A New Goldilocks for Habitable Worlds (IMAGE) Yale University Caption A new study suggests a planet must start with an internal temperature that is "just right" in order to support life. Credit Michael S. Helfenbein/Yale University 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.