Galaxy clusters are the largest objects in the universe held together by gravity and contain a gigantic black hole in their center. Astronomers usually find these black holes tamp down the formation of new stars by pumping heat and energy out into space. The supermassive black hole at the center of the Phoenix galaxy cluster is not playing this usual role. Instead, outbursts from the central black hole are actually helping more stars to form. To make this discovery, scientists combined data from NASA's Chandra X-ray Observatory, Hubble Space Telescope, and the Very Large Array.