Views of a massive galaxy cluster Abell 2256 have been captured by NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton and ...

This composite image features one of the most complicated and dramatic collisions between galaxy clusters ever seen. Known officially as Abell 2744 ... leaving a black hole where new discoveries ...

Astronomers have observed a tidal disruption event, AT2024tvd, caused by a rogue supermassive black hole devouring a star far from its galaxy's center. This marks the first time a TDE has been ...

In 1958 the great extragalactic astronomer George Abell of UCLA compiled a catalog of galaxy clusters. It was extended by Abell and collaborators in 1987 and eventually contained 4,076 clusters.

Astronomers have caught a black hole far from the center of its home galaxy ripping a star to shreds — providing, for the first time, direct evidence of a rogue supermassive black hole in action.

Prior to the discovery, every known black hole was gravitationally associated with a galaxy, a star cluster, or some other massive and visible object or objects. That’s sort of the nature of ...

UC Berkeley astronomers have discovered a second massive black hole within another galaxy, a finding that supports the theory that galaxies grow by merging with other galaxies. Ryan Chornock ...

Most large and spiral-shaped galaxies have a black hole, but this was difficult to locate. After decades of efforts, astronomers have found evidence suggesting a supermassive black hole in the ...

On each pass, the star kicks out one Jupiter's worth of mass from the black hole's disk. A star in a faraway galaxy is sending itself into a spiral of doom, repeatedly plunging through a disk of ...

Invisible Dark: Lone black holes passing through the galaxy should be a pretty common occurrence in the Milky Way, but they are notoriously hard to spot. According to recently published research ...

Astronomers using the James Webb Space Telescope have found compelling evidence of a supermassive black hole at the heart of the Messier 83 galaxy. Webb's Mid-Infrared Instrument detected highly ...