860 Million-Year-Old Quasar Had Already Amassed 1.4 Billion Times the Mass of the Sun

It wasn’t long after the Big Bang that early galaxies began changing the Universe. Less than a billion years later, they had already put on a lot of weight. In particular, their central supermassive black holes were behemoths. New images from JWST show two massive galaxies as they appeared less than a billion years after …