Tag Archives: impact craters

THEMIS: Not quite round

THEMIS Image of the Day, July 23, 2018. This VIS image shows an unnamed crater in Noachis Terra. The crater is relatively young, with several different structures on the floor and rim still visible. The inner rim of the crater … Continue reading

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THEMIS: Hephaestus Fossae channel and crater

THEMIS Image of the Day, July 18, 2018. Today’s VIS image shows a crater on Hephaestus Fossae. The crater is fairly young, as there is only minimal modification of the crater floor. While it appears that the crater sits of … Continue reading

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HiRISE: Impact crater’s steep slopes

Steep slopes of impact crater. Beautiful Mars series. [More at links]

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THEMIS: Impact blast scars on crater rim

THEMIS Image of the Day, June 12, 2018. Today’s VIS image shows part of a crater located north of Hecates Tholus. The radial grooves in the ejecta blanket are still visible around the crater rim. There is also likely blast … Continue reading

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HiRISE: Within an inverted impact crater

Within an inverted impact crater in Vastitas Borealis. This particular crater is characterized by a central deposit of positive relief with a subdued rim as a result of sublimation in the surrounding territory. A comprehensive study of inverted impact craters … Continue reading

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HiRISE: A new impact crater

MRO keeps finding new impact sites on Mars. This one occurred within the dense secondary crater field of Corinto Crater, to the north-northeast. The new crater and its ejecta have distinctive color patterns. Once the colors have faded in a … Continue reading

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HiRISE: Twin craters in Meridiani Planum

This image shows two small impact craters located in Meridiani Planum. This is an example of the geologic principle of superposition: figuring out what happened first by looking at how features interact with each other. We can see that one … Continue reading

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THEMIS: Youngish crater in Utopia Planitia

THEMIS Image of the Day, May 17, 2018. This VIS image shows an unnamed crater located in Utopia Planitia. This relatively young crater has a steep inner rim, with floor deposits that originate from the crater rim itself. As craters … Continue reading

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HiRISE: Pair of new impact craters

MRO has discovered over 700 new impact sites on Mars. Often, a bolide breaks apart in the atmosphere and makes a tight cluster of new craters. Here we see just two new craters, both with the same distinctive pattern of … Continue reading

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HiRISE: Formations in context (Or, what is it?)

Some HiRISE images show strange-looking formations. Sometimes it helps to look at Context Camera images to understand the circumstances of a scene—like this cutout from CTX 033783_1509—which here shows an impact crater with a central peak, and a collapse depression … Continue reading

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