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This map shows the thickness of the north polar layered deposits on Mars as measured by the Shallow Radar instrument on NASA's Mars Reconnaissance Orbiter.
How Thick is the North Polar Ice Cap on Mars?
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Eridania Basin Light-Toned Outcrops
Eridania Basin Light-Toned Outcrops
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Phoenix Landing Area Viewed by Mars Color Imager
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Sample Noachis Terra
Sample Noachis Terra
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Phobos in Stereo
'Marsshine' on Shadowed Part of Phobos
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'Marsshine' on Shadowed Part of Phobos
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'Marsshine' on Shadowed Part of Phobos
Phobos from 5,800 Kilometers
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NASA Spacecraft Images Mars Moon in Color and in 3D
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Phobos from 6,800 Kilometers (Color)
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NASA Spacecraft Images Mars Moon in Color and in 3D
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Phobos from 5,800 Kilometers
Phobos from 6,800 Kilometers
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Phobos from 6,800 Kilometers
Phobos from 5,800 Kilometers (Color)
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Caught in Action: This image shows avalanches on North Polar Scarps.
Caught in Action: Avalanches on North Polar Scarps
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Chloride Salt Deposit in Southern Highlands of Mars
Bright Exposures of Chloride Salt on Southern Mars
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Bright Exposures of Chloride Salt on Southern Mars
Bright Exposures of Chloride Salt on Southern Mars
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NASA's Mars Exploration Rover Spirit has this view northward from the position at the north edge of the "Home Plate" plateau where the rover will spend its third Martian winter.
View from Spirit's Overwintering Position (False Color)
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During four months prior to the fourth anniversary of its landing on Mars, Opportunity examined rocks inside an alcove called "Duck Bay" in the western portion of Victoria Crater.
'Lyell' Panorama inside Victoria Crater
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Dust-Devil Tracks in Southern Schiaparelli Basin
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NASA's twin Mars Exploration Rovers got smarter as they got older. This view from Opportunity shows the tracks left by a drive executed with more onboard autonomy than has been used on any other drive by a Mars rover.
D-Star Panorama by Opportunity
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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.

Wrinkle ridges are long, winding topographic highs and are often characterized by a broad arch topped with a crenulated ridge. These features have been identified on many other planetary bodies such as the Moon, Mercury, and Venus. On Mars, they are many tens to hundreds of kilometers long, tens of kilometers wide, and have a relief of a few hundred meters. Wrinkle ridges are most commonly believed to form from horizontal compression or shortening of the crust due to faulting and are often located in volcanic plains. They commonly have asymmetrical cross sectional profiles and an offset in elevation on either side of the ridge. Large dunes are also visible bordering the wrinkle ridge.

The reddish colors seen in this image most likely indicate the presence of dust (or indurated dust) and the darker, bluish colors most likely indicate the presence of larger rocks and boulders on the wrinkle ridge.
Wrinkle Ridge in Solis Planum
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Global View of Candor Chasm Study Location
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Spectrometer on NASA Orbiter Maps Minerals at Possible Landing Sites
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Color Image of Nili Fossae Trough, a Candidate MSL Landing Site
Color Image of Layers in Holden Crater, a Candidate MSL Landing Site
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The team developing NASA's Mars Science Laboratory calls this test rover "Scarecrow" because the vehicle does not include a computer brain. Mobility engineers use this test rover to evaluate mobility and suspension performance.
"Scarecrow"
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Onlookers watch as Scarecrow, a mobility-testing model for NASA's Mars Science Laboratory, easily conquers boulders in the Mars Yard testing area at NASA's Jet Propulsion Laboratory.
Shutterbugs Shoot "Scarecrow"
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