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What is beyond the universe?

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Quick Answer

It is impossible to know what lies beyond the universe. Our modern technology can only detect the light that has had the time to reach us, making it impossible to even estimate the size of our universe.

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Full Answer

There are several theories that attempt to speculate on the size of our universe, but some scientists have also theorized on what lies beyond our universe. The most prominent of these theories is called string theory, which postulates that our universe is just part of something scientists call the multiverse. This means that our universe is just a massive bubble of space-time, of near infinite size, amongst an infinite amount of other space-time bubbles. Though it is impossible to prove this, the string theory considers it possible that beyond our universe lies an innumerable host of other universes.

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