Mars showing icy flows or glaciers. The region shown here, in the south-facing slope of a crater, is unusual becau...

This picture was taken during the Martian summer with only small patches of ice remaining at the surface; they show up as bright, somewhat blue, spots on slopes that provide some shading from the Sun.

This cliff is the site of the most frequent frost avalanches seen by HiRISE. These avalanches remind us, along with active sand dunes, dust devils, slope streaks and recurring slope lineae, that ...

More evidence of a dynamic Mars is revealed at the edge of a martian dune field.

Collapsing Volcano; Edge of Olympus Mons

The upper portion of this map is from an observation by the Context Camera on NASA's Mars Reconnaissance Orbiter of a field of dark sand dunes in the Nili Patera region of Mars.

Athabasca Valles is a large channel carved by giant outbursts of groundwater somewhere between 2 and 30 million years ago. These streamlined "islands" were carved by the massive floodwaters.

This observation shows a wrinkle ridge in Solis Planum, located in the Thaumasia region of Mars, a high-elevation volcanic plain located south of the Valles Marineris canyon system and east of the ...

Small impact craters usually have simple bowl shapes, but sometimes more complicated shapes can occur if the target is unusual.

The insert in this image is a simulation of what the Mars Reconnaissance Orbiter's optical navigation camera images of the Martian moons Phobos and Deimos will look like.

What is this enigmatic landform?

A Lockheed Martin-built Atlas 5 rocket, like the one pictured, will launch the Mars Reconnaissance Orbiter in August 2005 from Cape Canaveral Air Station, Florida.

Wrinkle Ridge in Solis Planum

Images of locations in Gale Crater taken from orbit around Mars reveal evidence of erosion in recent geological times and development of small scarps, or vertical surfaces.

Layers in the lower portion of two neighboring buttes within the Noctis Labyrinthus formation on Mars are visible in this image from the High Resolution Imaging Science Experiment (HiRISE) camera o...

In early 2017, after more than a decade of observing Mars, the Context Camera on NASA's Mars Reconnaissance Orbiter (MRO) surpassed 99 percent coverage of the entire planet. This mosaic shows that...

The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter captured winter images of NASA's Phoenix Mars Lander surrounded by dry-ice frost on Mars.

Artist's concept of Mars Reconnaissance Orbiter near Mars.

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...

A configuration interpreted as the United Kingdom's Beagle 2 Lander, with solar panels at least partially deployed, is indicated in this composite of two images from the High Resolution Imaging Sci...

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).

Well-Preserved Crater with Central Peak in Chryse Planitia