Tag Archives: impacts

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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HiRISE: New impact site in southern mid-latitudes

Over 500 new impact events have been detected from before-and-after images, mostly from MRO’s Context Camera, with a HiRISE followup. Those new craters that expose shallow ice are of special interest, especially at latitudes where not previously detected, to better … Continue reading

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HiRISE: Is that an impact crater?

This image was acquired to take a closer look at a circular feature that might be an impact structure on the South Polar layered deposits. Measuring the sizes and frequency of impact craters provides a constraint on the age of … Continue reading

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Opportunity: Geologically fresh crater

Sol 4680, March 24, 2017. A relatively fresh crater from a small meteorite impact lies out on the sands of Meridiani, just west of the Endeavour Crater rim. (False color Pancam  reconstruction by Holger Isenberg.) For a larger version, click … Continue reading

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HiRISE: New crater on a dusty slope

This image shows a new impact site originally detected by the Context Camera onboard MRO. The crater is on a dusty slope, which also has several dark slope streaks due to dust avalanches. A previous impact at another place on … Continue reading

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