Astronomy Picture of the Day
May 14, 2014

Unnamed Impact Crater with Dunefield
Unnamed Impact Crater with Dunefield

Credits: NASA/JPL/Arizona State University (ASU) - Credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/IPF

In this VIS image, taken by the NASA - Mars Odyssey Orbiter on April, 3rd, 2014, and during its 54.212th orbit around the Red Planet, we can see a so-called "Sand Sheet" - with extremely dark Surface Dune-like Landforms (actually the aformentioned Dune-like Landforms are just Ripples, very similar to the ones that we have seen inside the relatively small Impact Crater known as "Endurance", visited, a few years ago, by the NASA - Mars Exploration Rover (or "MER", for short) Opportunity and found in the Peri-Equatorial Martian Region of Meridiani Planum) - that covers the entire Floor of an Unnamed Impact Crater located at a very high Northern Latitude, not too far away from the North Polar Cap.

The gray/white-colored area that completely surrounds this Unnamed Impact Crater and which, then, goes toward the North/West, could (and should) be, in our opinion, as IPF, the initial portion of a large and long Windstreak.

Latitude (centered): 74,1474° North
Longitude (centered): 319,1200° East
Instrument: VIS

This image (which is a crop taken from an Original Mars Odyssey Orbiter b/w and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 18240) has been additionally processed, magnified to aid the visibility of the details, contrast enhanced, Gamma corrected and then colorized in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Mars Odyssey Orbiter and then looked down, towards the Surface of Mars), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.

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