A rare discovery of a "relaxed" galaxy cluster that may have formed close to 8 billion years ago could unveil new clues about the big bang.

Astronomers studying a distant galaxy cluster stumbled upon ancient radio signals that might hold clues to the formation of ...

A composite of galaxy cluster known as MACS0416 created using James Webb Space Telescope and Hubble Space Telescope imagery. ... A cult 1990s sci-fi film is getting rebooted with key differences.

NASA's James Webb Space Telescope (JWST) has produced a new image of the Bullet Cluster, which is a titanic collision between ...

Phil Plait on globular clusters: ... Topics Geek's Guide to the Galaxy Sci-fi space Books. Read More. The Mysterious Inner Workings of Io, Jupiter’s Volcanic Moon.

What’s a galaxy? On supporting science journalism. ... M87 sits in the center of the Virgo Cluster—a large group of galaxies bound together by gravity that boasts about 2,000 members.