When galaxies collide, so do the supermassive black holes at the center of each galaxy. For the first time, astronomers have observed a triple collision of galaxies, which have sent their black holes on a collision course, according to a new study.
원문출처 : https://www.cnn.com/2019/09/25/world/three-colliding-black-holes-scn/index.html
원문출처 : https://www.cnn.com/2019/09/25/world/three-colliding-black-holes-scn/index.html