Biggest Black Hole in Universe Discovered - and it’s BIG

It threatens to gobble up all of creation, but rest easy, at least the behaviour of the largest known black hole, and that of a (slightly) smaller orbiting companion, are consistent with the observations Albert Einstein made in his theory of General Relativity.

Whatever gave birth to this monster can be real proud. The biggest black hole in the universe weighs in with a respectable mass of 18 billion Suns, and is about the size of an entire galaxy. Just like in the Arnold Schwarzenegger and Danny Devito flick “Twins”, the massive black hole has a puny twin hovering nearby. By observing the orbit of the smaller black hole, astronomers are able to test Einstein’s theory of general relativity with stronger gravitational fields than ever before.