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Horizon

2010-2011

Episode 3: What Happened Before the Big Bang?

Duration: 1 hour

First broadcast: on BBC HDLatest broadcast: on BBC Four HD

They are the biggest questions that science can possibly ask: where did everything in our universe come from? How did it all begin? For nearly a hundred years, we thought we had the answer - a big bang some 14 billion years ago.

But now some scientists believe that was not really the beginning. Our universe may have had a life before this violent moment of creation.

Horizon takes the ultimate trip into the unknown to explore a dizzying world of cosmic bounces, rips and multiple universes, and finds out what happened before the big bang. Show less

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