->'''Spaceship Captain''': "The High Court may sentence you to TORTURE!"
-->--''Series/MysteryScienceTheater3000'' In Unison: "TOR-CHAA!!!"

''Teenagers from Outer Space'' is a 1959 SF CultClassic SnarkBait BMovie written, directed and produced by Tom Graeff. A pair of men from outer space land their spaceship on Earth, and they decide that this is the perfect planet to begin a ranch for [[CallARabbitASmeerp gargons]] (i.e. [[{{Slurpasaur}} giant lobsters]]). The idealistic young crew member Derek makes a moral and legal objection when he sees there is already intelligent life on the planet, meaning that by their own laws they can't use this world. Then he makes an armed objection, attempting mutiny; he fails, and has to escape the wrath of his crew (after all, the high court might have sentenced him to...never mind) and flees to a small town nearby. There he meets Betty - the most Fifties girl in that Fifties world. Meanwhile, the brash [[KickTheDog dog kicker]] Thor is sent to capture him -- alive; it turns out that Derek's secretly the son of "Our Leader", even though family relationships don't really count on the homeworld anymore. Meanwhile, the gargons have grown huge and have to be destroyed.

Shot for $14,000, which in technical film terms, is no money at all even by '50s standards. [[SpecialEffectsFailure It shows]].

Played on a double-bill with ''[[Film/GodzillaRaidsAgain Gigantis, the Fire Monster]]'' during its theatrical run.

The movie is considered public domain and can also be unlocked in the game ''VideoGame/DestroyAllHumans''.

No relation to the {{Animesque}} [[TabletopGame/TeenagersFromOuterSpace role playing game]] of the same name.

For the ''Series/MysteryScienceTheater3000'' version, please go to the [[Recap/MysteryScienceTheater3000S04E04TeenagersFromOuterSpace episode recap page]].

!!''Teenagers From Outer Space'' contains examples of the following tropes:
* AliensSpeakingEnglish: They can read it, too.
* ArchEnemy: Thor is this to Derek. They didn't like each other even before the latter defected, and the former enthusiastically volunteers to pursue him.
* AttackOfThe50FootWhatever: Gargons, which are definitely not just lobsters
%% * AxCrazy: Thor.
* BBCQuarry: In America!
%% * BeardOfEvil: "Our Leader"
* BigBad: "Our Leader," TheEmperor of Derek's people.
* BittersweetEnding: [[spoiler:The invasion is thwarted and Earth is saved, but at the cost of Derek's life.]]
* BloodFromTheMouth: Thor, when he's shot.
%% * CallARabbitASmeerp: Gargons, as you can guess.
* CoolOldLady: The nurse! Defies Thor at risk to her own life, then leaps out of a moving car to escape.
* DisintegratorRay: That darn [[ILoveNuclearPower Atomic]] Disintegrator.
%% * DullSurprise: Most characters.
* {{Expy}}: Derek is clearly based on Klaatu from ''Film/TheDayTheEarthStoodStill1951'', an alien invader who gains sympathy for the Earth.
* FakeDefector: Derek fakes a FaceHeelTurn near the end when he learns of his heritage.
* FlyingSaucer: a very unique variation. The alien ship is basically a massive screw with a standard flying saucer as its head; when it lands, it drills into the ground until only the saucer part on top is visible.
%% * GiantEnemyCrab: The Gargon.
* TheHeroDies: [[spoiler:Derek is killed in the fleet crash.]]
* HeroicSacrifice: [[spoiler:Derek tricks the fleet bringing the Gargons to Earth into crashing to end the threat once and for all -- while he's at ground zero.]]
* HostageSituation: ''Hoo,'' boy. Thor ''alone'' probably takes over half a dozen people hostage over the course of the movie.
%% * HumanoidAliens: To an annoying extent.
%% * {{Jerkass}}: Thor.
* KickTheDog: The first thing Thor does is disintegrate a little puppy that was passing by. Then he kicks everyone else in the cast.
* LargeHam: King Moody was way into his role as Spaceship Captain!
* MrExposition:
--> '''Spaceship Captain:''' "You have concern for foreign beings over our mission to locate grazing land for our Gargan herds?"
* ANaziByAnyOtherName: The aliens see themselves as the supreme race, and the weak are seen as a threat to the gene pool.
* NeverTrustATitle: Despite the title and [[CoversAlwaysLie the posters]], nothing in the film even suggests the aliens are [[DawsonCasting supposed to be teenagers]]--even though Derek is the obviously youngest one, he's assumed by humans to be old enough to rent his own room.
* NoNameGiven: King Moody (better known as Ronald [=McDonald=]) as "Space Captain".
* OffscreenMomentOfAwesome: the film's climax contains a massive invasion fleet of hundred upon hundreds of spaceships menacingly hovering over the town, descending and crashing simultaneously in a massive, cataclysmic fireball...offscreen. It's obvious that they only built one prop UFO and had no way of depicting an explosion, so we just get characters ''talking'' about the fleet and hiding from the blast.
* OffTheShelfFX:
** Again, that darn Atomic Disintegrator, which was a plastic toy with sometimes-visible label.
** Also, one piece of equipment is an audio mixing board, with (yes) the label clearly visible. Dialogue tries to cover this up by calling it a "Tri-Dex Mixer".
* ParentalAbandonment: Despite Derek's romantic idealism of family, he's not yet been told that he is the son of "Our Leader".
* PublicDomainSoundtrack: Virtually all of the music used in the film is actually stock music from the Capitol production library, much of it composed by Spencer Moore.
* PuttingOnTheReich: "[[DoesThisRemindYouOfAnything We are the supreme race! We have the supreme weapons!]]
** "We have the supreme pizzas!"
* ScaryDogmaticAliens: Derek's people are blatant Space Nazis.
%% * SeeminglyWholesomeFiftiesGirl: Betty
* ShinyLookingSpaceships: The alien ships.
%% * SpaceClothes: The alien uniforms.
* SpinningPaper: Played straight, although the paper doesn't actually spin. The Gargon's silhouette is also superimposed on the paper.
* SpockSpeak: "Let us implement contractions."
* StrippedToTheBone: What the alien rayguns do to people.
* WhatMeasureIsANonHuman: Unlike the others, Derek cares for other species.