- UFOS
- Airborne vessels depicted in a 16th-century woodcut by Hans Glaser
- Tabloid topics
- Saturn vehicles?
- Roswell crafts
- Dubious crafts
- Crafts in some unlikely stories
- Sci-fi craft
- Sci-fi vehicles
- Independence Day sights
- Eerie sightings
- 39-Down crafts
- Saucers
- Strange craft
- Sci-fi fleet
- ET vehicles
- Vehicles for 100 Across
- Mysterious sightings
- Faraway fleet?
- Mysterious hoverers
- They might be reported to AFB's
- Mysterious craft
- Blurry objects in tabloid photos
- Project Blue Book subject (4)
- Lights up?
- Lenticular clouds are often reported as them
- The so-called Phoenix Lights of 1997, e.g.
- Features of some doctored photos
- What E.T.s travel in
- ETs' vehicles
- Frequent tabloid fodder
- E.T. craft, maybe
- Flying saucers
- Sci-fi sightings
- ET transports
- Sci-fi saucers
- Tabloid saucers
- E.T. transports, perhaps
- Pies in the sky?
- Saucers in the sky
- Roswell sightings
- E.T.s' crafts, maybe
- Fleet from far away
- Night lights?
- Close Encounters of the Third Kind sightings
- Strange sightings
- Pluto platters?
- Alleged Roswell sightings
- Mysterious aerial sightings
- Mysterious sky sightings, for short
- Tabloid hoverers
- Vehicles in some close encounters, for short
- Area 51 sightings
- Fantastic Adventures topics
- Sci-fi subjects
- Some flashes in the sky, perhaps
- Falling Skies vessels
- Aerial anomalies
- Saucers in tabloid pics
- Sci-fi hoverers
- Sightings near Area 51
- Some "weather balloons," perhaps
- ET carriers
- ET's transportation
- The X-Files sightings
- Sky sightings, briefly
- They may carry E.T.s
- Saucers in the sky, briefly
- Twinkling hoverers, so some say
- Sci-fi regulars
- Controversial hoverers
- Roswell craft
- Skylights?
- Tabloid sightings, for short
- Ships from space, briefly
- Unsettling sightings
- Strange hoverers
- WWII foo fighters, e.g.
- Aerial enigmas
- Scary sightings
- Sci-fi ships
- Roswell sightings, briefly
- Area 51 phenomena
- Saucers in the air
- Sci-fi staples
- Crop circle makers, supposedly
- Some sky lights, to some
- Space saucers, briefly
- Usually fuzzy tabloid pics
- Sci-fi transports
- Tabloid craft
- What weather balloons may be mistaken for
- Alleged visitors
- Controversial sightings
- Eerie fliers
- ET vehicles, in theory
- Mysterious sci-fi ships
- Close Encounters hoverers, briefly
- Alien craft
- 59-Down carriers
- Some fuzzy tabloid pics
- Arrival vehicles, for short
- Alien conveyances
- ET rides
- X-Files sightings
- The X-Files sights
- Air Force enigmas
- Craft for ETs
- E.T. ships
- ET fleet
- Tabloid subjects
- Unexplained sightings
- Tabloid fliers
- Tabloid staples
- Alien vehicles
- Alien ships, perhaps
- Sci-fi fliers
- Tabloid fare
- Flying saucers, for example
- Craft for 73 Across
- X-Files subjects
- ET transporters
- Sci-fi sightings: Abbr.
- Sci-fi transport
- Sci-fi vehicles: Abbr.
- USAF coinage of '52
- X-Files investigations
- Airborne anomalies
- Sci-fi saucers: Abbr.
- Strange sky sightings: Abbr.
- Meteors, at times
- Sci-fi airships
- Sci-fi vehicles, for short
- Topic of the USAF's Project Blue Book
- Sci-fi film staples
- Video-game staples
- Supposedly seen saucers
- Mysterious sky sightings: Abbr.
- Saucers from space, for short
- Saucers in 9 Across novels
- Sci-fi saucers, for short
- Strange sightings, for short
- Overhead mysteries
- Independence Day fleet
- Some 61 Across creators, for short
- Fantastic craft
- Ships carrying ETs
- Sci-fi spacecrafts: Abbr.
- Abductors' craft, some say
- Sky lights, maybe
- Some saucers
- They might travel at warp speed
- Elusive craft
- Mercury vehicles?
- Warp drive vehicles
- Crafts for crop circle crafters?
- What humans came to Earth in, according to Raelians
- Hovering saucers, maybe
- Sky line creators, perhaps
- Space opera crafts
- Subject of a museum in Roswell, New Mexico
- Those flying objects, for short.
- Apparitional phenomena.
- Certain airborne items.
- Space mysteries
- Saucers, maybe
- Certain saucers
- Certain sightings: Abbr.
- Items in the firmament
- Saucers from Mars
- What's-its
- Sky sightings
- Celestial phenomena
- Saucers, to some
- Controversial saucers
- Strange sights in the skies
- Sky mysteries
- Phenomena of interest to the U.S.A.F.
