It is uncommon to discover not one, not two but three enormous black holes being fed in the same neighborhood of the universe ...

Three galaxies were found in the merger of a triple system, which was rare in itself, and might help observe hierarchical ...

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

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

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

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

Astronomers have confirmed the first known triple system in which all three galaxies host actively feeding, radio-bright ...

Astronomers noticed something odd while reviewing radio data from distant space. Three bright signals appeared close together ...