The First Black Holes Astronomers are laboring to discover how the universe's first supermassive black holes were born

摘要

Surveys have uncovered roughly 50 quasars, brilliant hot-gas beacons powered by supermassive black holes, blazing only a billion years after the Big Bang. The black holes have masses of billions of Suns, comparable to the heftiest black holes we see today. To be so big so early, these titans must have grown to full size within 900 million years of the Big Bang.