LET ME EXPLAIN! (I'm back :D)
Wormholes r portals that ca either take u to another place of the universe, or into another literal universe, to make a wormhole, u need a BLACK HOLE in the SAME line of a WHITE HOLE with nothing between them, no matter how far it is, they will connect and make a wormhole, let's just say that ur immortal to gravity and radiations and u don't need oxygen (which is impossible but just as an example) if u jump in a black hole, but u find urself in another place and u find behind u a white hole, then u entered a wormhole, and BTW u can't and by can't I mean CAN'T enter a wormhole from a white hole, only from a black hole, ANOTHER EXAMPLE! Its like ur nose, 1 hole inhales much air, and 1 hole ejects much air, the black holes r the inhalers, and white holes r the ejectors in a wormhole