The most authoritative answer in 2024
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Benjamin King——Works at Google, Lives in Mountain View, CA
Astronomers have discovered the largest and most luminous 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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About “1 billion years、1 billion years、1 billion years”,people ask:
QuesHub is a place where questions meet answers, it is more authentic than Quora, but you still need to discern the answers provided by the respondents.