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I heard about wormholes. I know that they are paths that can be got by contracting spacetime. But, how does a wormhole form?

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marked as duplicate by John Rennie general-relativity Apr 6 '15 at 14:00

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    $\begingroup$ Since nobody has yet seen a wormhole, you will only get guesses as to how they are formed, if they are even real. $\endgroup$ – LDC3 Apr 6 '15 at 13:41