Tag Archives: University of Arizona

HiRISE: Window into the past

The layered sedimentary deposits inside the giant canyons of Mars have puzzled scientists for decades. These light toned deposits have fine, horizontal laminations that are unlike the rugged rim rock of the Valles Marineris. Various ideas for the origin of … Continue reading

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HiRISE: A highly disrupted crater

This 2.5-kilometer diameter crater has been significantly altered from the usual bowl-shaped appearance we associate with craters. Material has covered significant portions of the ejecta and filled in the crater. This fill material has since been subject to erosion—like boulders … Continue reading

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HiRISE: Fresh shallow valleys

Fresh shallow valleys. Beautiful Mars series.

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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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HiRISE: Pitted material in large crater

Pitted material in large crater north of Hellas Planitia. Beautiful Mars series.

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HiRISE: Gullies in Icaria Planum crater

A certain starkness. Beautiful Mars series.

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HiRISE: Tiny spiders off south polar layered deposits

Tiny spiders off south polar layered deposits. Beautiful Mars series.

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HiRISE: Candidate ExoMars landing site near Aram Dorsum

Candidate ExoMars landing site near Aram Dorsum. Beautiful Mars series.

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HiRISE: The Big Valley (Mars edition)

The Big Valley (Mars edition) — Libya Montes. Beautiful Mars series.

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HiRISE: Textures in Deuteronilus Mensae

This enhanced color image shows the surface of a lobate debris apron in the Deuteronilus Mensae region of Mars, on the boundary between the Northern plains and Southern lowlands. These lobe-shaped formations commonly emanate from mesas in this region and … Continue reading

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