Halloween is a time to be haunted by ghosts, goblins and ghouls, but nothing in the universe is scarier than a black hole.
원문출처 : https://www.cnn.com/2021/10/31/world/black-holes-scary-things-scn-partner/index.html
원문출처 : https://www.cnn.com/2021/10/31/world/black-holes-scary-things-scn-partner/index.html