Science Questions

The big bang theory... what went bang?

Sun, 10th Dec 2006

Part of the show Dark Matter, Life on Mars and Galactic Collisions

Question

Andy on the A120 asked:

The big bang theory... what went bang?

Answer

That's a good question. Well the answer strangely enough is nothing. And that's the key. This point I mentioned briefly before about zero. If you think of nothing, nothing is actually a big balance between a big positive and a big negative. And if occasionally that little balance goes wrong, you go from nothing to something, very quickly indeed, and you get an awful lot of something in a very small place. And so in a very real sense of the word, the big bang sprang out of nothing.

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