Atheist please explain, what does exist at the edge of the universe..and the universe after that?

You are absolutely right, nothing comes from nothing. If you take time to do scientific research you will know how the beginning came to be. Just because we don't believe in GOD does not mean that we don't have a theory on how it all started. Watch the History Channel, you will find your answers there. The world is interesting because of diversity. If we were all the same and believed in the same things it sure would a very boring world wouldn't it?