Record-breaking gravitational waves reveal that midsize black holes do exist
Spacetime ripples reveal the most massive and most distant black hole collision yet
![Colliding black hole illustration](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/09/090120_ec_ligo_feat.jpg?fit=1028%2C579&ssl=1)
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