How to make travel in time like if or how to extend the size of wormhole? Or if the black hole can be used to travel in time so how to reach there in little time?

A wormhole is not really a means of going back in time, it's a short cut, so that something that was far away is much closer," NASA's Eric Christian wrote.

Although adding exotic matter to a wormhole might stabilize it to the point that human passengers could travel safely through it, there is still the possibility that the addition of "regular" matter would be sufficient to destabilize the portal.

Today's technology is insufficient to enlarge or stabilize wormholes, even if they could be found. However, scientists continue to explore the concept as a method of space travel with the hope that technology will eventually be able to utilize them.

"You would need some of super-super-advanced technology," Hsu said. "Humans won't be doing this any time in the near future."

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