cosmology - Are all galaxies we see really our Milky Way? Any possibility?

There is a possibility for our universe to be the surface volume of a (higher-dimensional) hyperspace. So if this possibility is true,then is there also a possibility that the other galaxies we see are our own galaxy after light has completed revolution around the three dimensional boundary (surface volume).

Know that we see different shapes for different galaxies.This can be perhaps due to other reasons like-

1. 
   

   distance light travelled,

   
   


2. 
   
   

   the angle through which we look to see the other galaxy (possibly Milky Way) after it made any number of revolutions,

   
   


3. 
   

   the part of the other galaxy (possibly Milky Way) which we see,and

   
   


4. 
   

   some other properties of light and space.

   
   

Only our Milky Way galaxy is just one possibility

Another possibilities are the number of galaxies are far less than we see because we see the same galaxy several times due to curved space.

Any possibilities for the above statements to be true?