Black Hole (IMAGE) Chinese Academy of Sciences Headquarters Caption A black hole including the heartbeat signal observed in 2007 and 2018 Credit JIN Chichuan and NASA/GSFC 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.