Is There a Twin Theory?

If you have two twins, and er, you can only have two twins. And when you bring them back together, a one of them has aged. So the one who's travelled has aged much less than the one who stayed on earth. The atomic clock thing proves that that would be the case. If you could get through a worm hole, you'd travel to a different region of time. You're in a position where you're in basily a stronger gravitational field, and that slows down time. Yes, yes. I loot down.