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Continue to Chat'Ultra-Massive' Black Hole Found with Mass of 40 Billion Suns https://amazingstories.com/2019/09/ultra-massive-black-hole-found-with-mass-of-40-billion-suns/
'Ultra-Massive' Black Hole Found with Mass of 40 Billion Suns https://amazingstories.com/2019/09/ultra-massive-black-hole-found-with-mass-of-40-billion-suns/