This is a big hole in the sky. Although you can't see it with the naked eye it actually covers almost 3 degrees of the sky, and to put that into perspective the full Moon covers about half a degree! Until recently no-one was sure how big or far away this void was but the latest calculations suggest it is 900 million light-years across and 8,000 million light-years away. So is the cosmological prinicple, which says that the universe is homogeneous and isotropic wrong? Is Big Big theory, which assumes it, wrong as well.?