Physicists argue from different perspectives for and against the idea of the existence of multiple universes.

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 h

The structure of the multiverse, the nature of each universe within it and the relationships among the various constituent universes, depend on the specific mul

One of the most controversial, cutting-edge ideas in cosmology—the possibility that there exist multiple parallel universes—in fact has a long history. Tom

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