Tag Archives: impacts

HiRISE: Mojave Crater far-flung impact ejecta

Distal reaches of Mojave Crater impact ejecta. Beautiful Mars series.

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HiRISE: Layers on rim of southern impact crater

Swoop! – Layers on the rim of an impact crater in the southern region of Mars. 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: South polar pit or an impact crater?

It is late summer in the Southern hemisphere, so the Sun is low in the sky and subtle topography is accentuated in orbital images. We see many shallow pits in the bright residual cap of carbon dioxide ice (also called … Continue reading

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Tornado-like winds from impacts scoured surface

Plumes of vapor generated by ancient impacts on Mars created tornado-like winds possibly swirling at more than 500 miles per hour, which explain mysterious streaks seen near large impact craters on the Martian surface. In looking at NASA images of … Continue reading

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THEMIS: Rough rim on Horowitz Crater

THEMIS Image of the Day, May 4, 2017. Today’s false color image shows part of the northern rim of Horowitz Crater, which is located in Terra Cimmeria. The THEMIS VIS camera contains 5 filters. The data from different filters can … Continue reading

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HiRISE: Aging with impacts

Mamers Valles is a long (approximately 1000 kilometers) sinuous canyon beginning in Arabia Terra and ending in the Northern lowlands of Deuteronilus Mensae. This image features the southern facing slope of the canyon wall. The northern half (top) has a … Continue reading

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THEMIS: Aonia Terra crater ejecta in false color

THEMIS Image of the Day, April 26, 2017. Today’s false color image shows several small craters in Aonia Terra. The false colors help show differences in the patterns of debris ejected in the impacts. The THEMIS VIS camera contains 5 … Continue reading

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Mars’ big-impact history had a post-accretion lull

From the earliest days of our solar system’s history, collisions between astronomical objects have shaped the planets and changed the course of their evolution. Studying the early bombardment history of Mars, scientists at Southwest Research Institute (SwRI) and the University … Continue reading

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HRSC: Crater triplets

At first glance this scene may seem nothing out of the ordinary, but the large elongated crater marks the imprint of an impacting body that may have broken into three before it hit Mars. The images were acquired by ESA’s … Continue reading

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