When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration shows the black hole of V404 Cygni feeding from a stellar victim as a more ...

In a remarkable breakthrough, astronomers have uncovered the first known triple system where three galaxies, each harboring an active, radio-bright supermassive black hole, are caught in the midst of ...

"Overall, it's not surprising that black holes should be in triples, but what's surprising is that this system held onto the outer star after forming the black hole." When you purchase through links ...