Tag Archives: sand

RSLs are flowing sand, not water?

Dark features previously proposed as evidence for significant liquid water flowing on Mars have now been identified as granular flows, where sand and dust move rather than liquid water, according to a new article published in Nature Geoscience by the … Continue reading

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Sublimation of water can levitate sediments for downslope movement

Scientists from The Open University (OU) have discovered a process that could explain the long-debated mystery of how land features on Mars are formed in the absence of significant amounts of water. Experiments carried out in the OU Mars Simulation … Continue reading

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HiRISE: Where does the sand come from?

The grains of sand that make up sand dunes on Earth and Mars have a hazardous existence because of the way that they travel. Wind-blown sand is lifted above the surface of each planet before crashing onto the ground and … Continue reading

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THEMIS: Dunes changing from little to big

THEMIS Image of the Day, August 8, 2017. This image shows part of the dune field just south of the large sand ridge – which is visible on the very top of the image. There is a huge range of … Continue reading

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THEMIS: Fingers of sand in Russell Crater

THEMIS Image of the Day, August 4, 2017. This image shows the western part of the dune field on the floor of Russell Crater. Russell Crater is located in Noachis Terra. A spectacular dune ridge and other dune forms on … Continue reading

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Curiosity update: Kicking up some sand

Sol 1748-52, July 7, 2017, update by MSL scientist Michael Battalio: Curiosity has intentionally scuffed a nearby sand ripple, which has gifted the team with an exceptional view of the interior of these small sand deposits. The majority of the … Continue reading

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Curiosity: Rolling over a ripple

Sol 1748, July 7, 2017.  Curiosity rolled one wheel across a sand ripple, as scientists sought to see what its interior structure might be (above). At right, the views from the front and rear Hazcams. (Click any image to enlarge … Continue reading

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Curiosity update: Bumping to a sand ripple

Sol 1748, July 6, 2017, update by MSL scientist Ken Herkenhoff: Another touch-and-go was strategically planned for today, and there is bedrock in the arm workspace, so the tactical science team selected a block named “Tupper Ledge” for contact science. … Continue reading

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HiRISE: Sandlot

Sandlot. Beautiful Mars series.

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HiRISE: Slide on down

Slide on down. Beautiful Mars series.

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