HiRISE Views Snowy Dunes on Mars
This newly released HiRISE image shows snowy dunes on the surface of Mars. It was spring in the Northern hemisphere when this image was taken…
Mars Reconnaissance Orbiter News
NASA’s Mars Reconnaissance Orbiter Views a Well-Preserved Landslide
This Mars Reconnaissance Orbiter image shows a well-preserved landslide scarp and rocky deposit off the edge of a streamlined mesa in Simud Valles, a giant…
New HiRISE Image – Colorful Impact Ejecta from Hargraves Crater
NASA’s Mars Reconnaissance Orbiter views the colorful impact ejecta from the collision that created Hargraves Crater. The impact ejecta is a rich mix of rock…
New MRO Image Examines Martian Gullies
This newly released image from NASA’s Mars Reconnaissance Orbiter views gullies on the surface of Mars. Gullies eroded into the steep inner slope of an…
NASA’s Mars Reconnaissance Orbiter Captures a Winter’s View of a Gullied Crater
This newly released Mars Reconnaissance Orbiter image shows the location with the most impressive known gully activity in Mars’ northern hemisphere. Gullies are active in…
HiRISE Views Secondary Craters in Bas Relief
This new image comes from NASA’s Mars Reconnaissance Orbiter, revealing a region of Mars sprayed with secondary craters from 10-kilometer (6-mile) Zunil Crater to the…
NASA’s Mars Reconnaissance Orbiter Views Lakebeds in Holden Crater
The high resolution imaging science experiment (HiRISE) on the Mars Orbiter gives astronomers a view of the sediment deposits leftover from the lakes that once…
NASA’s HiRISE Views Clinoforms in Melas Chasma
This newly released image from the high resolution imaging science experiment on NASA’s Mars Reconnaissance Orbiter gives astronomers a view of the layered deposits in…
New HiRISE Image Views a Hill in the South Polar Region of Mars
This newly released image from the high resolution imaging science experiment (HiRISE) on NASA’s Mars Reconnaissance Orbiter provides astronomers with a closer look at the…
NASA’s Mars Reconnaissance Orbiter Tracks Back-to-Back Dust Storms
NASA’s Mars Reconnaissance Orbiter views back-to-back regional dust storms swelling on Mars. Images from the orbiter’s wide-angle Mars Color Imager (MARCI) show each storm growing…
Astronomers Show Similar-Looking Ridges on Mars Have Diverse Origins
A new study on polygon-forming ridges on Mars examines the Medusae Fossae region straddling the planet’s equator and similar-looking networks in other regions of the…
Mars Reconnaissance Orbiter Views Wind Carved Rock on Mars
This newly released NASA image shows wind carved rock on the surface of Mars. The distinctively fluted surface and elongated hills in this image in…
Mars Reconnaissance Orbiter Views a Streamlined Form in Lethe Vallis, Mars
This newly released image from NASA’s Mars Reconnaissance Orbiter shows a portion of Lethe Vallis, an outflow channel that also transported lava. This image was…
Mars Orbiter Shows Gullies on Mars Not Likely Formed by Liquid Water
Using data from NASA’s Mars Reconnaissance Orbiter, astronomers show that gullies on modern Mars are likely not being formed by flowing liquid water. This new…
Mars Reconnaissance Orbiter Reveals Frosted Dunes on Mars
NASA’s Mars Reconnaissance Orbiter captured this image of sand dunes on Mars. Sand dunes cover much of this terrain, which has large boulders lying on…
Mars Reconnaissance Orbiter Reveals Clues about Volcanoes Under Ice on Ancient Mars
New evidence from NASA’s Mars Reconnaissance Orbiter suggests that volcanoes erupted beneath an ice sheet on Mars billions of years ago. The research about these…
NASA Spacecraft Map Gravity on Mars, Give Best View Yet Inside Mars
Scientists have used slight orbital fluctuations to map the gravity field of Mars, providing fresh insights into its crustal thickness, deep interior, and seasonal variations…
A Look Back at Ten Years of Discoveries by the Mars Reconnaissance Orbiter
The short video below shows images from the Mars Reconnaissance Orbiter’s past decade of service at the Red Planet, revealing scientific discoveries and magnificent views…