- Sky sights
- Possible sky sightings
- Tabloid grist
- Saucers of a kind
- Sky sightings: Abbr.
- Saucers of a sort
- Skyway saucers
- Strange saucers
- X-Files topics
- Martian craft, maybe
- Night sightings
- Subjects of 58-Down investigations
- Abduction sites, supposedly
- Martians' ships, for short
- Subject of Project Blue Book
- Unaccounted-for radar blips
- ET's transports
- Subjects of a U.S. Air Force cover-up?
- Govt. secrets?
- Ships to a far-off place?
- Alien spaceships
- Some blinking lights, for short
- ETs' ships
- Some streaking lights, briefly
- Sightings the U.S.A.F. may investigate
- The X-Files fodder
- Aliens' craft, for short
- Project Blue Book subject
- They travel very long distances
- They're encountered in "close encounters"
- Potential hoax subjects
- They're involved in some reported abductions
- Area 51 holdings, supposedly
- Astounding Stories subjects
- They're seen but not recognized
- Abductees' destinations, in some hard-to-believe stories
- ETs pilot them
- Subjects of some 911 calls
- Hover craft?
- Subjects of a top-secret government cover-up, some believe
- Mysterious sightings that hover
- Supernatural tabloid fodder
- Old tabloid fodder
- Subjects of a Roswell museum
- Subjects of some fuzzy photos, for short
- Foreign dishes?
- Hovering craft
- Crafts in a "close encounter of the third kind"
- Causes of some 911 calls
- Sci-fi travelers, for short
- Some people believe swamp gas causes them, for short
- Subjects of some eerie videos
- Causes of some mysterious radar blips, in brief
- Interplanetary craft, for short
- Ships passing in the night?
- Vehicles in some tabloid photos
- Alien transports
- Sci-fi conveyances
- Popular tabloid subjects
- SETI subjects
- Focus of the U.S.A.F.'s Project Blue Book (1952-1969)
- Sightings of them can be reported on the Enigma app
- Subjects of Project Blue Book
- They're out of this world
- Typically, they turn out to be military aircraft
- Subjects of some dubious photographs
- NASA rockets, to space aliens
- Conspiracy subjects
- Saucers in sightings
- Subjects of some supposed government cover-ups
- Alien crafts
- Alien ships
- Sci-fi sights
- ETs' rides
- Sci-fi space vehicles
- Aliens' craft
- Unmanned Aerial Phenomena, briefly
- Hollywood haunters
- Tabloid vehicles
- The X-Files transports
- Wormhole ships
- 27-Across carriers
- Long-distance vehicles?
- Sources of some mysterious lights, perhaps
- Vehicles that may or may not be stored in Area 51: Abbr.
- X-Files vehicles
- Sci-fi crafts
- Weird sightings
- Sci-fi transportation
- Strange sky lights
- Unaccounted-for radar blips, maybe
- Tabloid subjects, often
- Tabloid subjects, sometimes
- Abduction vehicles, supposedly
- Some unexplained sightings
- Extraterrestrials' fleet
- Close-encounter crafts
- Weather balloons, to some viewers
- Sci-fi film vehicles
- Some conspiracy subjects
- Some vehicles in sci-fi movies
- Strange sky sightings
- Flying saucers, e.g.
- Strange vessels that take up space?
- Foreign vehicles?
- Unexplained vehicles
- Weird ships
- Spooky aerial sightings
- Vehicles for aliens, perhaps
- Intergalactic vehicles
- Sci-fi flyers
- Aliens' rides
- E.T. crafts
- Mysterious sky sightings
- Space force transports?
- Some saucers: abbr.
- ET's transportation: pl.
- The X-Files subjects
- Alien sightings
- Extra-terrestrial vehicles, for short
- Heavenly dishes?
- Sci-fi fodder
- Eerie sightings, briefly
- Sites for some abductees
- Some sightings: abbr.
- Mercury or Saturn vehicles?
- Abductors' crafts, some say
- Some strange sightings
- Oft-blurred images?
- Alien fleet
- Did I just see that? things
- Celestial sightings
- Crafts for ETs
- Hard-to-explain vehicles
- Things in some tabloid pics
- Discs in tabloid pics
- Tabloids hoverers
- Vehicles for ETs
- Mars Attacks! ships
- ETs' spacecrafts
- They go a long way
- Dishes in the tabloids?
- Subjects of many Skeptic articles
- Roswell sights
- Topics of some X-files
- Spooky sightings
- Fleet from afar
- Radar anomalies
- Whether they're up in the air is up in the air
- Anomalous craft
- Mystifying hoverers
- Star vehicles?
- Eerie hoverers
- Hovering flyers
- Independence Day craft
- Freaky flyers
- Eerie aircraft
- Cosmic craft
- Curious sightings
- Unexplained hoverers
- Freaky fliers
- Sky lights, of a sort
- Some sky lights
- Subjects of some grainy pictures
- Night light sources
- Vehicles that might be beamers?
- Some photographic blurs, supposedly
- Spooky crafts
