The end of the universe is kinda like in Asteroids - when you go off one side of the screen you appear on the opposite side.
What good does that knowledge do us? Absolutely none! But it's fun to think that a waveform in 4 dimensional space is equivalent to a straight line in 4 dimensional space. No? Well thanks to Physics we learned the world is round, and now we know the universe is actually
flat!
Like in Asteroids.
Physicists are nuts, I tell ya.
edit: sorry, that should have read "a waveform in 4 dimensional space is equivalent to a straight line in 3 dimensional space"