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The eastern margin of a rippled dune in Herschel Crater on Mars moved an average distance of three meters (about three yards) between March 3, 2007 and December 1, 2010, as seen by NASA's Mars Reconnaissance Orbiter.
Shifting Sand in Herschel Crater
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A rippled patch of sand in Becquerel Crater on Mars moved about two meters (about two yards) between November 24, 2006 and September 5, 2010, as observed in these images taken by NASA's Mars Reconnaissance Orbiter.
Blowing in the Martian Wind
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Impact cratering and erosion combine to reveal the composition of the Martian underground by exposing materials from the subsurface.
Clay Minerals in Craters and Escarpments on Mars (Figure 2)
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Impact cratering and erosion combine to reveal the composition of the Martian underground by exposing materials from the subsurface.
Clay Minerals in Craters and Escarpments on Mars (Figure 4)
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Impact cratering and erosion combine to reveal the composition of the Martian underground by exposing materials from the subsurface.
Clay Minerals in Craters and Escarpments on Mars (Figure 3)
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Impact cratering and erosion combine to reveal the composition of the Martian underground by exposing materials from the subsurface.
Clay Minerals in Craters and Escarpments on Mars (Figure 1)
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Impact cratering and erosion combine to reveal the composition of the Martian underground by exposing materials from the subsurface.
Clay Minerals in Craters and Escarpments on Mars
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This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today.
Warm-Season Flows on Slope in Horowitz Crater (Nine-Image Sequence)
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This back and forth comparison shows changes that occurred in a gully on a south-facing slope in middle southern latitudes of Mars.
Changes in a Gully in a Mars Crater (Two-Image Comparison)
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This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today.
Warm-Season Flows in Well-Preserved Crater in Terra Sirenum (Six-Image Sequence)
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This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today.
Warm-Season Flows on Steep Slope in Slope in Terra Cimmeria (Eight-Image Sequence)
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This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today.
Warm-Season Flows on Slope in Horowitz Crater (Eight-Image Sequence)
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This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today.
Dark Flows in Newton Crater Extending During Summer (Six-Image Sequence)
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This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today.
Warm-Season Flows on Slope in Newton Crater (Five-Image Sequence)
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This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today.
Warm-Season Flows on Slope in Newton Crater (Six-Image Sequence)
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This image shows warm-season flows on a north-facing slope in middle southern latitudes of Mars.
Site of Warm Season Flows in Mars Crater
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This image contrasts gullies and recurring warm-season slope flows appearing in the same crater, in the middle southern latitudes of Mars.
Gullies and Newly Identified Flow Features in Same Mars Crater
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This image contrasts gullies and recurring warm-season slope flows appearing in the same crater, in the middle southern latitudes of Mars.
Gullies and Newly Identified Flow Features in Same Mars Crater (Arrows)
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An image combining orbital imagery with 3-D modeling shows flows that appear in spring and summer on a slope inside Mars' Newton crater.
Oblique View of Warm Season Flows in Newton Crater
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Unfrozen brine in cryopegs and fracture networks provides habitats for the survival and growth of organisms both within and under frozen rocky materials on Earth and, by analogy, could provide habitats on Mars.
Plausible Martian Habitats
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This map of Mars shows relative locations of three types of findings related to salt or frozen water, plus a new type of finding that may be related to both salt and water.
Ice, Salt and Warm-Season Flows on Mars
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The Mars Color Imager (MARCI), shown here with a gloved hand for scale, is designed to produce a global map to help characterize daily, seasonal and year-to-year variations in Mars' climate, providing a daily weather report for Mars.
Mars Color Imager (MARCI) for Mars Reconnaissance Orbiter
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Planum Australe Region
Planum Australe Region
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Crater in Thaumasia Fossae
Crater in Thaumasia Fossae
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These images from orbit show an area near Mars' south pole where coalescing or elongated pits are interpreted as signs that an underlying deposit of frozen carbon dioxide, or "dry ice," has been shrinking by sublimation.
Pitting from Sublimation of Underlying Dry-Ice Layer
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