Illustration of pebble mixing process (IMAGE) Field Museum Caption Artistic depiction of pebble mixing process from the Aguas Zarcas parent body. Pebble-sized fragments get ejected and redeposited on the asteroid surface. Credit Illustration credit: April I. Neander. Asteroid image: NASA/Goddard/University of Arizona. Usage Restrictions Please include credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.