Michael Strauss, a professor of astrophysics at Princeton, dubbed the study of these quasars and black holes one of the biggest challenges faced by scientists today.
He said: “It is remarkable that such massive dense objects were able to form so soon after the Big Bang.
“Understanding how black holes can form in the early universe, and just how common they are, is a challenge for our cosmological models.”
But the study is crucial because it expands the number of known black holes from the earliest days of the universe.
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