Question

where is universe exit.

Answer 1

Heya mate,
really this is a very nice question.

For understanding the answer/solution of the question , i prefer you that watch a video or read an article of multiverse theory.

Some people believe that the universe is the biggest and nothing is bigger that that and it was believed by many early cosmologists too.
But after the publication of multiverse theory it was proved wrong. Now mostly every cosmologist and astrophysicists believe about the multi universes.

Now whats the multiverse theory?

i would prefer you to read an article or watch a video on this topic but now i am just shortly describing it.
According to this theory, there are more than a millions of universe. Each with different physical properties, number of dimensions etc.

So since Universe is not the biggest, it also exists/lie on something more bigger. Then what's that bigger thing???
That's the cosmos.
And the answer of your question is also cosmos.
According to cosmologists the biggest/largest thing / field / area is the cosmos.
Till today it is said as the biggest field, which consist each and every thing.
But no one knows the reality it's just a great assumption and it may be proved wrong by any other great mind in future.

Hope this helps,

Thank you

Answer 2

Universe never ends
In my opinion