News Release 29-Apr-2019 太阳系外行星与水行星 Peer-Reviewed Publication Proceedings of the National Academy of Sciences 基于一个行星生长模型的对观测到的太阳系外行星的质量和半径分布的模拟提示，半径是地球2到4倍的亚海王星的系外行星很可能是含有至少25%的以水为主的冰或液体的水行星，而非岩石核心外面包围着气体外壳的气态矮星。 ### Journal Proceedings of the National Academy of Sciences 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.
