Artist's impression of a Hycean planet (IMAGE) University of Cambridge Caption Astronomers have identified a new class of habitable planets, dubbed ‘Hycean’ planets – hot, ocean-covered planets with hydrogen-rich atmospheres – which could represent a big step forward in the search for life elsewhere. Credit Amanda Smith, University of Cambridge Usage Restrictions Credit must be given to the creator. License CC BY 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.