The impact of an asteroid or comet left hundreds of millions of years ago the scars on the landscape that are still visible on this radar image in an area of the Sahara Desert, north of Chad. The original crater was buried by sediments that were partially eroded to show the current appearance of rings.
Dark streaks are the deposits of sand that came from valleys cut by thousands of years of wind erosion. The dark band on the upper right side of the image is a portion of a second crater.
Scientists are using radar images to investigate the possibility that Aorounga is one of a string of impact craters formed by multiple impacts.
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