What would the first aliens we meet look like? Would they be found on a planet in our own solar system or orbiting a star far, far away? And for that matter, have they already visited? It's impossible to look up at the stars and not think about it: Are we alone in the universe? Books, movies, and television shows proliferate that attempt to answer this question and explore it. In this "humorous, accessible" guide (Publishers Weekly), Michael Wall treats that question as merely the beginning, touching off a wild ride of exploration into the final frontier. Not least, Wall asks the secondary question: What happens when we do discover life beyond Earth?