A Crater On Mars
by Stocktrek Images
Title
A Crater On Mars
Artist
Stocktrek Images
Medium
Photograph - Photograph
Description
The largest number of gullies on Mars occur on the walls of southern hemisphere craters. During southern winter, many of the gullied walls are in shadow. It has been known for many years from images taken by the Mars Orbiter Camera on the Mars Global Surveyor that frost forms on these shadowed slopes and that differences in the amount or nature of the frost deposits highlight the gully floors and deposits. Such differences may occur because the materials are of different particle sizes or have other differing attributes that affect their thermophysical properties. To investigate these phenomena, the Context Camera on the Mars Reconnaissance Orbiter acquired this image of a crater at 39.3 degrees south, 136.5 degrees west, where gullies were known to display frost during winter.
Uploaded
December 7th, 2011
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