Tag Archives: MRO

HiRISE: Crater on a crater wall

It’s not that common to see craters on steep hills, partly because rocks falling downhill can quickly erase such craters. Here, however, a small impact occurred on the sloping wall of a larger crater and is well-preserved. Dark, blocky ejecta … Continue reading

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HiRISE: Monitoring sand sheets and dunes

This crater features sand dunes and sand sheets on its floor. What are sand sheets? Snow fall on Earth is a good example of sand sheets: when it snows, the ground gets blanketed with up to a few meters of … Continue reading

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HiRISE: Sandlot

Sandlot. Beautiful Mars series.

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HiRISE: Small, fresh, and martian

Small, fresh, and martian – By “fresh,” (and sometimes “recent”), we are talking in geological terms only. Beautiful Mars series.

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HiRISE: Dark sediments in the Medusae Fossae Formation

Dark sediments in the Medusae Fossae Formation. Beautiful Mars series.

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MARCI weather report, May 29-June 4, 2017

Numerous local-scale dust storms danced across the southern mid-to-high latitudes of Mars this past week. During that time, dust storms that developed along the receding north polar ice cap were spotted over the plains of Acidalia, Arcadia, and Utopia. The … Continue reading

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HiRISE: Channel near Hale Crater

Channel near Hale Crater. Beautiful Mars series.

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HiRISE: On a field of sublimation

On a field of sublimation – Sublimation is a process where a solid directly turns into a gaseous state. Beautiful Mars series.

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HiRISE: Gullies and craters and dunes, oh my!

This unnamed, approximately 30-kilometer diameter crater, formed in the Southern highlands of Mars. Our image shows regions of geologic diversity within, making this an interesting spot for scientists to study how different Martian processes interact with each other. Gullies, or … Continue reading

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HiRISE: Slide on down

Slide on down. Beautiful Mars series.

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