Scientists have detected a surprisingly hot galaxy cluster dating back to the universe’s infancy. The cluster formed far ...

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

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 ...

From NPR News, this is ALL THINGS CONSIDERED. I'm Juana Summers. SCOTT DETROW, HOST: I'm Scott Detrow, and I am joined by Emily Kwong and Berly McCoy of NPR's science podcast Short Wave for our ...

This infant cluster is massive for its relative youth, with a core measuring about 500,000 light years across, comparable to the size of the halo surrounding the Milky Way. It contains more than 30 ...