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Space: 1999: 1x23

The Testament of Arkadia

The wandering Moon suddenly changes course and comes to a halt in the vicinity of a dead world. As Alpha’s power fails, the only hope for survival is to evacuate to the planet, which was ravaged by a nuclear war in the distant past. Searching for answers, a team is sent to the surface, where they discover the shocking truth of the origin of Mankind.

Space: 1999: Season 1 Episode 23
Feb. 12, 1976