Astronomy Picture of the Day
January 3, 2016

Features of Eos Chasma
Features of Eos Chasma

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

In this truly clear (---> Dust-free) and suggestive VIS image, taken by the NASA - Mars Odyssey Orbiter on January, 29th, 2006, and during its 18.300th orbit around the Red Planet, we can see a small portion of the Martian Region known as Eos Chasma. Eos Chasma is a Chasma (---> Abyss) located in the Southern Portion of the Great Valles Marineris Canyon System, such as in the Margaritifer Sinus Quadrangle of Mars.

Eos Chasma’s Western Floor is mainly composed of an etched (---> highly corroded) Massive Material that is composed of either Volcanic or Aeolian Deposits which were - in eons - eroded by the action of the powerful Martian Winds. On the other hand, the Eastern End of Eos Chasma shows a large area of Streamlined Bars and Longitudinal Striations. These Features are interpreted to be Stream-carved Plateau-like Deposits and - maybe - Materials (---> Rocks and Dust) transported and deposited over there by flowing Fluids and Winds, respectively.

Just out of curiosity, Ganges Chasma is an offshoot (---> appendage, branch) of Eos Chasma and the (now decommissioned) NASA - Mars Reconnaissance Orbiter (or "MRO", for short) discovered, among many other things, Sulfates, Hydrated Sulfates, and Iron Oxides in this interesting Martian Region.

Latitude (centered): 14,9443° South
Longitude (centered): 312,7000° East
Instrument: VIS

This image (which is an Original Mars Odyssey Orbiter falsely colored and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 20227) has been additionally processed, magnified to aid the visibility of the details, contrast enhanced and sharpened, Gamma corrected and then re-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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