Dunes on Titan (IMAGE) Arizona State University Caption Lines of dunes crawl across the surface of Titan, Saturn's largest moon, in a radar image showing dunes as dark. Experiments at Arizona State University's wind tunnel indicate the dune particles move only under winds that blow stronger than scientists previously thought. Credit NASA/JPL-Caltech/ASI Usage Restrictions None License Licensed 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.