Tag Archives: Mars Odyssey

THEMIS: Wind-eroded Medusae Fossae formation

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

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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THEMIS: Dry waterfall at edge of Shalbatana Vallis?

THEMIS Image of the Day, June 7, 2018. This VIS image shows a section of Shalbatana Vallis. Shalbatana Vallis is located in Xanthe Terra. Shalbatana is an outflow channel carved by massive floods from escaping groundwater whose source lies far … Continue reading

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THEMIS: Rough lava flows on Daedalia Planum

THEMIS image of the Day, June 6, 2018. Today’s VIS image shows a small portion of the lava flows that comprise Daedalia Planum. The flows originated at Arsia Mons, the youngest of the three Tharsis volcanoes. The Tharsis volcanoes are … Continue reading

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THEMIS: Landslide into Coprates Catena

THEMIS Image of the Day, June 5, 2018. A landslide deposit is visible in this VIS image of Coprates Catena. Coprates Catena parallels the much larger Coprates Chasma; both are part of Valles Marineris. More THEMIS Images of the Day … Continue reading

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THEMIS: Milankovic Crater dunes

THEMIS Image of the Day, June 4, 2018. Milankovic Crater is located in central Arcadia Planitia. This VIS image shows small dark sand dunes on the crater floor, and larger dunes within the central crater peak/pit feature. With a diameter … Continue reading

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THEMIS: Winding channel in Terra Sabaea

THEMIS Image of the Day, June 1, 2018. The northern margin of Terra Sabaea is a complex area between a cratered highland and complexly eroded lower plains. This VIS image of the region shows just one of the numerous unnamed … Continue reading

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THEMIS: Dark slope streaks in rugged terrain

THEMIS Image of the Day, May 31, 2018. This VIS image shows part of the ‘rim’ of Orcus Patera. How Orcus Patera formed is a mystery. Along the east facing ridge walls in this image multiple regions of dark slope … Continue reading

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THEMIS: Dunes and glacial deposits in Moreux Crater

THEMIS Image of the Day, May 30, 2018. Moreux Crater is located in the northern part of Terra Sabaea. The crater has a region of sand dunes on the crater floor, as well as features that are similar to glacial … Continue reading

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THEMIS: Complex erosion on border of Nili Fossae and Isidis Planitia

THEMIS Image of the Day, May 29, 2018. This VIS image is located on the margin of the Nili Fossae region and Isidis Planitia. At the bottom of the image a channel feature is visible, the branch on the right … Continue reading

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