Tag Archives: craters

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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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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HiRISE: Plains south of Valles Marineris

This enhanced-color sample reveals the incredible diversity of landforms on some Martian plains that appear bland and uniform at larger scales. Here we see layers, small channels suggesting water flow, craters, and indurated sand dunes. [More at link]

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THEMIS: Arabia Terra crater in false color

THEMIS Image of the Day, March 21, 2017. Today’s false color image shows the floor of an unnamed crater in Arabia Terra. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways … Continue reading

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HiRISE: Craters on a crater’s floor

Craters on a crater’s floor. Beautiful Mars series.

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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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HiRISE: Raised bedrock in Terra Cimmeria

Large impact craters have central hills or mountains, because the tremendous shock waves from the impact first compresses the ground, then causes a rebound when it becomes uncompressed. This effectively raises bedrock that was once deeply buried to the surface. … Continue reading

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HiRISE: Small fresh crater, with ejecta

Small fresh crater. Beautiful Mars series.

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THEMIS: Crater on crater in Noachis Terra

THEMIS Image of the Day, December 7, 2016. This VIS images shows part of two unnamed craters in Noachis Terra. The younger of the two craters is at the bottom of the image with one side visible in the image. … Continue reading

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HiRISE: Periglacial terrain & dust devil tracks

Periglacial terrain. Beautiful Mars series.

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