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Horizon

BBC TwoDocumentary · 62 seasons

7.5TMDB

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Season 2

Questions

Where can I watch Horizon?

Horizon streams on PBS.

How many episodes are in Season 2?

Season 2 has 24 episodes.

Episode roomHorizon S12 E6

Horizon · Season 12 · Episode 6

The Planets

Monday, March 10 · 60 min

By the end of 1974, Mars, Venus, Mercury and Jupiter had all been visited by spacecraft. For the first time scientists saw in sharp detail the continents, mountains, valleys and volcanoes of other worlds. Tonight's programme shows how these geological features give clues to the way the planets evolved; how they have helped scientists in their attempt to reach back 5,000 million years to understand the formation of the solar system itself.

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