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

The focus of this NASA/ESA Hubble Space Telescope image is an active spiral galaxy on a journey lasting hundreds of millions ...

The new view captures an irregularity in how stars are distributed within NGC 6397.

A spectacular spiral galaxy known as M88 is traveling toward the crowded heart of the Virgo Cluster, where powerful forces ...

NASA's Hubble Space Telescope snapped a delicate dance of celestial bodies in a new image of a distant galaxy that’s on a ...

A composite of galaxy cluster known as MACS0416 created using James Webb Space Telescope and Hubble Space Telescope imagery.

"It's astonishing to find such a strong radio signal at this distance." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A vast cloud of energetic ...

A developing galaxy cluster dating to about 1 billion years after the Big Bang is shown in this handout image released on January 28, 2026. The white box marks the field of view of the Chandra X-ray ...

The Champagne Cluster is a rare and beautiful example of two galaxy clusters smashing together. Its festive name comes from both its New Year’s Eve discovery and its bubbly appearance in space. Images ...

When studying local galaxy cluster Abell 3667, Anthony Englert GS, a Ph.D. candidate in physics, noticed something unique. Connecting the brightest galaxies in two small clusters within Abell 3667 was ...

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 ...

Most astronomers agree that young galaxy clusters should be relatively cool compared to older ones. But researchers recently found a very young... A galaxy cluster hotter than the surface of the sun ...