Astronomy Picture of the Day
November 9, 2012

Features of Canuleia Crater
Features of Canuleia Crater

Credits: NASA/JPL-Caltech/UCLA/MPS/DLR/PSI/Brown and Dr Paolo C. Fienga/LXTT/IPF for the additional process. and color.

This suggestive image from NASA's - Dawn Spacecraft shows us a close up of a portion of the Rim of the Impact Crater Canuleia, located on the Giant Asteroid 4-Vesta, and a large view of the surrounding Terrain. Canuleia Crater, which is approx. 6 miles (such as about 9,6 Km) in diameter, is the large Impact Crater visible at the bottom-left of the picture. This frame clearly illustrates the structure of the interior of the Crater (with a Deposit of - apparently fresh - Debris at the bottom, likely formed by Dust and Rocky Material that slid downslope), the Gullies-like Features which characterize all the visible portion of its Inner Rim, and some complex detail of the Fresh System of Rays that, departing from Canuleia, spread across the Surface of 4-Vesta. The picture was taken by Dawn's Framing Camera on December 29, 2011, from an altitude of about 130 miles (such as approx. 209 Km).

This picture (which is an Original NASA - Dawn Spacecraft image published on the NASA - Planetary Photojournal with the ID n. PIA 16176) has been additionally processed and then colorized, according to an informed speculation carried out by Dr Paolo C. Fienga (LXTT-IPF), in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Dawn Spacecraft and then looked outside, towards the Giant Asteroid 4-Vesta), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team. Different colors, as well as different shades of the same color, mean, among others, the existence of different Elements present on the Surface of 4-Vesta, each having a different Albedo (---> Reflectivity) and Chemical Composition.

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