Tag Archives: HiRISE Picture of the Day

HiRISE: Floor and north rim of Dokka Crater

Floor and north rim of Dokka Crater. Dokka Crater is 52-kilometers in diameter and located in the north polar region of Mars. Its interior is presumably a remnant of a former polar cap with larger extension, so it could provide … Continue reading

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HiRISE: McLaughlin Crater dunes

McLaughlin Crater dunes. This image is part of a seasonal monitoring campaign to detect changes and quantify migration rates of the dunes in McLaughlin Crater. McLaughlin is one of the deepest craters on Mars, and was named after Dean B. … Continue reading

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HiRISE: Dust devils dancing on dunes

Dust devils dancing on dunes. Dust devils make dark, diffuse scribble markings on the surface by kicking up dust, and are especially active in the summertime over dark surfaces, such as those with many deposits of sand-sized material. HiRISE Picture … Continue reading

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HiRISE: Massif beauty

Massif beauty. We have two simple objectives with this image: to fill in gaps of coverage of this area in Coprates Chasma and to look for colorful slopes of mafic materials. (“Mafic” refers to a silicate mineral or igneous rock … Continue reading

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HiRISE: Proctor Crater dune field

Proctor Crater dune field. The dune field here in Proctor Crater is about 35 x 65 kilometers in size, and was one of the first sand dune fields ever recognized on Mars based on Mariner 9 images. HiRISE Picture of … Continue reading

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HiRISE: Dunes within Arkhangelsky Crater

Dunes within Arkhangelsky Crater. Dark sand patches and dunes are likely to be active on the floor deposits of this 117-kilometer diameter impact crater. An additional goal is to look for changes from earlier HiRISE images. HiRISE Picture of the … Continue reading

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HiRISE: A fresh crater in periglacial terrain

A fresh crater in periglacial terrain. This appears to be a relatively fresh crater in what is called periglacial terrain. Could any changes in the surface be related to ice? (Periglacial refers to an area adjacent to a glacier or … Continue reading

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HiRISE: Springtime for Russell Crater

Springtime for Russell Crater. Russell Crater is another favorite of ours, not only for its beauty, but also for the information it provides us for any changes due to sublimation, when a solid state changes directly to a gaseous one. … Continue reading

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HiRISE: This far and no further!

This far and no further! The very top of this image shows the edge of ancient lava flow that went no further across the plain. It’s also a natural boundary in the reflectivity (albedo) of the surface. HiRISE Picture of … Continue reading

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HiRISE: Terraced trough near Ceraunius Fossae

A terraced trough near Ceraunius Fossae. This may be a source region of flow material that enclosed the adjacent raised ridges and continues on to the north. High resolution can help to determine if the terraced forms are due to … Continue reading

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