The Great Nothing

The Boötes void, a.k.a the Great Nothing, is an enormous spherical region of space that has a very small number of galaxies. At nearly 330 million light-years in diameter, it is one of the largest known voids in the Universe. The scale of the void is such that if the Milky Way had been in the center of the Boötes void, we wouldn’t have known there were other galaxies until the 1960s. This void has opened space for many discussions of its origin, including the hypothesis of a Type III civilization in the Kardashev scale. It would be a galactic civilization that can control energy at the scale of its entire host galaxy.