VideoBlack hole sound: NASA makes Perseus singularity audible to humans NASA has turned pressure waves emanating from a black hole at the centre of the Perseus galaxy into notes audible to humans for the first time Video
PhysicsHow a new kind of gravitational wave will reveal the early universe With 90 detections now under our belt, gravitational waves are solving riddles about the evolution of galaxies and missing black holes – and they could soon give us a glimpse of dark matter Features