The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about ...

How could the Universe form such dense and extremely hot structures only 1.4 billion years after the Big Bang? This question ...

Galaxy clusters are formed by a dense packing of many galaxies, making them the most massive structures in the universe.

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

A group of about 1,000 stars known as the beehive cluster is swarming a sky near you. Here's when and how to see them.

Gas within the cluster, which existed merely 1.4 billion years after the Big Bang, is at least five times hotter than ...

Astronomers found a young galaxy cluster with unexpectedly hot gas, suggesting cosmic structures formed faster than once ...

The “Seven Sisters” of the Pleiades are part of a much larger complex that can help reveal our galaxy’s deep history ...

Raise a toast to another orbit around the sun with a new NASA image of sparkling galaxy clusters fittingly dubbed the ...

Most astronomers agree that young galaxy clusters should be relatively cool compared to older ones. But researchers recently ...

A small group of young researchers at the Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, have, through ...

The Beehive Cluster, a group of about 1,000 stars, will be visible to skywatchers throughout January. Here's how to see it in ...