Could there be a doorway to the multiverse in our backyard? It's lucky you're here. But for a series of incredible coincidences and roads not taken, your life could be very different. The same goes for reality. We live in just one of many possible worlds. In others, dinosaurs still rule the Earth, the Russians got to the Moon first, time flows backwards and everyone is vegetarian. And that's just for starters. What if the laws of physics were different? If we really did live in a multiverse? If robots became smarter than us? If humans were wiped off the face of the planet? Join New Scientist on a thrilling journey through these and dozens of other incredible but perfectly possible alternative realities, thought experiments and counterfactual histories -each shining a surprising and unexpected spotlight on life as we know it.

The national bestselling author of The God Equation takes us on a thrilling journey to explore black holes and time machines, multidimensional space and the possibility that parallel universes may lay alongside our own. “A wonderful tour, with an expert guide.” —Brian Greene, New York Times bestselling author of The Elegant Universe Kaku skillfully guides us through the latest innovations in string theory and its latest iteration, M-theory, which posits that our universe may be just one in an endless multiverse, a singular bubble floating in a sea of infinite bubble universes. If M-theory is proven correct, we may perhaps finally find answer to the question, “What happened before the big bang?” This is an exciting and unforgettable introduction into the new cutting-edge theories of physics and cosmology from one of the pre-eminent voices in the field.

There was a time when 'universe' meant all there is. Everything. Yet, as Brian Greene's extraordinary book shows, ours may be just one universe among many, like endless reflections in a mirror. He takes us on a captivating exploration of parallel worlds - from a multiverse where an infinite number of your doppelg ngers are reading this sentence, to vast oceans of bubble universes and even multiverses made of mathematics - showing just how much of reality's true nature may be hidden within them.

Max Tegmark leads us on an astonishing journey through past, present and future, and through the physics, astronomy and mathematics that are the foundation of his work, most particularly his hypothesis that our physical reality is a mathematical structure and his theory of the ultimate multiverse. In a dazzling combination of both popular and groundbreaking science, he not only helps us grasp his often mind-boggling theories, but he also shares with us some of the often surprising triumphs and disappointments that have shaped his life as a scientist. Fascinating from first to last—this is a book that has already prompted the attention and admiration of some of the most prominent scientists and mathematicians.

A novel interpretation of quantum mechanics, first proposed in brief form by Hugh Everett in 1957, forms the nucleus around which this book has developed. In his interpretation, Dr. Everett denies the existence of a separate classical realm and asserts the propriety of considering a state vector for the whole universe. Because this state vector never collapses, reality as a whole is rigorously deterministic. This reality, which is described jointly by the dynamical variables and the state vector, is not the reality customarily perceived; rather, it is a reality composed of many worlds. By virtue of the temporal development of the dynamical variables, the state vector decomposes naturally into orthogonal vectors, reflecting a continual splitting of the universe into a multitude of mutually unobservable but equally real worlds, in each of which every good measurement has yielded a definite result, and in most of which the familiar statistical quantum laws hold. The volume contains Dr. Everett's short paper from 1957, "'Relative State' Formulation of Quantum Mechanics," and a far longer exposition of his interpretation, entitled "The Theory of the Universal Wave Function," never before published. In addition, other papers by Wheeler, DeWitt, Graham, and Cooper and Van Vechten provide further discussion of the same theme. Together, they constitute virtually the entire world output of scholarly commentary on the Everett interpretation. Originally published in 1973. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

From alternate realities to the multiverse, sci-fi tropes are part of our everyday lives. But are they even possible? Strange Science explores out-of-this-world theories and ideas that are grounded in reality.

A Spring/Summer Pick by: Goodreads * PopSugar * Frolic * SheReads * Culturess* The Nerd Daily * Alma * J-14 "For fans of Sarah Dessen and Rainbow Rowell, a moving story about loss and love and finding out who you really are.” - Paige McKenzie, New York Times Best Selling author of The Haunting of Sunshine Girl A sob-worthy yet hopeful novel that reveals how our choices define us and how no matter the road, love finds a way. Stevie Rosenstein has never fallen in love. Constantly moving from city to city for her father's job, she can’t allow herself to grow truly close to someone. The pain of leaving hurts too much. Until she meets Drew... And Shane. Drew and Shane have been best friends through everything. The death of Shane's dad. The separation of Drew's parents. No matter what happens, they always have each others' backs. But when Stevie moves to town, a simple coin toss alters the course of their year in profound and unexpected ways – a ripple effect that also produces devastating consequences. Told in dual timelines, debut author Jennie Wexler's Where It All Lands delivers a heartbreaking, Sliding Doors-esque novel about missed opportunities, second chances, and all the paths that lead us to where we are. "This book succeeds in creating all the feels." - Kirkus