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 quietly in Canada, but managed to garner major success in later seasons. "The Big Bang Theory" is telecast throughout Canada via the CTV Television Network in simultaneous substitution with cross-border CBS affiliates. Now immensely popular in Canada, "The Big Bang Theory" is also rerun daily on the Canadian cable channel The Comedy Network. The season 4 premiere garnered an estimated 3.1 million viewers across Canada. This is the largest audience for a sitcom since the series finale of "Friends" (12.4 million viewers). "The Big Bang Theory" has pulled ahead and has now become the most-watched entertainment television show in Canada.