This image provides higher-resolution views of a site where another observation (PIA10247) indicates the presence of chloride salt deposits.
March 20, 2008
Mawrth Vallis has a rich mineral diversity, including clay minerals that formed by the chemical alteration of rocks or loose "regolith" (soil) by water.
March 12, 2008
The High Resolution Imaging Science Experiment (HiRISE) camera would make a great backyard telescope for viewing Mars, and we can also use it at Mars to view other planets. This is an image of Earth and the moon, acquired on October 3, 2007, by the HiRISE camera on NASA's Mars Reconnaissance Orbiter.
March 3, 2008
Caught in Action: This image shows avalanches on North Polar Scarps.
March 3, 2008
This image shows dunes near the north pole of Mars. The north pole is surrounded by a vast "sea" of basaltic sand dunes, and the dunes imaged here are similar to barchan dunes that are commonly found in desert regions on Earth.
February 27, 2008
This image shows part of the surface of Chryse Planitia, near the mouth of several of the giant outflow channels carved by massive floods. At this location the channel is much too large to be seen within a HiRISE image, and this shows an area of level plains near the mouth.
December 30, 2007
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 Tharsis volcanic complex. Solis Planum contains some of the most distinct and well studied arrays of wrinkle ridges on Mars.
December 21, 2007
These two images taken by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) show Mars' two small moons, Phobos and Deimos, as seen from the Mars Reconnaissance Orbiter's low orbit around Mars.
November 27, 2007
This close-up image of a dust storm on Mars was acquired by the Mars Color Imager instrument on NASA's Mars Reconnaissance Orbiter on Nov. 7, 2007
November 7, 2007
A portion of a trough in the Nili Fossae region of Mars is shown in enhanced color in this image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.
October 10, 2007
Dry ice causes "Swiss Cheese" terrain on Mars.
August 30, 2007
In Aureum Chaos, the OMEGA experiment on Mars Express indicated the presence of phyllosilicates (clay minerals) which have been detected in a variety of bright outcrops and scarps. The subimage shows such an outcrop in a chaotic terrain region. At the highest resolution, layering can be seen. The image will be used to assess at what stage in Mars's history these clays minerals were formed and how.
August 1, 2007
This HiRISE image shows fractured mounds on the southern edge of Elysium Planitia.
May 23, 2007
This HiRISE image shows a crater approximately 11 km (7 miles) in diameter, located in Acidalia Planitia, part of the Northern Plains. Several features in and around this crater are suggestive of fluids and ice at and near the surface.
May 9, 2007
Ring and Cone Structures and Platy-Ridged Terrain in Amazonis Planitia
May 1, 2007