Titan (IMAGE) University of Colorado at Boulder Caption A new study by CU-Boulder researchers indicates a thick organic haze shrouding Earth several billion years ago was similar to the one now hovering over Saturn’s largest moon, Titan (above) and may have protected primordial life on the planet from damaging ultraviolet radiation. Credit Image courtesy NASA/JPL/Space Science Institute. 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.