Gravity Waves (IMAGE) Northwestern University Caption This illustration shows the merger of two black holes and the gravitational waves that ripple outward as the black holes spiral toward each other. Credit LIGO/T. Pyle Usage Restrictions Credit must be given 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.