BIG BANG-THE BEGINNING

The Big Bang theory is a cosmological theory of the early development of our universe. Discoveries in astronomy and physics have shown beyond a reasonable doubt that our universe did in fact have a beginning. Prior to that moment there was nothing; during and after that moment there was something: our universe. The big bang theory is an effort to explain what happened during and after that moment.

The Big Bang theory states that the universe emerged from a state of extremely high temperature and density in an explosive expansion that occurred around 13.3 to 13.9 billion years ago.