Polarised view of the black hole in M87 (IMAGE) University of Massachusetts Amherst Caption The lines mark the orientation of polarisation, which is related to the magnetic field around the shadow of the black hole. Credit Credit: © EHT Collaboration 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.