UFOs
Unexplained aerial phenomena
UFOs is the plural of UFO, an unidentified flying object—anything observed in the sky that the observer cannot explain.
The term originated in military and aviation contexts for unexplained aerial phenomena.
In popular culture, UFOs typically suggest alien spacecraft: He claims to have seen UFOs over the desert.
The singular doubles as an adjective: UFO sighting, UFO enthusiast.
Being from outer space
- abductionUnlawful seizure of person
- encounterUnexpected meeting or confrontation
- greyNeutral achromatic tone
- spacefaringAble to traverse cosmos
interstellar · astrobiology · xenobiology · lifeform · nonhuman · intelligent · cosmic · exoplanet
Hiding wrongdoing from public
- RoswellNew Mexico city, UFO-famous
- Area 51Classified Nevada test facility
- governmentAuthority over a state
- classifiedRestricted from disclosure
Men in Black · disinformation · whistleblower · secrecy · redacted · black ops · leak · hoax
One who saw events
- reportFormal written findings
- photographImage from a camera
- radarRadio-wave object detection
- pilotOne who steers aircraft
night-sky · hovering · luminous · fast-moving · trajectory · skywatching · aviation · telescope
Not yet clarified
- mysteriousBeyond easy comprehension
- anomalyDeparture from the expected
- unknownNot yet discovered
- enigmaSomething hard to fathom
phenomenon · baffling · inexplicable · paranormal · supernatural · cryptid · lights · USO
extraterrestrial
Being from outer space
- abductionUnlawful seizure of person
- encounterUnexpected meeting or confrontation
- greyNeutral achromatic tone
spacefaring · interstellar · astrobiology · xenobiology · lifeform · nonhuman · intelligent · cosmic · exoplanet · contact
cover-up
Hiding wrongdoing from public
- RoswellNew Mexico city, UFO-famous
- Area 51Classified Nevada test facility
- governmentAuthority over a state
classified · Men in Black · disinformation · whistleblower · secrecy · redacted · black ops · leak · hoax · disclosure
eyewitness
One who saw events
- reportFormal written findings
- photographImage from a camera
- radarRadio-wave object detection
pilot · night-sky · hovering · luminous · fast-moving · trajectory · skywatching · aviation · telescope · observatory
unexplained
Not yet clarified
- mysteriousBeyond easy comprehension
- anomalyDeparture from the expected
- unknownNot yet discovered
enigma · phenomenon · baffling · inexplicable · paranormal · supernatural · cryptid · lights · USO · interdimensional
- classic sci-fiAsimov, Isaac Asimov, Arthur C. Clarke, Clarke, Ray Bradbury
- UFO Loreflying saucers, alien abduction, alien abductions, close encounters, Roswell
- X-FilesMulder, Scully, FBI, Skinner, aliens
- Fringe Sciencecold fusion, perpetual motion, alchemy, astrology, phrenology
- sci-fiscience fiction, Star Wars, sci-fi, Blade Runner 2049, aliens
- spacecraftspacecraft, starships, spaceship, Voyager 1, rocket ships
UFOsmilitary jets
Armed jet-powered aircraft
helicopters · drones · weather balloons · everyday objects · satellites
- UFO sightingsReported observations of unidentified craft
- UFO cover-upHiding evidence of spacecraft
- UFO hunterSeeks unidentified aerial phenomena
- UFO documentariesFilms about unidentified craft
- UFO phenomenaUnidentified flying object events