If space is a vacuum and not a fabric made out of a material how do wormholes work? (Please avoid the pen through paper analogy)

Question

I’m struggling to understand how someone can create a hole in space if space is already a vacuum. I mean, you can’t create a hole in emptiness. So where does that leave wormholes?

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Answer 1

Wormholes are purely speculative. There is nothing that says that should exist and no evidence that they exist, so how they would theoretically work is meaningless. Regardless, you’re fundamentally misunderstanding how space works. A wormhole would, speculatively, link 2 distant regions in spacetime. That has nothing to do with space being a vacuum. Spacetime is not a literal fabric but it’s a thing that exists. Changing spacetime itself has no bearing on whether or not there is stuff in space.