巨大黑洞可能是宇宙黎明时期的遗迹

AN UNUSUALLY massive black hole in the very early universe may be a kind of exotic, star- less black hole first theorised by Stephen Hawking. In August, Boyuan Liu at the University of Cambridge and his colleagues spotted a strange galaxy from 13 billion years ago, called Abell 2744-QSO1, with the James Webb Space Telescope (JWST). The galaxy appeared to host an enormous black hole, around 50 million times the mass of the sun, but it was almost entirely devoid of stars. “This is a puzzle, because the traditional theory says that you form stars first, or together with black holes,” says Liu. …