An artistic image of G3425 binary system (IMAGE) Chinese Academy of Sciences Headquarters Caption An artistic image of G3425 binary system, including a visible red giant and an invisible low-mass black hole. Credit Image by WANG Song Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. 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.