Ultimate fate of the universe out a theory that has since come to be called the Big Bang theory of the origin of the universe. In 1948, Fred Hoyle set out his opposing Steady State theory in which the universe continually expanded but remained statistically unchanged as new matter is constantly created. These two theories were active contenders until the 1965 discovery, by Arno Penzias and Robert Wilson, of the cosmic microwave background radiation, a fact that is a straightforward prediction of the Big Bang theory, and one that the original Steady State theory could not account for. As a result, the Big Bang theory
The Big Bang Theory (season 3) The Big Bang Theory (season 3) The third season of the American sitcom "The Big Bang Theory" was originally aired on CBS from September 21, 2009 to May 24, 2010 with 23 episodes. It received higher ratings than the previous two seasons with over 15 million viewers. Season three started three months after the end of season two when the guys left for the North Pole. The third season saw the first appearances of future main cast members Melissa Rauch as Bernadette Rostenkowski in "The Creepy Candy Coating Corollary" and Mayim Bialik as Dr. Amy Farrah Fowler in the season