Tag Archives: Mars Odyssey

THEMIS: On the shore of a sea of sand

Posted on June 20, 2018 by rburnham

THEMIS Image of the Day, June 20, 2018. This VIS image shows a small part of the huge northern dune field called Olympia Undae. This dune field surrounds 1/3 of the north polar cap. Collected in northern summer, there is … Continue reading →

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THEMIS: Dunes and sand sheet in Rabe Crater

Posted on June 19, 2018 by rburnham

THEMIS Image of the Day, June 19, 2018. The large sand sheet with surface dune forms seen in this VIS image is located on the complex floor of Rabe Crater. The sand is likely derived by erosion into the deposit … Continue reading →

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THEMIS: Merging stream channels in Xanthe Terra

Posted on June 18, 2018 by rburnham

THEMIS Image of the Day, June 18, 2018. Today’s VIS image shows an unnamed channel in Xanthe Terra. The large bend in the channel was created as the flow of liquid from the bottom of the image was deflected by … Continue reading →

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THEMIS: Flood-sculpted ridge in Shalbatana Vallis

Posted on June 15, 2018 by rburnham

THEMIS Image of the Day, June 15, 2018. This VIS image shows a section of Shalbatana Vallis. Shalbatana Vallis is one of many channels that empty into Chryse Planitia. More THEMIS Images of the Day by geological topic.

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Four NASA spacecraft tackle dust-storm science

Posted on June 14, 2018 by rburnham

One of the thickest dust storms ever observed on Mars has been spreading for the past week and a half. The storm has caused NASA’s Opportunity rover to suspend science operations, but also offers a window for four other spacecraft … Continue reading →

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THEMIS: Dust avalanches in Lycus Sulci

Posted on June 14, 2018 by rburnham

THEMIS Image of the Day, June 14, 2018. Lycus Sulci is a very complex region surrounding the northern and western flanks of Olympus Mons. This VIS image shows some of the tectonic ridges found in Lycus Sulci as well as … Continue reading →

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THEMIS: Hebes Mensa

Posted on June 13, 2018 by rburnham

THEMIS Image of the Day, June 13, 2018. Located in the center of Hebes Chasma is a large deposit of layered material called Hebes Mensa. Extensive erosion has created gullies in the mensa and distributed fine sand size materials to … Continue reading →

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THEMIS: Impact blast scars on crater rim

Posted on June 12, 2018 by rburnham

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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THEMIS: Wind-eroded Medusae Fossae formation

Posted on June 11, 2018 by rburnham

THEMIS Image of the Day, June 11, 2018. This VIS image shows part of Medusa Fossae. Winds have eroded materials in this region, creating ridges and valleys aligned with the direction of the wind. The formation materials appear soft and … Continue reading →

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THEMIS: Landslide debris and dunes in Coprates Chasma

Posted on June 8, 2018 by rburnham

THEMIS Image of the Day, June 8, 2018. Today’s VIS image shows part of the wall and floor of Coprates Chasma. Several landslide deposits are visible as well as small regions of sand dunes. More THEMIS Images of the Day … Continue reading →

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