This map showing the location of some clay minerals in of a portion of the Mawrth Vallis region of Mars covers an area about 10 kilometers (6.2 mile) wide.
This map showing the location of some clay minerals in of a portion of the Mawrth Vallis region of Mars covers an area about 10 kilometers (6.2 mile) wide.
This three-dimensional image of a trough in the Nili Fossae region of Mars shows a type of minerals called phyllosilicates concentrated on the slopes of mesas and along canyon walls.
Two studies based on data from NASA's Mars Reconnaissance Orbiter have revealed that the Red Planet once hosted vast lakes and a variety of other wet environments that had the potential to support life.
New analysis of Mars' terrain using NASA spacecraft observations reveals what appears to be by far the largest impact crater ever found in the solar system.
The High Resolution Imaging Science Experiment in orbit around Mars has examined many possible landing sites for the 2009 Mars Science Laboratory rover, including the Nili Fossae area seen here.
› View This VideoThe Mars Reconnaissance Orbiter is providing unprecedented views as it studies the red planet.
› View This VideoNASA's Mars Reconnaissance Orbiter successfully placed itself into orbit at Mars on Mar. 10, 2006.
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