The biggest black hole in the universe might have just been found. It sits inside a galaxy whose light is distorted to such an extent by another galaxy in front of it that it appears like a horseshoe.

When you buy through links on our articles, Future and its syndication partners may earn a commission. A view of The Cosmic Horseshoe and its gravitational lens, in which an ultramassive black hole ...

Sometime in their cosmic lives, two gigantic black holes crashed into one another to form something even more monstrous: A black hole equal to the size of 240 of Earth's sun. Now, thanks to an ...