Two massive galaxy clusters are slamming into each other, and for once astronomers are not reconstructing the crash from the ...

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

A rare triple system was identified by astronomers about 1.2 billion light-years away from Earth. The system, known as ...

When studying local galaxy cluster Abell 3667, Anthony Englert GS, a Ph.D. candidate in physics, noticed something unique. Connecting the brightest galaxies in two small clusters within Abell 3667 was ...

Astronomers have spotted three merging galaxies where all central black holes are actively feeding and radio bright, ...

A galaxy hosting a quasar in the distant universe, right, jabs another galaxy with its beam of intense radiation as the two bump and collide. Two extremely distant galaxies appear to be ramming into ...

Two of the world's most powerful space telescopes have spied a "spooky pair" of galaxies in deep space, staring out like a pair of "blood-soaked" eyes — and just in time for Halloween. This pair of ...

Astronomers have for the first time spotted two galaxies in the throes of a deep-space “duel.”Related video above: The dark energy pushing our universe apart may not be what it seems, scientists ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Last month when scientists announced new ...