Astronomy Picture of the Day
January 20, 2016

Unnamed Complex Impact Crater near Acheron Fossae
Unnamed Complex Impact Crater near Acheron Fossae

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

In this clear VIS image, taken by the NASA - Mars Odyssey Orbiter on November, 25h, 2015, and during its 61.879th orbit around the Red Planet, we can see a Complex and Unnamed Impact Crater located near the Martian Region known as Acheron Fossae.

The structure of this Impact Crater includes, among other things, an extremely small (let us say, "just a hint" of a) Central Pit and several Concentric Rims (---> better yet: "Terraces"). Radial Grooves can also be seen on the Ejecta Blanket (---> Pedestal) that surrounds the Crater. The truly high Albedo (---> Reflectivity) of the Inner (---> East-facing) Walls/Terraces of the aforementioned Unnamed Impact Crater cannot be explained at this time.

Latitude (centered): 36,8829° North
Longitude (centered): 232,3250° East
Instrument: VIS

This image (which is an Original Mars Odyssey Orbiter b/w and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 20240) has been additionally processed, magnified to aid the visibility of the details, extra-contrast enhanced and sharpened, Gamma corrected and then colorized in Absolute Natural Colors (such as the colors that a normal 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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