Mars Odyssey THEMIS Image: Freedom Crater

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Context image credit: NASA/Mars Orbiter Laser Altimeter (MOLA) Team
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Freedom crater, located in Acidalia Planitia, exhibits a concentric ring
pattern in its interior, suggesting that there has been some movement of these
materials towards the center of the crater. Slumping towards the center may
have been caused by the presence of ground ice mixed in with the
sediments. The origin for the scarps on the western edge of the interior
deposit is unknown.

[Source: ASU THEMIS Science Team]

NASA’s Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA’s Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

Image Credit: NASA/JPL/Arizona State University