The X‑arithmetic technique offers a powerful new way to map the physics of other galactic structures across the universe and ...

Astronomers have employed NASA's Chandra spacecraft to perform X-ray observations of a massive galaxy cluster known as SPT-CL ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand ...

A massive, spacetime-warping cluster of galaxies is the setting of today's NASA/ESA Hubble Space Telescope image. The galaxy cluster in question is Abell 209, located 2.8 billion light-years away in ...

Astronomers have explained how a galaxy cluster maintains its heat, despite emitting X-rays that cool the hot gas at its center. The group discovered the existence of a fast-moving, high-temperature ...

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 ...

NASA released exciting information on Thursday regarding the discovery of "monster stars" and "spiral galaxies." Using the Hubble Space Telescope, astronomers were able to identify nine "monster stars ...

The galaxy cluster PLCKG 287.0+32.9, located 5 billion light-years away, exhibits an exceptionally violent collision of three subclusters, characterized by extensive turbulence and shock waves.

NASA's Chandra X-ray Observatory has revealed stunning cosmic structures within galaxy clusters, like bubbles and waves, ...

James Webb telescope's 'starlit mountaintop' could be the observatory's best image yet — Space photo of the week The James Webb telescope proves Einstein right, 8 times over — Space photo of the week ...

CHAMPAIGN, Ill. -- A trio of massive, young star clusters found embedded in a star cloud may shed light on the formation of super-star clusters and globular clusters. The discovery, made with images ...