Horizon - Season 12 Episode 6
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.
First Air Date : 1964-02-04
Last Air date : 2024-07-22
Runtime : 57 minutes
Genre : Documentary
Cast :
Crew :
Quality : 
Subtitles :
- Season 12 : Episode 11975-01-20
- Season 12 : Episode 21975-01-27
- Season 12 : Episode 31975-02-10
- Season 12 : Episode 41975-02-17
- Season 12 : Episode 51975-02-24
- Season 12 : Episode 61975-03-10
- Season 12 : Episode 71975-04-07
- Season 12 : Episode 81975-04-14
- Season 12 : Episode 91975-04-21
- Season 12 : Episode 101975-04-28
- Season 12 : Episode 111975-05-05
- Season 12 : Episode 121975-05-12
- Season 12 : Episode 131975-05-19
- Season 12 : Episode 141975-06-02
- Season 12 : Episode 151975-06-09
- Season 12 : Episode 161975-06-16
- Season 12 : Episode 171975-06-23
- Season 12 : Episode 181975-06-30
- Season 12 : Episode 191975-07-07
- Season 12 : Episode 201975-07-14
- Season 12 : Episode 211975-07-21
- Season 12 : Episode 221975-07-28
- Season 12 : Episode 231975-08-04
- Season 12 : Episode 241975-08-11
- Season 12 : Episode 251975-08-18
- Season 12 : Episode 261975-12-29
