Tag Archives: impacts

Opportunity: Fresh crater?

Sol 4680, March 24, 2017. What appears to be a relatively recent disturbance, perhaps 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 … 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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HiRISE: Old features and new

This image covers a portion of a typical impact crater in Terra Sirenum at about 40 degrees south latitude on Mars. At the top of the image, outside the crater rim, there is a mid-latitude mantle, rough in places where … Continue reading

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HiRISE: Dragonfly-shaped crater

The broader scene for this image is the fluidized ejecta from Bakhuysen Crater to the southwest, but there’s something very interesting going on here on a much smaller scale. A small impact crater, about 25 meters in diameter, with a … 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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HiRISE: 9-km impact crater and its central peak

This image reveals an impact crater, nine kilometers in diameter, with a central peak. Impact craters of various sizes and ages can be found across the Martian surface. Each impact crater on Mars possesses a unique origin and composition, which … Continue reading

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HiRISE: Hard knocks in Tyrrhena Terra

This enhanced-color image shows a small portion of a dark crater floor in the Tyrrhena Terra region of Mars. This is largely ancient hard bedrock that has been cratered by numerous impacts over the eons. Two other interesting geological features … Continue reading

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HiRISE: Raining rocks

Impact ejecta is material that is thrown up and out of the surface of a planet as a result of the impact of an meteorite, asteroid or comet. The material that was originally beneath the surface of the planet then … 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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HiRISE: Crater with exposed layers

On Earth, geologists can dig holes and pull up core samples to find out what lies beneath the surface. On Mars, geologists cannot dig holes very easily themselves, but a process has been occurring for billions of years that has … Continue reading

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