Two large particle jets in the core of a distant galaxy likely represent two black holes in their final phase before merging.

Astronomers have spotted the most distant and brightest "space laser" ever seen, blasting out from a distant galaxy collision ...

Two massive galaxy clusters are slamming into each other, and for once astronomers are not reconstructing the crash from the debris long after the fact. They have caught the system in the act, with ...

An artist’s impression shows the giant spiral galaxy NGC 1365 as it collides and merges with a smaller companion galaxy, stirring up star formation and redistributing gas and heavy elements. Using a ...

Astronomers have detected the most distant and brightest "space laser," a megamaser, originating from a galactic collision ...