GW7.jpg (IMAGE) University of Portsmouth Caption This image shows the merger of a lower mass-gap black hole (dark grey surface) with a neutron star with colours ranging from dark orange (1 million tons per cubic centimetre) to white (600 million tons per cubic centimetre). The gravitational wave signal is 2 represented with a set of strain amplitude values of plus-polarisation using colours from dark blue to cyan. Credit I. Markin (Potsdam University), T. Dietrich (Potsdam University and Max Planck Institute for Gravitational Physics), H. Pfeiffer, A. Buonanno (Max Planck Institute for Gravitational Physics). Usage Restrictions None 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.