Opportunity's Northward View of 'Wdowiak Ridge' (False Color)
This north-looking vista from NASA's Mars Rover Opportunity shows 'Wdowiak Ridge,' from left foreground to center. This version is presented in false color, which enhances visibility of the rover's wheel tracks at right.
Perennial Frost in a Crater on the Northern Plains
Most surface ice on Mars is temporary. The polar layered deposits are thick stacks of permanent water ice at each pole, and the South Polar residual cap may be a permanent (although dynamic) layer of carbon dioxide ice as seen by NASA's Mars Reconnaissanc
A Collection of Landforms in Eastern Elysium Planitia
In the northern section of this from image NASA's Mars Reconnaissance Orbiter, we see flat terrain that is probably an ancient lava field. These dust avalanches are common in dust-covered regions on Mars.
The objective of this observation from NASA's Mars Reconnaissance Orbiter is to examine a light-toned deposit in a region of what is called 'chaotic terrain' at the base of the Valles Marineris canyon system.
This image from NASA's 2001 Mars Odyssey spacecraft shows a region near Memnonia Sulci, which has been eroded by the wind to form linear ridges called yardangs. The two prominent directions of wind are recorded by the two directions of the ridges.
View of Comet Siding Spring from Southern Hemisphere (Artist's Concept)
Comet Siding Spring will have a close approach to Mars on Oct. 19, 2014. This artist's concept shows people in the Southern Hemisphere where to look for Mars in the night sky. Mars and the comet may be visible with binoculars.
Mars Orbiters 'Duck and Cover' for Comet Siding Spring Flyby (Artist's Concept)
This artist's concept shows NASA's Mars orbiters lining up behind the Red Planet for their 'duck and cover' maneuver to shield them from comet dust that may result from the close flyby of comet Siding Spring (C/2013 A1) on Oct. 19, 2014.
While yesterday's image showed a texture of oval depressions (swiss cheese), this image from NASA's 2001 Mars Odyssey spacecraft shows a linear surface texture of the south polar cap. This texture is described as looking like a thumbprint.
This observation from NASA's Mars Reconnaissance Orbiter shows both dome and barchan dunes in a small sand dune field on the floor of Newton Crater, an approximately 300 kilometer (130 mile) wide crater in the Southern hemisphere of Mars.
Continual Dune and Ripple Migration in Nili Patera
Nili Patera is a region on Mars in which dunes and ripples are moving rapidly. HiRISE continues to monitor this area every couple of months to see changes over seasonal and annual time scales as seen by NASA's Mars Reconnaissance Orbiter.