When did Horizon Season 42 Episode 13 air?
Horizon Season 42 Episode 13 aired on September 8, 2005.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Has Stephen Hawking been wrong about the universe for the last 30 years? Horizon explores his latest theory.
Direct answers for episode-level questions and details.
Horizon Season 42 Episode 13 aired on September 8, 2005.
This episode runs for approximately 60 minutes.
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