extraterrestrials
Life beyond Earth
Extraterrestrials are beings from beyond Earth—life forms originating on other planets or in outer space.
The word appears most often in discussions of whether such life exists and whether it has visited Earth: Do you believe in extraterrestrials?
As an adjective, extraterrestrial describes anything originating outside Earth: extraterrestrial intelligence, extraterrestrial life.
Unidentified aerial craft
- aliensBeings from other worlds
- RoswellNew Mexico city, UFO-famous
- abductionUnlawful seizure of person
- conspiracyClandestine coordinated scheming
hoaxes · pseudoscience · cryptozoology · ufology · Area 51 · cover-up · skepticism · believers
Beings from other worlds
- invasionForcible entry into territory
- spacecraftVehicle for outer space
- mothershipPrimary vessel carrying others
- ray gunFictional beam-emitting weapon
Martians · xenomorph · Vulcan · Klingon · E.T. · close encounters · first contact · intergalactic
Study of cosmic organisms
- exoplanetsWorlds orbiting other stars
- SETIQuest for cosmic signals
- Drake equationFormula estimating detectable civilizations
- biosignaturesDetectable signs of life
Fermi paradox · habitable zone · microbial life · radio signals · Goldilocks zone · Europa · Kepler · technosignatures
UFO
Unidentified aerial craft
conspiracy · hoaxes · pseudoscience · cryptozoology · ufology · Area 51 · cover-up · skepticism · believers · sightings
aliens
Beings from other worlds
- invasionForcible entry into territory
- spacecraftVehicle for outer space
- mothershipPrimary vessel carrying others
ray gun · Martians · xenomorph · Vulcan · Klingon · E.T. · close encounters · first contact · intergalactic · humanoid
astrobiology
Study of cosmic organisms
- exoplanetsWorlds orbiting other stars
- SETIQuest for cosmic signals
- Drake equationFormula estimating detectable civilizations
biosignatures · Fermi paradox · habitable zone · microbial life · radio signals · Goldilocks zone · Europa · Kepler · technosignatures · panspermia
- beingsbeings, being, entities, entity, creatures
- aliensE.T., grey alien, aliens, grey aliens, grays
- space fictionscience fiction, spaceship, sci-fi, astronaut, space adventure
- offworldersMartians
- life formsorganisms, organism, lifeforms, animal, creatures
- sci-fiscience fiction, Star Wars, sci-fi, Blade Runner 2049, aliens
extraterrestrialsearthlings
Inhabitants of our planet
terrestrials · humans · humanity · Homo sapiens · world
- extraterrestrial lifeOrganisms existing beyond Earth
- extraterrestrial contactCommunication with beings from space
- extraterrestrial intelligenceNon-Earth cognitive beings
- extraterrestrial beingsLife from other planets
- extraterrestrial encountersInteractions with beings from space
- extraterrestrial spacecraftAlien-built vehicle for travel