A leading figure in the development of the new cosmology explains what it all means."One of the best science books I have ever read. Not only is Vilenkin one of the great pioneers in the subject of modern cosmology, but he is also exceptionally clear, wonderfully witty, and frequently full of wisdom." —Leonard Susskind, author of The Cosmic LandscapeAmong his peers, Alex Vilenkin is regarded as one of the most imaginative and creative cosmologists of our time. His contributions to our current understanding of the universe include a number of novel ideas, two of which—eternal cosmic inflation and the quantum creation of the universe from nothing—have provided a scientific foundation for the possible existence of multiple universes. In Many Worlds in One,Vilenkin joins another select group: the handful of first-rank scientists who are equally adept at explaining their work to nonspecialists. With engaging, well-paced storytelling, a droll sense of humor, and a generous sprinkling of helpful cartoons, he conjures up a bizarre and fascinating new worldview that—to paraphrase Niels Bohr—just might be crazy enough to be true."Many Worlds in One will open your mind to exponentially expanding universes that may lie just beyond our own." —Robert P. Kirshner, author of The Extravagant Universe