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  1. Multiverse - Wikipedia

    Brian Greene's nine types of multiverses include quilted, inflationary, brane, cyclic, landscape, quantum, holographic, simulated, and ultimate. The ideas explore various dimensions of space, physical laws, …

  2. What is multiverse theory? - Live Science

    Aug 23, 2021 · Multiverse theory suggests that our universe, with all its hundreds of billions of galaxies and almost countless stars, spanning tens of billions of light-years, may not be the only one. Instead,...

  3. What Is a Multiverse? Theories of Multiple Realities

    Aug 21, 2025 · Out of the countless universes in the multiverse, only a small fraction would have conditions suitable for stars, planets, and conscious observers. We exist in one of them, not by …

  4. Multiverse | Definition, Types, & Facts | Britannica

    Jan 8, 2026 · Multiverse, a hypothetical collection of potentially diverse observable universes, each of which would comprise everything that is experimentally accessible by a connected community of …

  5. Here’s Why We Might Live in a Multiverse | Scientific American

    Mar 6, 2024 · Several branches of modern physics, including quantum theory and cosmology, suggest our universe may be just one of many. Humans live in a universe; that is a fact. Up for debate, …

  6. What is the Multiverse vs Parallel Universes / World Theory

    Dec 13, 2025 · There is a theory that there is an alternative universe where that decision was taken. The theory is referred to as the Megaverse, Multiverse, Parallel Universes, or Many Worlds Theory, …

  7. Multiverse Theory: Are Parallel Universes Real or Just Sci-Fi?

    Jan 16, 2025 · Is the multiverse theory real? Explore the science behind parallel universes, cosmic inflation, quantum mechanics, and what it means for life beyond our universe.

  8. What is the multiverse—and is there any evidence it really exists?

    May 4, 2022 · What is a multiverse? The multiverse is a term that scientists use to describe the idea that beyond the observable universe, other universes may exist as well.

  9. Everything You Need to Know About the Multiverse

    Apr 6, 2023 · In the multiverse, our universe is not the first bubble to arise, but merely one of an infinite chain of universes. Imagine a giant foam, like the top of a bubble bath.

  10. The Top Three Multiverse Theories: Many Worlds, Bubble Universes, …

    Apr 8, 2025 · Theoretical physics suggests a multiverse is a hypothetical grouping of multiple universes. This means that our Universe could be just one tiny universe in a much larger multiverse where …