The multiverse hypothesis: Is our universe the only one?

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In the past decades, the idea that our universe is only one of many, has become popular among physicists. If there are several universes, their collection is called the “multiverse”, and physicists have a few theories for this that I explain in this video.

First, there is Eternal inflation
Second, the String Theory Landscape
Third, Many Worlds
Fourth, the Simulation Hypothesis
And fifth, the Mathematical Universe.

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