extraterrestrial civilization theme

Human civilization encounters an alien civilization. Note: This theme is not used when any mere alien is featured unless that alien's whole civilization is referenced and discussed vis-à-vis human civilization.

15 total · 2 choice · 12 major · 1 minor

StoryLevelMotivation
ent1x01/02 choice Humans encountered new alien civilizations, like the Klingons and Suliban, and the first contact with the Vulcans was discussed.
ent1x09 choice Crew make first contact with middle age era civilization against the better judgment of T'Pol.
ent1x13 major Crew find alien civilization with two different hominid species coexisting.
ent2x22 major The Enterprise crew make first contact with a three-sexed species called the Vissians.
movie: Cat-Women of the Moon (1953) major A scientific expedition to the Moon encounters a dying civilization of Cat-Women.
movie: Earth vs. the Flying Saucers (1956) major Humans meet with the survivors of a disintegrated solar system who to Earth in flying saucers to conquer it.
movie: Forbidden Planet (1956) major The Krell were an advanced alien civilization that perished overnight 200,000 years ago.
movie: Ga-ga: Glory to the Heroes (1986) major We saw an alien society in which selected individuals are singled out as "heroes", allotted special privileges that induce them into committing crimes, which they are ultimately impaled for in live televised ceremonies.
movie: Inseminoid (1981) major A group of archaeologists and scientists were excavating the ruins of an ancient alien civilization on a distant planet.
movie: Killers from Space (1954) major Aliens came to Earth to conquer it.