In physics, there are two great pillars of thought that don't quite fit together. The Standard Model of particle physics ...

Science Physics ‘Stranger Things,’ Parallel Universes, And The State Of String Theory A conversation with theoretical physicist Brian Greene By Corey Mueller Published Aug 10, 2016 10:07 PM EDT ...

The idea that our universe is just one in a ‘multiverse’ of parallel universes is increasingly gathering attention from cosmologists. But can we ever test the theory?

Some physicists claim the popular landscape of universes in string theory may not exist.

String theory says we may be living in a universe where reality meets science fiction: A universe of 11 dimensions, with parallel universes right next-door. An elegant universe composed entirely ...

So, physicists accept parallel universes, sure, but even in the wildly theoretical world described by string theory, there are rules — and Into the Spider-Verse breaks a big one.

Multiverses and parallel worlds are often argued in the context of other major scientific concepts like the Big Bang, string theory and quantum mechanics. Related: How big is the universe?

Greene explains that when he began studying string theory and parallel universes, it wasn't because he could one day measure energy at CERN or develop new mathematical equations.

The universes predicted by string theory and inflation live in the same physical space (unlike the many universes of quantum mechanics which live in a mathematical space), they can overlap or collide.

In a telephone interview conducted during his book tour, Greene addressed the suggestion that multiverse theory was an empty exercise, and explained why scientists have to take parallel universes ...