Astronomers Use Optical Illusion to Unveil a Gargantuan Black Hole
Briefly

Astronomers just found another case of something out there bigger than a supermassive black hole: ultramassive black holes, which are the true behemoths of the Universe, clocking in at over 10 billion times the mass of our Sun.While there aren't any fundamental differences between supermassive and ultramassive black holes besides their size, scientists sometimes use the term to set apart the really big ones.
Read at Inverse
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