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The newfound LQC is composed of 73 quasars and spans about 1.6 billion light-years in most directions, though it is 4 billion light-years across at its widest point. To put that mind-boggling size into perspective, the disk of the Milky Way galaxy â home of Earth's solar system â is about 100,000 light-years wide.
Largest Black Hole. Black holes are not physically large regions of space. But when you include their mass, they are among the top competitors for the largest things in the universe. And quasar OJ287 is the largest black hole weâve spotted. Itâs estimated to be 18 billion times the mass of our sun and is a supermassive black hole located in the center of a galaxy.