Researchers working with data from the South Pole Telescope have released a major catalog of galaxy clusters, giving ...

The cluster is very bright at X-ray wavelengths and is one of the most extensively studied galaxy clusters at X-ray and radio ...

Using the James Webb Space Telescope, astronomers have spotted a massive and densely packed galaxy cluster before such structures were thought to be possible.

Far beyond the Milky Way, vast collections of galaxies continue to drift, gather and occasionally collide. One such region ...

In 2023, astronomers spotted the longest stellar river across a chaotic galaxy cluster ...

The James Webb Space Telescope has captured an amazing view of galaxy cluster MACS J1149.5+2223 (MACS J1149). It is "located ...

X-ray observations of the cluster revealed that it is made up of two galaxy clusters merging along our line of sight.

For decades, astronomers have searched for the birthplace of globular clusters, the dense spherical collections of stars that ...

NASA is marking the United States' 250th birthday with four striking red, white, and blue images of deep space from the ...

The James Webb Space Telescope observed 13-billion-year-old light, using a closer galactic cluster like a magnifying glass. The work helps experts understand the universe’s earliest stars and mysterio ...

New cosmic census based on five years of data opens a powerful new window into the large-scale structure of the universe ...

For decades, astronomers have pictured galaxies and their central black holes growing together. In the familiar story, a ...