vendredi 5 juin 2015

Fresh Crater Near Sirenum Fossae Region of Mars

NASA - Mars Reconnaissance Orbiter (MRO) logo.

June 5, 2015

The High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA's Mars Reconnaissance Orbiter acquired this closeup image of a "fresh" (on a geological scale, though quite old on a human scale) impact crater in the Sirenum Fossae region of Mars on March 30, 2015.

This impact crater appears relatively recent as it has a sharp rim and well-preserved ejecta. The steep inner slopes are carved by gullies and include possible recurring slope lineae on the equator-facing slopes. Fresh craters often have steep, active slopes, so the HiRISE team is monitoring this crater for changes over time. The bedrock lithology is also diverse. The crater is a little more than 1-kilometer wide.

Artist's view of NASA's Mars Reconnaissance Orbiter (MRO)

More information and image products:

The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colorado. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project and Mars Science Laboratory Project for NASA's Science Mission Directorate, Washington.

For more information about NASA's Mars Reconnaissance Orbiter (MRO), visit: and

Images, Text, Credits: NASA/JPL/University of Arizona/Caption: Alfred McEwen.


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