but things are not what they teach us—for the world is hollow, and i have touched the sky (11. 103)

First airing on this day in 1968, season three, episode eight of Star Trek: TOS, the Enterprise intercepts an asteroid on a collision course with the planet Daran V, only to discover it is a generation ship (see also) populated by descendants of the original crew unaware that their former homeworld of Yanda is no more, engulfed by a supernova ten thousand years ago, and within the confines of malfunctioning space craft, reliant on automation whose technology they no longer grasp and refer to as the Oracle. The principle officers on their away-mission are subdued by this life-support system, and as they recover from this introduction, they encounter an old man who confesses that he has climbed the mountains (see previously) of this world and things are not what they seem. Immediately his temples glow red and is terminated for his heretical thoughts, revealing that the Oracle dictates obedience devices be implanted in all members of the ship’s manifest to maintain the illusion. Ostensibly skirting the Prime Directive, Spock and Kirk (with a B-story of an ailing McCoy cured by the civilisation’s ancient records and an infatuation with the High Priestess) steer the vessel back on court to a rendezvous with its destination for a new home.