Tag Archives: Mars Odyssey

THEMIS: Small channel in Terra Sirenum

THEMIS Image of the Day, November 13, 2018. A small channel system dissects the rim of this unnamed crater in Terra Sirenum. The plains around the crater rim show faint dark streaks, tracks left by dust devils. See more THEMIS … Continue reading

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THEMIS: South polar ice cap textures

THEMIS Image of the Day, November 12, 2018. This VIS image shows part of the south polar cap. This image was collected near the end of the southern spring season. See more THEMIS Images of the Day by geological subject.

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THEMIS: Channels flowing from a ridge

THEMIS Image of the Day, November 9, 2018. This VIS image is located in Terra Sirenum. The bright linear feature at the bottom of the image is the crest of a ridge. The multiple channel features toward the top of … Continue reading

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THEMIS: Sinuous features hint at ground ice

THEMIS Image of the Day, November 8, 2018. This VIS image is located in an unnamed crater in Noachis Terra. The sinuous feature near the bottom of the crater rim appears to have been caused by down slope movement of … Continue reading

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THEMIS: Pit chains and craters on Ascraeus Mons

THEMIS Image of the Day, November 7, 2018. The linear features in this VIS image are located on part of the large flow feature on the southern flank of Ascraeus Mons. The features most likely formed by collapse of the … Continue reading

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THEMIS: Crater rim gullies in Terra Sirenum

THEMIS Image of the Day, November 6, 2018. Numerous gullies dissect the northern rim of this unnamed crater in Terra Sirenum. The inside of the north rim faces away from the Sun and is more deeply gullied than the Sun-facing … Continue reading

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THEMIS: Graben in Sirenum Fossae

THEMIS Image of the Day, November 5, 2018. This VIS image shows a section of Sirenum Fossae. The linear features are called graben, and are a sure sign of tension force in the local crust. Graben are formed by blocks … Continue reading

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THEMIS: Crater floor infill and valley

THEMIS Image of the Day, November 2, 2018. This VIS image shows a large linear depression in the center of an unnamed crater in Noachis Terra. This crater and the nearby Maunder and Asimov craters share this odd morphology. The … Continue reading

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THEMIS: Rough ejecta blanket around Hesperia Planum crater

THEMIS Image of the Day, November 1, 2018. This VIS image shows part of the northern rim of an unnamed crater in Hesperia Planum. See more THEMIS Images of the Day by geological subject.

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THEMIS: Swiss cheese and other ice cap textures

THEMIS Image of the Day, October 31, 2018. There are several different surface textures in the South Polar ice. The surface in this image with the round/semi round depressions is informally called Swiss cheese. See more THEMIS Images of the … Continue reading

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