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SCIENTISTS EXPECTED TO OBSERVE MORE LARGE CRATERS ON CERES THAN NASA'S DAWN MISSION HAS FOUND.
KERWAN CRATER, AT 174 MILES (280 KM) WIDE, IS THE LARGEST CONFIRMED IMPACT STRUCTURE.
A HUGE DEPRESSION, CALLED VENDIMIA PLANITIA, MAY BE THE REMNANT OF A MUCH LARGER, MUCH OLDER IMPACT FEATURE.
A VARIETY OF PROCESSES COULD EXPLAIN WHY THE LARGEST CRATERS HAVE BEEN ERASED OVER TIME