Gravitational waves, music and metaphors

On Thursday, June 29, 2023, the North American Nanohertz Observatory for Gravitational Waves or NANOGrav announced evidence for gravitational waves emitted by pairs of supermassive black holes across the universe or, in the words of the astrophysicist Katie Mack: “We’re using RADIATION JETS from DEAD STARS to detect RIPPLES IN SPACE from the COLLISIONS OF …