Tag Archives: High Resolution Imaging Science Experiment

HiRISE: Clays in the Eridania Basin

This colorful image shows clays within the Eridania basin region. Many scientists using orbital data have proposed that a large lake may have once existed here during the Late Noachian through Early Hesperian time periods, and then much of the … Continue reading

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HiRISE: Lava-coated craters

Lava-coated craters. The larger crater looks normal–dimpled depression with a protruding rim barely covered by lava which later deflated. The smaller depression looks deeper and steeper-sided, and the rim does not protrude, so it is probably below the level of … Continue reading

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HiRISE: Jamming with the ‘spiders’ from Mars

During winter at the South Pole of Mars, a carbon dioxide ice cap covers the region and as the sun returns in the spring, “spiders” begin to emerge from the landscape. But these aren’t actual spiders. We call it “araneiform … Continue reading

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HiRISE: The sand always gets through

The sand always gets through. There are also eroded layers here in Orson Welles Crater. Beautiful Mars series. [More at links]

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HiRISE: Uplifted blocks of light-toned layered deposits

Aram Chaos lies within a 280 kilometer-diameter ancient impact crater in the Southern Highlands of Mars. Uplifted blocks of light-toned layers, composed largely of the iron-oxide hematite and water-altered silicates, indicate that this crater once held a lake. Scientists suggest … Continue reading

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HiRISE: Fractures on Pavonis Mons

Fractures on Pavonis Mons. This observation was suggested by students at the Mars Academy in Brazil. Here is their original rationale: “This “stressed-out” region of the northeastern slopes of Pavonis Mons contains multiple sets of sub-parallel faults, with down-thrown blocks indicating tensional … Continue reading

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HiRISE: Cliffs and stratified features in central Arabia Terra

Cliffs and stratified features in central Arabia Terra. Sedimentary rock? Layered materials looked as if mantled by dust. The goal of this observation is to capture some of the variety of erosional expressions  and stratigraphy. Beautiful Mars series. [More at … Continue reading

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HiRISE: Figure 8 craters on Mars

Impact craters are very common on the surface of Mars as well as any other planetary body lacking a significant atmosphere (e.g., the Moon). In the absence of a thick atmosphere and active geologic processes, and if the surface is … Continue reading

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HiRISE: Fans in east Coprates Montes

Dark be the fans in east Coprates Montes. Beautiful Mars series. [More at links]

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HiRISE: Glacial tongue

Glacial tongue. Well, that’s a fine how-do-you-do! This re-image can help to detect for any changes in the ridges and boulder movement. Beautiful Mars series. [More at links]

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