Illustration of 'Gravity and Light' Burst (IMAGE) NASA/Goddard Space Flight Center Caption In this artist's concept, pale concentric arcs illustrate gravitational waves produced as orbiting neutron stars merged. The event also formed near-light-speed particle jets that emitted gamma rays. In 2017, both signals were detected from the same source for the first time. Credit NASA's Goddard Space Flight Center/CI Lab Usage Restrictions No restrictions. License Public Domain 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.