This is what a pair of supermassive black holes about to collide looks like | Video
Posted at 21:50 ET (02:50 GMT) Wednesday, January 11, 2023 playing 0:54 Posted at 22:02 ET (03:02 GMT) Wednesday, January 11, 2023 0:40 Posted at 13:55 ET (18:55 GMT) Wednesday,…