Five-hundred-meter Aperture Spherical Telescope (IMAGE) Chinese Academy of Sciences Headquarters Caption FAST helps find key evidence for the existence of nanohertz gravitational waves with its high sensitivity Credit Image by NAOC of CAS 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.