The Phoenix Cluster's central galaxy is about 5.8 billion light-years away and should be mostly done with star formation.

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

The core of a massive cluster of galaxies appears to be pumping out far more stars than it should. Now researchers at MIT and ...

Kokoro Hosogi, a physics student at The University of Alabama in Huntsville (UAH), has achieved a rare honor for an ...

A galaxy cluster once thought to be “dead” is unexpectedly forming stars at an astonishing rate, challenging established ...

But astronomers previously discovered that the core of the Phoenix cluster appeared surprisingly bright, and the central galaxy seemed to be churning out stars at an extremely vigorous rate.

It’s essentially a giant cluster of galaxy clusters stretching approximately 1.3 billion light-years long—more than 13,000 ...

Data from the XRISM X-ray satellite provide unprecedented detail on how ionized plasma moves in massive galaxy clusters — a question with huge cosmological and astrophysical implications.