If our universe is ultimately destined to perish, could we travel to another? This question, which has preoccupied cosmologists worldwide in recent decades, is at the center of the book 'Parallel Worlds' by renowned physicist and brilliant science popularizer Michio Kaku. Another universe, he writes, may be a millimeter away from us, but it is inaccessible, existing in hyperspace, beyond our four dimensions. How can we conquer this hyperspace, and is it even conceivable? Kaku sees such a possibility in the new theory of the Multiverse—a world formed by many universes, of which ours is just one among a great many. But to understand the future of cosmology, it is necessary to understand its past vicissitudes and the most important modern discoveries. And the reader is invited to this exciting journey right now.