We kinda know what happens if you get sucked into a black hole because of math (spaghettification, what outside observers would see, etc); can the same be said about worm holes? Would you even notice if you passed through one? What would they look like? What would someone watching someone else go through a wormhole look like?
Can a physicist explain: does spaghettification destroy the object passing through by means of extreme elongation, or is it an external observation of extreme warping of the space, including the objects within it?