AdvertisementOpinionGood News, Bad News: The Universe Next DoorJanuary 09, 2013Marcelo GleiserfacebookEmailAn illustration shows the Earth's night sky 3.75 billion years from now, with the Andromeda galaxy (left) beginning to distort our own Milky Way as the two collide. While galactic collisions are eye catching, could something bigger be just over the horizon? (NASA/ESA)