Quantum Mechanics

Could universes collide with each other?
Answered by Dr. Michio Kaku
  • Dr. Michio Kaku

    Dr. Michio Kaku

  1. Dr. Michio Kaku Theoretical Physicist and Author


    Einstein gave us this marvelous picture that the universe is a bubble. We live on the skin of this bubble. We're stuck like flies on flypaper to this bubble. The bubble is expanding. The new wrinkle on this is that perhaps there are other bubbles out there, other universes.

    This is called the multiverse Idea. It means that our so-called universe is really one bubble in a bubble bath of universes. These bubbles can sometimes collide and create a larger universe, that's called the Big Splat theory. Sometimes these universes can split and create what Stephen Hawking has called, Baby Universes. Or sometimes these universes can simply pop into existence and disappear. Think of a bubble bath where bubbles are constantly interacting with each other. That could be the Big Bang. The Big Bang could be nothing but the aftershock of two bubbles colliding, creating a larger bubble or perhaps the bubble fissioning and budding off a baby universe.

    More answers from Dr. Michio Kaku »

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