Astronomy Picture of the Day
July 18, 2014

Hills and other Features of Northern Arabia Terra
Hills and other Features of Northern Arabia Terra

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, 23rd, 2014, and during its 54.816th orbit around the Red Planet, we can see a group of relatively small Hills and Impact Craters (in addition to other minor and almost Chaotic Surface Features) which are found on the Floor of a large and Unnamed Depression located in the Northern portion of the very old and dusty Martian Region known as Arabia Terra.

The main characteristics of Arabia Terra can be found in the facts that this Region is densely Cratered and heavily Eroded, and it is such a "battered" Surface Topography that indicates a great age - as a matter of fact, Arabia Terra is presumed (by Planetary ScientistsIPF included) to be one of the oldest Regions (or even "Terrains", like NASA is used to say) of the whole Red Planet!

Latitude (centered): 36,2303° North
Longitude (centered): 13,2263°
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 18508) has been additionally processed, magnified to aid the visibility of the details, contrast enhanced and sharpened, 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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