Astronomers have unveiled a new catalog of massive galaxy clusters, revealing insight on the evolution of the universe. Galaxy clusters — the largest gravitationally bound structures in the universe — ...

A new image released by NASA offers a densely packed view of one of the universe’s most massive structures, revealing a ...

Galaxy clusters are the largest gravitationally bound structures in the universe, with each containing hundreds or even thousands of galaxies. When two of these giants collide, they send powerful ...

A small group of young researchers at the Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, have, through observations of the early stages of an extremely large galaxy cluster's ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand individual galaxies and huge reservoirs of superheated, X-ray-emitting gas. The ...

Astronomers have discovered a ghostly, million-light-year-long bridge of stars connecting two massive galaxies within the Abell 3667 cluster, 700 million light-years away. This glowing thread of ...

Galaxy cluster cosmology results from eROSITA’s X-ray all-sky survey deliver the most precise late-universe measurement of matter density and clumpiness ever achieved from galaxy clusters, easing the ...

When two pairs of galaxy clusters collide, the final result is not four separate objects, but one giant galaxy cluster. Astronomers using data from NASA's Chandra X-ray Observatory and several other ...

The faint glow of individual stars stretching between two bright galaxies indicates that the galaxies are actively merging while the galaxy clusters that surround them merge as well. The image was ...