n 2018, a supermassive black hole destroyed a star that ventured too close — a normal tidal disruption event, the kind astronomers have now observed over a hundred times. They recorded it, studied it, and moved on. But years later, something unexpected happened: that same black hole, nicknamed “Jetty McJetface” by scientists (AT2018hyz), started emitting a radio jet 50 times more powerful than before. No one expected a black hole to “reactivate” like that, long after devouring its victim. The most likely explanation: not all of the star’s material fell into the black hole right away. Part of that stellar debris stayed in orbit and only began falling in and…