A distant quasar as a cosmic clock

Washington DC (SPX) Nov 06, 2020

Hungry supermassive black holes in the distant cosmos can help us understand what happened shortly after our universe lit up with its first stars and galaxies. New work now probes the most distant supermassive black hole we've seen, searching for more clues. Our early universe, starting just a few million years after the Big Bang, was a dark place. Space was filled with clouds of neutral h