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Nova

Ancient Earth: Birth Of The Sky

Season 50, Episode 11 of 18

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?

More From this Series

Previously Aired

Day
Time
Channel
10/4/2023
9 p.m.
PBS 6
10/5/2023
2 a.m.
PBS 6
10/6/2023
2 p.m.
PBS 6
10/8/2023
7 a.m.
PBS 6
10/10/2023
8 p.m.
PBS 6 Plus
10/11/2023
3 a.m.
PBS 6 Plus
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