Supermassive black holes

Researchers have linked X-ray emissions from 21 distant quasars to the rapid growth of supermassive black holes in the early universe
Astronomers have used the Web to discover individual ancient quasars of uncertain origin
Data from the Gemini North Telescope provide a possible explanation for the halting of the merger of a pair of supermassive black holes at the center of a galaxy
These are relatively close galaxies that face the Earth. The research reveals new details about the way galaxies are formed
NANOGrav Discovers Stronger Gravitational Waves Than Ever, Apparently Created by Pairs of Supermassive Black Holes