Tag Archives: Mars Odyssey

THEMIS: Crater-wall gullies in Aonia Terra

Posted on December 3, 2018 by rburnham

THEMIS Image of the Day, December 3, 2018. Today’s VIS image shows an unnamed crater located in Aonia Terra. Numerous gullies dissect the inner crater rim. This crater impacted onto the rim of the much larger Slipher Crater. See more … Continue reading →

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THEMIS: Solis Planum lava flows and graben

Posted on November 30, 2018 by rburnham

THEMIS Image of the Day, November 30, 2018. Today’s VIS image shows part of Solis Planum. Both volcanic and tectonic forces created the features in this image. The linear features that run diagonally across the image are fault features called … Continue reading →

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THEMIS: Youngish crater in Noachis Terra

Posted on November 29, 2018 by rburnham

THEMIS Image of the Day, November 29, 2018. This VIS image shows half of an unnamed crater in Noachis Terra. The complex rim and rough floor are indicative of a relatively young crater. With time and erosion, craters fill in … Continue reading →

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THEMIS: Active dunes in Noachis Terra

Posted on November 28, 2018 by rburnham

THEMIS Image of the Day, November 28, 2018. Today’s VIS image shows a sand sheet with surface dunes forms on the floor of an unnamed crater in Noachis Terra. Dark dunes indicate active dunes: Winds stir the sand, which kicks … Continue reading →

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THEMIS: Winding channel of Nirgal Vallis

Posted on November 26, 2018 by rburnham

THEMIS Image of the Day, November 26, 2018. Today’s VIS image shows a small section of Nirgal Vallis. Located in Noachis Terra, Nirgal Vallis was carved by water and forms one of the longest valley systems on Mars. See more … Continue reading →

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THEMIS: Dunes in Kaiser Crater

Posted on November 23, 2018 by rburnham

THEMIS Image of the Day, November 23, 2018. This VIS image shows part of the floor of Kaiser Crater, including several sand dunes. Kaiser Crater is located in Noachis Terra. The dunes’ dark tone indicates they are free of dust, … Continue reading →

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THEMIS: Swiss-cheese weathering in old volcanic region

Posted on November 22, 2018 by rburnham

THEMIS Image of the Day, November 22, 2018. Amphitrites Patera is an old volcanic complex located south of Hellas Planitia. The surface in this VIS image has a unusual “Swiss-cheese” texture, one seen more commonly on the nearby south polar … Continue reading →

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THEMIS: Field of hills in Terra Cimmeria

Posted on November 21, 2018 by rburnham

THEMIS Image of the Day, November 21, 2018. This image is located in Terra Cimmeria. The bright, irregular features are hills. This part of Terra Cimmeria is made up mostly by flat lying plains, with no other hills in the … Continue reading →

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THEMIS: Graben and pits in Sirenum Fossae

Posted on November 20, 2018 by rburnham

THEMIS Image of the Day, November 20, 2018. This VIS image is located in Sirenum Fossae near Daedalia Planum. The arc at the bottom of the image is the rim of a crater that was dissected when the tectonic event … Continue reading →

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THEMIS: Channel in Coracis Fossae

Posted on November 19, 2018 by rburnham

THEMIS Image of the Day, November 19, 2018. Today’s VIS image shows one of the numerous channel features that dissect the highlands between Solis Planum and Aonia Terra. The linear features in the region include both tectonic graben and fluvial … Continue reading →

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