Multiple universes

A new theory that interactions between parallel universes could explain all quantum behavior is gaining traction among physicists.

Ernst Mach, the Austrian physicist-philosopher of the late 19th century, famously denied the reality of atoms. “Have you ever seen one?” he mockingly asked of atom advocates. Today many scientists speak with similar derision about the idea that the visible universe is not alone, but rather is only one of many universes—a single bubble in a froth of cosmic carbonation known as the multiverse. You can’t see these other universes, so the idea is not testable, multiverse opponents allege…

The Multiverse is the overall massive collection of universes and timelines. The Multiverse consists of a very large number of universes, millions of which have been cataloged as universal streams. Together, these universes comprise everything that exists: the entirety of space, time, matter, energy, and the physical laws and constants that describe them. Between these streams, outside of time and space, exists the inter-dimensional void of transwarp. On a cosmic scale, travel between…

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What is the scientific basis for the popular science-fiction convention of multiple universes?

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The idea of multiple universes, or a multiverse, is suggested by not just one, but numerous physics theories. Here are the top five ways additional universes could come about.

Discover the latest scientific evidence for parallel universes, including theories like string theory and cosmic inflation. Explore the multiverse.