Supermassive black hole (IMAGE) University of Hawaii at Manoa Caption Artist's impression of a supermassive black hole. Cosmological coupling allows black holes to grow in mass without consuming gas or stars. Credit UH Mānoa Usage Restrictions none License Original 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.