Poster of Cast and Crew in Horizon - Season 12 - Episode 6 - The Planets

Horizon - Season 12 - The Planets (Episode 6)

Plot: 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
Episode Aired On:
Monday, March 10 1975
50 years ago