# Can a person from different universe which has its “own different laws of nature”, can go into our past in our Universe? [closed]

Suppose There is a Universe, which has different laws of nature than ours galaxy and they have much greater speed of light than $$3* 10^8$$ m/s ,so some person from their universe visits our universe with their speed of speed of light, but since our universe have less speed light, then in our frame of reference, he is moving towards our past. Is it correct, or when he comes to our universe, he is bound to follow our laws of nature?

## closed as off-topic by Kyle Kanos, ZeroTheHero, John Rennie, stafusa, PM 2RingAug 14 at 10:09

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "We deal with mainstream physics here. Questions about the general correctness of unpublished personal theories are off topic, although specific questions evaluating new theories in the context of established science are usually allowed. For more information, see Is non mainstream physics appropriate for this site?." – Kyle Kanos, ZeroTheHero, John Rennie, stafusa, PM 2Ring
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• Laws of physics are universal – Kyle Kanos Aug 14 at 0:38
• In the multiverse theories I am aware of, other universes can have different particles and forces from ours, but constants like $c$ and $\hbar$ are the same across the entire multiverse. – G. Smith Aug 14 at 0:48
• ... or if they're not universal then we can't answer based on our own laws. – ZeroTheHero Aug 14 at 1:50
• How can we answer your question if the people in the other galaxy use their different laws? – Unique Aug 14 at 4:35
• Just curious. Did you read or hear somewhere that different galaxies can have different laws of physics? – m4r35n357 Aug 14 at 8:42