Theoretical wormhole physics?

Posted on 2015-09-03 13:31:00 in Physics by LUIE

No need to tell me that wormholes likely don't exist, and if they do they are only on quantum level for short periods of time... I'd appreciate if the energy problem was put aside

So since the answers will only be speculations, there is no right or wrong answer. Just answer based on how you personally would rationalize it:

Would they have any gravity? Would surrounding objects gravitate near it, or would it just be massless and objects go through other means and forces than gravity?

Do they need a singularity to exist? Black holes do as collapsed masses, but could wormholes be the exact opposite?

Would traveling through them seem instantaneous? If not what would it look like?

What happens if a wormhole crosses through a black hole? Is that even possible, one opening being in a black hole while the other opening be outside of a black hole?

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