Astrophysicist Adam Frank guides us through the search for extraterrestrial life and questions we stand ready to answer. Everyone is curious about life in the Universe, UFOs and whether ET is out there. Over the course of his thirty-year career as an astrophysicist, Adam Frank has consistently been asked about the possibility of intelligent life in the universe. Are aliens real? Why haven’t we found them? What happens if we do? In A Brief Guide to Aliens, Frank, a leading researcher in the field, takes us on a journey to all that we know about the possibility of life outside planet Earth and shows us the cutting-edge science that has brought us to this unique moment in human history: the one where we go find out for ourselves. Drawing from his own work and that of other scientists studying the possibility of alien life, Adam Frank brings together the latest scientific thinking, data, ideas, and discoveries to equip us with the critical facts as we stand at what may be the last moment in human history where we still believe we are all alone. ‘With wit and brio, Frank separates current nonsense about aliens from the serious and fascinating search for extraterrestrial life.’ – Carlo Rovelli, New York Times bestselling author of Seven Brief Lessons on Physics