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Ancient Earth: Birth of the Sky

Season 50 Episode 11 | 53m 47s

Early Earth was a hellscape of molten lava and barren rock, bombarded by meteors, with no atmosphere at all. How did our familiar blue sky – the thin, life-giving band of gasses protecting our planet – come to be?

Aired: 10/03/23 | Expires: 12/01/23
National Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.
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