A new study claims extraterrestrial civilizations might exist right here in our Milky Way galaxy, and not just one! via Unexplained Mysteries: The question of whether we are alone in the universe remains one of the biggest philosophical conundrums of our time. While it seems almost inconceivable that our civilization is alone in the cosmos, the fact still remains that we have yet to see any evidence to the contrary. Now though, a new study has put forward the notion that the Milky Way galaxy alone could be home to as many as 30 alien civilizations based on how intelligent life evolved on our own planet. "There should be at least a few dozen active civilizations in our galaxy under the assumption that it takes 5 billion years for intelligent life to form on other planets, as on Earth," said astrophysicist Prof. Christopher Conselice from the University of Nottingham. "The idea is looking at evolution, but on a cosmic scale." The study authors assumed that any given intelligent alien