I just recently read an article from Scientific American (May 2003 issue and on their website here). I'm curious to know if the theories in the article are, in fact, how many theoretical physicists feel about our universe. Essentially, the article claims that "the simplest and most popular cosmological model today predicts that you have a twin in a galaxy about 10 to the 10^28 meters from here." The article then goes on to claim that our "Hubble volume" (everything we can see) is actually a universe virtually swimming in an unending sea of other universes and there are several levels of universes layed upon this one (the sea of universes or as the writer calls it, the "Level I Multiverse"). Well, I can't really sum it up much more than that. (You'd have to read the article to get the full gist of it.) But my main concern was that they state several times that this is the "most popular cosmological model", which shocked me because I had never read/heard of it before. The fact that there is only a (rather LARGE) physical distance between "our universe" and another universe made me think that this would NOT be a fairly popular model. Any thoughts?