We know about the big bang theory that can explain how our universe came into being. But, what started the big bang? Alan Guth, a brilliant and now famous astrophysicist, came up with a theory of inflation (and we thought inflation only applied to economics!) 35 years ago that explains the beginning of the big bang. Now, we have evidence that supports his inflationary theory. He also supports the idea that the same phenomena can give rise to more universes or a multiverse.