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UFO and alien sightings.

This is a list of UFO sighting flaps and well-known individual UFO sightings. Included are also cases of alleged UFO and alien sightings and UFO abductions. Some UFO sighting cases are popularly known, and have become folklore. Other UFO sightings are more obscure, and known mainly to Ufologists and enthusiasts.

UFO sighting: close encounters of the first kind.

UFO sighting.
list of UFO sighting flaps and well-known individual sightings.

Close encounters of the first kind are defined by J. Allen Hynek as any UFO reported to have been within a maximum of 500 feet or less of the witness.

UFO sighting: Close encounters of the second kind.

Close Encounters of the Second Kind are defined by J. Allen Hynek as a UFO that leaves markings on the ground, causes burns or paralysis, frightens animals, or interferes with engines or TV or radio reception.

UFO sighting: Close encounters of the third kind.

Close Encounters of the Third Kind are defined by J. Allen Hynek as including a purported sighting of the occupants of a UFO. The movie Close Encounters of the Third Kind helped popularized this phrase.

UFO sighting: Close encounters of the fourth Kind.

Close Encounters of the Fourth Kind are defined as events where a human is abducted by a UFO.

UFO sighting: Close encounters of the fifth Kind.

Close Encounters of the Fifth Kind are defined by Steven M. Greer's CSETI organization as encounters that are joint, bilateral contact events produced through the conscious, voluntary and proactive human-initiated or cooperative communication with ETI.

UFO sightings at more than 500ft.

These are UFO sightings that occured where the witness was more than 500 feet away from the UFO.

Chapters about ufos below.

Other pages about ufo sightings and aliens.




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