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Dr Helen Czerski delves into the Horizon archive to chart the transformation of a little-known theory into one of the greatest scientific undertakings in history.
DIRECTOR
CAST
![](https://image.tmdb.org/t/p/w92/93xJKa708XKIwJbXmb2fVeSJ064.jpg)
Helen Czerski
Herself - Presenter
![](https://image.tmdb.org/t/p/w300/64Wzg1RmYD5WYaDU1kIFBqSdF2A.jpg)
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