Titan's atmosphere (IMAGE) Faculty of Sciences of the University of Lisbon Caption In the upper layer of Titan's atmosphere, visible here in blue light, methane molecules are being dissociated by sunlight and recombining into ethane and acetylene molecules. Further down, the orange mists completely hide the surface. Credit NASA/JPL/Space Science Institute Usage Restrictions Attribution is required. 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.