These ancient quasars shouldn't exist so soon after the Big Bang

According to ScienceDaily, astronomers have spotted thirty-one of the oldest known quasars, among them the two earliest ever detected, blazing from a time when the universe was only about six hundred seventy million years old. These objects are powered by supermassive black holes billions of times the mass of the Sun, and their sheer existence so soon after the Big Bang challenges scientists' understanding of how such enormous black holes could have formed that quickly.

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