Titan's impact craters (IMAGE) University of Hawaii at Manoa Caption Cassini SAR (synthetic aperture radar) images of Titan's impact craters. Arrows indicate potential forms of crater modification processes, including: dunes and sands (purple), channels (blue), and significant crater rim erosion (pink). Credit NASA/ Cassini Usage Restrictions No restrictions. License Public Domain 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.