Tag Archives: Acidalia Planitia

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: Blast scour at Bonestell Crater

THEMIS Image of the Day, April 17, 2018. Bonestell Crater is a relatively young crater located in Acidalia Planitia. The grooved surface of the ejecta blanket is evident in this VIS image. The grooves were likely eroded by the outward … Continue reading

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HiRISE: Troughs with axial ridges in Acidalia Planitia

Troughs with axial ridges in Acidalia Planitia. There are large, hundreds of meters in length, troughs in Acidalia Planitia, with high axial ridges down the center. While they appear fairly bland in Mars Orbital Camera images, we can see better … Continue reading

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HiRISE: Evolution of gully features in Acidalia Planitia

This observation captures details regarding the evolution of gully features observed in a crater in Acidalia Planitia. A Context Camera image provides context for these gullies showing an approximately 7-kilometer diameter crater in which we see that the gullies occur … Continue reading

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HiRISE: Entrance to Mawrth Vallis

In Andy Weir’s “The Martian,” stranded astronaut Mark Watney drives from the Ares 3 landing site in Acidalia Planitia towards the Ares 4 landing site in Schiaparelli Crater via Mawrth Vallis. This image covers the entrance to Mawrth Vallis. (Have … Continue reading

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HiRISE: Surface & terrain variety in NE Acidialia

Variety of surfaces and terrains in far northeast Acidalia Planitia. Beautiful Mars series.

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HiRISE: Cratered cones in Acidalia Planitia

This image shows part of a broad plain covered with cratered cones and domes in the Northern lowlands of Mars. These cones are typically lighter and smoother than their surroundings, and also have different colors. One possible explanation for these … Continue reading

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THEMIS: Rampart crater

THEMIS Image of the Day, February 17, 2016. This VIS image shows an unnamed crater in Acidalia Planitia. The margins of the ejecta are lobate and higher than the ejecta closer to the crater. This type of ejecta blanket is … Continue reading

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THEMIS: Crater – false color

THEMIS Image of the Day, January 7, 2016. The THEMIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations of … Continue reading

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MARCI weather report, November 2-8, 2015

At the beginning of last week, condensate water-ice clouds associated with the aphelion cloud-belt were spotted over Tharsis, Arabia, and Syrtis Major. During this time, dust lifting activity was also observed over Aonia. At the end of the week, three … Continue reading

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