Researchers from the University of Connecticut have created the first 3D maps of star-forming gas clouds in one of the most ...

Astronomers have detected a mid-infrared flare from the supermassive black hole at the heart of the Milky Way galaxy for the ...

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

Researchers found far more hidden black holes than previously known, indicating plenty of behemoths lurking in thick clouds ...

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

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

"If our eyes were able to detect X-rays, the sky would be full of dots. And every single one of those dots would be an ...

NASA Goddard Space Flight Center runs down the best-known Black Holes in the Milky Way galaxy and the Large Magellanic Cloud. Credit: NASA Goddard Space Flight Center ...

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

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 ...

Galaxy clusters are home to many giant elliptical galaxies that have completed their growth and are not forming stars.

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