Tag Archives: HiRISE

HiRISE: Dunes of the Southern Highlands

Sand dunes are scattered across Mars and one of the larger populations exists in the Southern hemisphere, just west of the Hellas impact basin. The Hellespontus region features numerous collections of dark, dune formations that collect both within depressions such … Continue reading

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HiRISE: Ridge and mesa in Utopia Planitia

Ridge and mesa in Utopia Planitia. Beautiful Mars series.

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HiRISE: To great depths

Hellas is an ancient impact structure and is the deepest and broadest enclosed basin on Mars. It measures about 2,300 kilometers across and the floor of the basin, Hellas Planitia, contains the lowest elevations on Mars. The Hellas region can … Continue reading

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HiRISE: Hanging valleys in Dao Vallis

Hanging valleys in Dao Vallis. Beautiful Mars series.

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HiRISE: Gullies in winter shadow

This is an odd-looking image. It shows gullies during the winter while entirely in the shadow of the crater wall. Illumination comes only from the winter skylight. We acquire such images because gullies on Mars actively form in the winter … Continue reading

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HiRISE: The hills are colorful in Juventae Chasma

There are many hills about 1 kilometer high in Juventae Chasma, which is located north of the main Valles Marineris canyon system. The floor of the canyon is covered by a sea of sand, but the hills rise above the … Continue reading

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HiRISE: Layered deposits in Uzboi Vallis

Layered deposits in Uzboi Vallis sometimes occur in alcoves along the valley and/or below where tributaries enter it. These deposits may record deposition into a large lake that once filled Uzboi Vallis when it was temporarily dammed at its northern … Continue reading

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HiRISE: Surface textures in Sinus Meridiani

Surface textures in Sinus Meridiani. Beautiful Mars series.

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HiRISE: A closer look at Holden Crater

Holden Crater in southern Margaritifer Terra displays a series of finely layered deposits on its floor (white and light purple in an enhanced color image). The layered deposits are especially well exposed in the southwestern section of the crater where … Continue reading

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HiRISE: Fans and crater floor deposits southeast of Vinogradov Crater

This white, purple, and pink surface is located on the floor of an impact crater on the southeast rim of the larger Vinogradov Crater in southern Margaritifer Terra. The surface consists of what is left of a series of thin … Continue reading

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