A newly discovered galaxy cluster, blazing with unexpectedly hot gas just 1.4 billion years after the Big Bang, is forcing ...

An international team of astronomers led by Canadian researchers has found something the universe wasn't supposed to have: a ...

A scorchingly hot galaxy cluster in the early universe has left scientists baffled. “We didn’t expect to see such a hot ...

Using the Anglo-Australian Telescope (AAT), astronomers have observed a nearby galactic globular cluster known as NGC 6569.

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

Astronomers have identified what they describe as "something the universe wasn't supposed to have" in a find that may rewrite ...

The Virgo cluster, despite being millions of light-years away, closest large galaxy cluster to Earth. The Virgo galaxy ...

NASA Hubble data show stripped gas surrounding edge-on galaxy NGC 4388 in the Virgo cluster, revealing ionized plumes and structural details from black hole activity and cluster interactions.

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

A newly revealed cosmic image shows two galaxy clusters colliding as one. Nicknamed the Champagne Cluster, it offers rare ...

The Champagne Cluster is a rare and beautiful example of two galaxy clusters smashing together. Its festive name comes from ...

A galaxy cluster discovered on New Year’s Eve in 2020 shines in a new image from NASA’s Chandra X-Ray Observatory ...