This is a book about universes. It tells a story that revolves around a single extraordinary fact: that Albert Einsteins famous theory of relativity describes a series of entire universes. Not many solutions to Einsteins tantalising universe equations have ever been found but those that have are all remarkable. Some describe universes that expand in size while others contract. Some rotate like a top while others are chaotically unpredictable. Some are perfectly smooth while others are lumpy. Some permit time travel into the past. Only a few allow life to evolve within them; the rest if they exist remain unknown & unknowable to conscious minds. Here in The Book of Universes we are confronted with the most fantastic & far-reaching speculations within the entire realm of science.