Discover the fascinating and cutting-edge science behind the greatest question of all: is there life beyond Earth? For millennia, we have looked up at the stars and wondered whether we are alone in the universe. In the last few years, scientists have made huge strides towards answering that question. In this book, comedian and bestselling science writer Ben Miller takes us on a fantastic voyage of discovery, from the beginnings of life on Earth to the very latest search for alien intelligence.