At the heart of a galaxy 145 million light-years away, the James Webb Space Telescope has illuminated one of the cosmos's most elegant paradoxes: the very engines that should starve supermassive black holes are, in fact, the source of their sustenance. Observations of NGC 4696 have traced a self-regulating cycle in which jets heat surrounding gas, that gas eventually cools into filaments, and those filaments spiral inward — guided by magnetic forces — to feed the rotating disk that powers the black hole anew. What existed only as theoretical prediction has now been witnessed in motion, offerin