Scientists using the XRISM satellite have uncovered a major clue to one of astronomy’s longstanding mysteries: why galaxy ...

The Milky Way galaxy was long thought to be a member of the Virgo supercluster, a complex, twisting branch containing more than 100 individual galaxy groups and clusters stretching for more than a ...

Along with a number of neighbouring galaxies — including our closest galactic neighbour, the Andromeda Galaxy — it forms what ...

The largest sample of galaxy groups ever detected has been presented by a team of international astronomers using data from the James Webb Space telescope (JWST) in an area of the sky called COSMOS ...

There's a big diamond in the sky made by connecting the stars Arcturus, Spica, Denebola and Cor Caroli. Once found, you can ...

Astronomers realized about 100 years ago that the Virgo Cluster and the Local Group, of which the Milky Way and Andromeda galaxies are members, compose the Virgo Supercluster. About 100 galaxy ...

Astronomers have spotted something that appears to stretch around ten billion light years across. This so-called ...

Japanese astronomers have presented new results of observations that suggest an unidentified X-ray source designated AX ...

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.

This composite image features one of the most complicated and dramatic collisions between galaxy clusters ever seen. Known officially as Abell 2744, this system has been dubbed Pandora’s Cluster ...

"All the odd shapes and swirling gas observed in the Perseus cluster now make sense within the context of a major merger." Astronomers have discovered a long-missing element of a galactic ...

The research group's impressive image of a galaxy cluster more than 6 billion light years away will be showcased as the European Space Agency's (ESA) picture of the month from April 29.