Why is space three-dimensional, and not two-dimensional, or four- or five- or more-dimensional? I mean the extended space dimensions, not the micro dimensions. Why does it have a certain number of dimensions at all?
Category Archives: Beyond Our Universe
My Favorite Concept for How the Universe Fits into Everything
What’s outside the universe? What’s smaller than the smallest thing in the universe? What was before the universe started, and what will come after? Here’s a possibility…
The fundamental particles in our universe could themselves be whole universes, and our universe could be one of the smallest things in another universe one level up. That could go on forever in both directions.
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The Ways Multiple Universes Could Be
Why do we care how many universes there are and how they’re arranged?
- We want to know!
- It would be amazing if there were multiple universes.
- The soft anthropic principle is most satisfying if there are many universes with different properties.
Very Universe 