Supermassive black holes usually sit like stationary engines at the centers of galaxies, sucking in everything around them.
원문출처 : https://www.cnn.com/2021/03/15/world/wandering-supermassive-black-hole-scn-trnd/index.html
원문출처 : https://www.cnn.com/2021/03/15/world/wandering-supermassive-black-hole-scn-trnd/index.html