Are we alone in the universe? Perhaps not. The scientific community thinks it's possible that other life forms exist on other planets. Perhaps even other highly developed technological civilizations. In this book, Italian journalist Angela collects several pieces of the puzzle allowing us to better understand the origins of the universe, the formation of planets, the birth of life, the development of intelligent life forms. The same pieces let us asking if our Earth adventure can represent a model that's happened elsewhere.

A group of forty of researchers speaks about their researches and the studies that have induced NASA to prepare a plan for the search of extraterrestrial civilizations. The book touches also some of the arguments that more than often stimulate fantasy, trying a scientific explanation: travelling beyond the speed of light, space stations, UFOs, evolution and death of the Earth. It's a fascinating travel between molecules and galaxies, prehistory and future, to the search not only of other thinking beings, but perhaps of ourselves.