Where do you have Space? By definition space is where you have nothing and there is space to place something. In general when we talk about space we mean the 'space' between objects in the universe. Normally there is no air or anything. With regards to the worm-hole, although the name could simply sugest a hole made by a worm I was assuming that you meant the science-fiction idea of a worm-hole. For this no one knows if you would need to squeeze through one like a worm or not.
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