중력파를 통해 확인된 거대 블랙홀 충돌 2018. 12. 7. 18:40 (Artist's impression of two black holes merging. Credit: SXS) (Graphic showing the masses of recently announced gravitational-wave detections and black holes and neutron stars. Credit: LIGO-Virgo / Frank Elavsky / Northwestern) 국제 과학자팀이 중력파를 통해 지금까지 가장 큰 블랙홀 ..