is-the-multiverse-theory-science-fiction-or-science-fact

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Is the multiverse theory science fiction or science fact?
Parallel universes could exist, whether cosmologists can prove it or not.
By Eric Betz | Published: Monday, December 14, 2020


Do we live in a multiverse? Daydreamers and science-fiction authors have pondered parallel universes for as long as scientists have described our own.
Our universe contains everything we know — from planets, stars, and galaxies to space and time itself. And it’s truly staggering in size, spanning some 93 billion light-years across, according to astronomers’ estimates. That’s more than our species could ever hope to explore.

But what if our universe isn't the only one? What if alternate universes are humming along undetected, right "next" to ours?



Cosmologists call this idea the multiverse, and there’s good reason to consider the concept. Indeed, many of the best scientific models for the creation of our universe actually depend on the existence of a multiverse.
The idea of a multiverse didn’t just get thrust onto society by imaginative sci-fi writers, it’s been born out of other premises, like string theory and quantum mechanics. Even the theory of cosmic inflation, which sits at the heart of astronomers’ current ideas about our cosmos, predicts the existence of a multiverse.