no actually, thas not true when ur talkin about universes, physically, a universe has no end{this is understood as a fact in physics}, only in terms of energy can a universe have a limit, concepts like beginning and end dont work too well when ur talkin about an entire universe, since it was the universe itself that created these concepts, neway, if you kept on travelling in the universe, ud probably be in for an eternal ride {although it is believed by some physicists that if u kept on going INFINITELY in one direction in the universe, ud probably end up where u started, because u can not just bounce out of existance itself. n there isnt nething OUTSIDE the universe,