Galaxies might be separated by hundreds of thousands of light-years at the very least, but they do occasionally merge. During ...

Powered by supermassive black holes swallowing matter in the centers of galaxies, active galactic nuclei are the most powerful compact steady sources of energy in the universe. The brightest active ...

Three supermassive black holes igniting at once in a single system is one of the most extreme feeding frenzies the universe ...

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

Three merging galaxies host three active black holes, offering rare insight into galaxy and black hole growth.

Galaxies like our own were built billions of years ago from a deluge of giant clouds of gas, some of which continue to rain down. Now new calculations tie the rain of giant clouds of gas to active ...

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

In a groundbreaking discovery, astronomers have identified a unique trio of merging galaxies known as J1218/1219+1035, which is located approximately 1.2 billion light-years away from Earth. This ...

Blazars represent one of the most intriguing classes of active galactic nuclei, where relativistic jets are oriented close to our line of sight. This favourable geometry magnifies the observed ...