extraterrestrial intelligence
Intelligent alien life
Extraterrestrial intelligence refers to intelligent life originating beyond Earth.
The term appears most often in scientific contexts discussing the possibility of such life and efforts to detect it: the search for extraterrestrial intelligence, SETI.
Whether extraterrestrial intelligence exists remains one of science's open questions.
The phrase is sometimes shortened to ETI.
Quest for cosmic signals
- radio telescopeAstronomical receiver for cosmic waves
- Drake equationFormula estimating detectable civilizations
- Fermi paradoxWhy no extraterrestrials yet?
- AreciboPuerto Rican radio observatory
biosignatures · technosignatures · interstellar communication · data analysis · habitable zone · golden record
Unidentified aerial craft
- UAPOfficial unexplained sighting term
- RoswellNew Mexico city, UFO-famous
- Area 51Classified Nevada test facility
- flying saucerDisc-shaped alien vehicle
abduction · crop circles · close encounter · disclosure · sighting · cattle mutilation · grey alien · tic-tac
Extraterrestrial being
- Star TrekSpacefaring TV franchise
- VulcanRoman forge god
- KlingonFictional warrior race
- War of the WorldsFictional extraterrestrial invasion narrative
Independence Day · District 9 · Solaris · 2001 · Sagan · H.G. Wells · first contact · mothership
Study of cosmic life
- xenobiologyStudy of alien organisms
- extremophileLife in harsh conditions
- habitable zoneRegion allowing liquid water
- biosignatureEvidence of living processes
carbon-based life · water world · Europa · Enceladus · Mars · Titan · exoplanet · abiogenesis
Star-encasing energy collector
- megastructureMassive artificial construction
- panspermiaLife spreads via space rocks
- generation shipMultigenerational interstellar spacecraft
Not yet discovered
- unexplainedNot yet clarified
- anomalyDeparture from the expected
- ancient astronautHypothetical prehistoric alien visitor
- inexplicableCannot be accounted for
SETI
Quest for cosmic signals
- radio telescopeAstronomical receiver for cosmic waves
- Drake equationFormula estimating detectable civilizations
- Fermi paradoxWhy no extraterrestrials yet?
Arecibo · biosignatures · technosignatures · interstellar communication · data analysis · habitable zone · golden record
UFO
Unidentified aerial craft
- UAPOfficial unexplained sighting term
- RoswellNew Mexico city, UFO-famous
- Area 51Classified Nevada test facility
flying saucer · abduction · crop circles · close encounter · disclosure · sighting · cattle mutilation · grey alien · tic-tac · whistleblower
E.T.
Extraterrestrial being
War of the Worlds · Independence Day · District 9 · Solaris · 2001 · Sagan · H.G. Wells · first contact · mothership · little green men
exobiology
Study of cosmic life
- xenobiologyStudy of alien organisms
- extremophileLife in harsh conditions
- habitable zoneRegion allowing liquid water
biosignature · carbon-based life · water world · Europa · Enceladus · Mars · Titan · exoplanet · abiogenesis · Goldilocks zone
Dyson sphere
Star-encasing energy collector
- megastructureMassive artificial construction
- panspermiaLife spreads via space rocks
- generation shipMultigenerational interstellar spacecraft
unknown
Not yet discovered
- unexplainedNot yet clarified
- anomalyDeparture from the expected
- ancient astronautHypothetical prehistoric alien visitor
- intelligencesmart, IQ, memory, bright, clever
- Alien Lifeextraterrestrial life, first contact, biosignatures, exobiology, SETI
extraterrestrial intelligenceangels
Divine winged messengers
demons · gods · spirits · divine beings · supernatural entities
extraterrestrial intelligenceartificial intelligence
Machines mimicking human thought
terrestrial, intelligence, intelligent, intelligently, unintelligent, intelligentsia, intellect, intellectual, intellectually