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

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

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

According to scientists, there could be more black holes in the universe than previously thought. Researchers reckon ...

All outdoor adventurers should have one or two big and rugged duffel bags in their gear closet—ideally stuffed with outdoor ...

In any globular cluster, all its stars formed at the same time, from the same cloud of gas. The Milky Way has more than 150 known globular clusters; these objects are excellent tools for studying, for ...

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 ...

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

Dark matter has eluded us for many decades. Even our most advanced particle colliders and sophisticated underground detectors have come up short. But it may be that we can finally ...

In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again by 2020 -- only to dramatically increase its output again in 2023. At that ...

Since 2018, we've seen 1ES 1927+654 generate jets in real time and found it may have a lone white dwarf orbiting near the ...