Quote Originally Posted by Panda
Einstein postulated the theory of curved space where if you travel in a straight line you end up back where you started from.
Yes.
Quote Originally Posted by Panda
That makes space like a big egg encapsulated and autonomous from whatever it is outside its shell boundary.
You don't need an outside in that theory. There is none for the 3(+1, the time)-dimensional universe.

So no giant chicken. Not even a giant chick.