Astronomers have found a system of three supermassive black holes, all actively feeding, that appear to be combining into a ...

New observations reveal that the relationship between ultraviolet and X-ray light in quasars has changed over billions of ...

Leading X-ray space telescopes XMM-Newton and XRISM have spotted a never-seen-before blast from a supermassive black hole. In ...

A supermassive black hole residing within the Large Magellanic Cloud (LMC) - a satellite galaxy - is on a collision course ...

In a patch of sky about 1. 2 billion light-years from Earth, astronomers have found a cosmic rarity: three galaxies caught in ...

Galaxy mergers are not uncommon throughout the Universe; in fact, they're thought to be one of the major mechanisms whereby ...

A supermassive black hole in the spiral galaxy NGC 3783 just delivered an X-ray surprise that astronomers have never watched ...

This ancient dormant black hole didn’t just grow quickly—it may have shaped the galaxies around it. Representing 40% of its ...

Supermassive black holes, which can possess millions to billions of times the mass of our Sun, are believed to grow by consuming material and merging with other black holes during galactic collisions.

Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the ...

For the first time in the history of observations, astronomers have recorded the merger of three galaxies, each of which ...

Astronomers have found three supermassive black holes on a collision course in a rare cosmic event, situated nearly 1.2 ...