The Big Bang is probably the most misunderstood idea in science — starting with the fact that it wasn't an explosion in space, but an expansion of space itself. We trace the evidence that the universe had a beginning, walk through what happened in the first few minutes, and are honest about the one question the theory pointedly does not answer.

You'll come away understanding why the galaxies are rushing apart, what the "afterglow" of the Big Bang is and how we detect it, why the theory correctly predicted the amount of hydrogen and helium in the cosmos, and what scientists mean — and don't mean — when they talk about the beginning of time.

Talking Science is sponsored by Kinsoft. Visit www.kinsoft.com.au

Further reading: Steven Weinberg's The First T ...