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Could you elaborate on the potential occurrences one might encounter if they happen to traverse a wormhole? Could you describe what it might feel like, the potential physical effects, and any theoretical interactions with spacetime that might take place? Would it be possible to survive such an experience, and if so, what would the aftermath be like? Additionally, how does our current understanding of physics factor into our speculation about wormholes, and are there any theories or experiments that are exploring this fascinating concept further?