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

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

Most picture the night sky as an endless sea of twinkling stars. But if your eyes could see the universe in X-rays, you’d ...

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

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

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