Climate Change for Aliens: Class V Planet (IMAGE) University of Rochester Caption An artist's rendering of what a Class V planet might look like under Adam Frank's new classification system. Credit (University illustration / Michael Osadciw) 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.