NANOGrav1 (IMAGE) West Virginia University Caption An artist's interpretation shows an array of pulsars being affected by gravitational ripples produced by a supermassive black hole binary in a distant galaxy. Credit Submitted Illustration/Aurore Simonnet, NANOGrav Collaboration 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.