Largest Black Hole
Quasar OJ287 is the largest known black hole in our universe.
It is estimated to be atleast 18 billion times larger than the mass
of our sun. The black hole is so massive that it could possibly
suck in our entire galaxy. The event horizon is 11x times the
diameter of neptune orbiting our sun. Researchers at the University
of Texas were able to discover this incredible black hole by using the