Record-breaking gravitational waves reveal that midsize black holes do exist
Spacetime ripples reveal the most massive and most distant black hole collision yet
Two black holes orbited each another, sending out ripples of gravitational waves (illustrated in blue and pink in this computer simulation) before merging to form the first definitive example of a midsize black hole.
Deborah Ferguson, Karan Jani, Deirdre Shoemaker, Pablo Laguna/Georgia Tech, MAYA Collaboration