Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes ...

Caltech’s Katie Bouman explains how the Event Horizon Telescope Collaboration captured the first imager of the Sagittarius A* ...

Astronomers have captured the most detailed infrared images yet of an active galactic nucleus (AGN), using the Large ...

Active galactic nuclei (AGN) are among the most energetic phenomena observed in the universe. These luminous objects, powered ...

"Finding more supermassive black holes that are potentially hosting jets raises the question as to how these black holes grew ...

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...

The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...

The first black hole that astronomers observed "turning off" just turned back on, releasing jets of hot gas into the cosmos.