Astronomers have discovered the largest and brightest black hole ever seen -- an ancient monster with a mass about 12 billion times that of the sun -- that dates back to when the universe was less than 1 billion years old.
Astronomers have discovered the largest and brightest black hole ever seen -- an ancient monster with a mass about 12 billion times that of the sun -- that dates back to when the universe was less than 1 billion years old.
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