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A Crater on Mars That's Only "New" in a Cosmic Sense

Illustration for article titled A Crater on Mars Thats Only New in a Cosmic Sense

How can you tell if a crater is recent? The rim is sharp and the material ejected from its formation is well-preserved. Since it’s relatively recent — in geological time — this crater could have a “steep, active slope,” so NASA will monitor it for changes.

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This image was taken by the High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA’s Mars Reconnaissance Orbiter on March 30, 2015.

Image credit: NASA/JPL/University of Arizona


Contact the author at katharine@io9.com.

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