Cosmic Volcano: Monster Black Hole Reawakens After 100 Million Years
Astronomers using LOFAR observed a supermassive black hole at the center of a giant galaxy (J1007+3540) that had been quiet for about 100 million years. The black hole’s enormous radio jets have reactivated, interacting with the surrounding hot gas and forming a layered structure—signaling episodic active galactic nucleus activity and a dramatic wake-up in the cosmic engine.