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

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

The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes ...

Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually ...

"This is how you solve the universe-breaking problem." ...

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

After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.

Besides stars, the United States Navy uses quasars as beacons. Quasars are distant galaxies with supermassive black holes, surrounded by ... X-Ray Flashes from a Nearby Supermassive Black Hole ...

The supermassive black hole has been sending out flashes that have increased in speed. Astronomers say they have never seen anything like it before. The black hole is known as 1ES 1927+654 ...

Multiple NASA telescopes recently helped scientists search the sky for supermassive black holes—those up to billions of times heavier than the sun. The new survey is unique because it was as likely to ...

From a piece of cloth that may have belonged to Alexander the Great to an image of our galaxy's central black hole, here's our pick of controversial science stories in 2024.