Artist's conception of Titan's surface (IMAGE) Faculty of Sciences of the University of Lisbon Caption Artist's conception of Titan's surface. This moon of Saturn is one of the worlds in the Solar System that most resembles Earth, despite the temperature there reaching -179° Celsius. It is the only place in the Solar System with lakes, but these are hydrocarbon lakes. These molecules, made only of carbon and hydrogen, act like water on Earth, participating in a methane cycle, with rain, river formation and evaporation. 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.