Tag Archives: radial ejecta

THEMIS: Radial crater ejecta in Utopia

THEMIS Image of the Day, July 9, 2019. Today’s VIS image shows part of an unnamed crater in Utopia Planitia. The ejecta surrounding the crater rim shows both layering and radial grooves. These features formed during the impact event. Explore … Continue reading

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THEMIS: Big impacts and little in Terra Cimmeria

THEMIS Image of the Day, March 13, 2019. This VIS image contains three craters. There is a quarter of the largest crater in the top half of the image, half of a smaller crater at the very top, and the … Continue reading

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THEMIS: Blast scour at Bonestell Crater

THEMIS Image of the Day, April 17, 2018. Bonestell Crater is a relatively young crater located in Acidalia Planitia. The grooved surface of the ejecta blanket is evident in this VIS image. The grooves were likely eroded by the outward … Continue reading

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HiRISE: Unlocking an impact crater’s clues

Mars is a dynamic planet. HiRISE has witnessed many surface changes over the past ten years, including hundreds of new craters formed by ongoing impacts. Most of these impacts are likely caused by asteroids that have strayed into collision courses … Continue reading

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THEMIS: Young crater and wide-flung ejecta

THEMIS Image of the Day, January 31, 2017. Today’s VIS image shows two craters in Terra Cimmeria just north of Kepler Crater. The small crater in the middle of the image is a relatively new crater. The interior rim has … Continue reading

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THEMIS: Lonar Crater

THEMIS Image of the Day, February 11, 2016. This VIS image shows Lonar Crater. This is a fairly pristine crater, with a steep slope on the interior of the rim and little to no deposition of material on the floor. … Continue reading

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THEMIS: Concentric rims

THEMIS Image of the Day, January 19, 2016. This VIS image shows an unnamed crater near Acheron Fossae. The structure of this crater includes a central pit and several concentric rims. Radial grooves can be seen on the ejecta blanket … Continue reading

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