Density Waves in Saturn's Rings (IMAGE) University of California - Santa Cruz Caption This Cassini image shows in unprecedented detail a density wave in Saturn's B ring, most likely caused by a small moon systematically perturbing the orbits of ring particles. Credit NASA/JPL-Caltech/Space Science Institute Usage Restrictions For use only with news coverage of this research 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.