The Huge-LQG (Large Quasar Group)
The Huge-LQG is a possible structure that could be one of the largest in the known universe. Having originally been identified as the largest, the Hercules-Corona Borealis Great Wall is bigger at 10 billion light years.
The Huge-LQG consists of 73 quasars, a quasar being a class of active galactic nuclei is essentially a superheated region of gas and dust that surrounds a supermassive black hole typically being 10-10,000 times the size of the Schwarzschild radius of the black hole. The existence of this structure defies Einstein’s cosmological principal which states that at large scales, the universe is approximately homogenous (meaning that the fluctuation in matter density throughout space can be considered small). It’s around 9 billion light years away from us, has a length of 1.24 gigaparsecs which is 4.0443 billion light years and a solar mass of 6.1 quintillion (that’s 6.1 quintillion times the mass of our sun and our sun is approximately 2 nonillion kg’s)!