Kepler Crater On The Surface Of Mars
Photograph - Photograph
March 25, 2006 - The floor of Kepler crater in early morning twilight on the surface of Mars. At the time that this image was acquired, the sun had just barely risen over the horizon. This faint illumination reveals a terrain dotted by numerous exhumed impact craters. These impact craters once dominated the landscape of this region until they were buried under a blanket of soil. Subsequent wind action and perhaps sublimation of subsurface water and carbon-dioxide ice has etched pits and grooves into the blanket of soil, revealing the older impact craters below. These exhumed impact craters can be recognized as circular depressions or plateaus. Also present in this scene are multitudes of dunes that have formed as sand has blown across the terrain. Dunes have accumulated in depressions, such as the pits and grooves associated with the exhumed impact craters, as well as on the floors of some of the larger craters.
December 7th, 2011
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