Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 14 · Episode 7 ·
The Red Planet
This story by Horizon traces the efforts of astronomers and scientists through history to prove the existence of life on Mars.
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Episode 7 of season 14 of Horizon: “The Red Planet”. Aired 1977-03-04. Watch it online free on ZapFlix.