UFOs & Aliens
Alien Abduction From Chambers Dictionary of the Unexplained
The alleged kidnapping of human subjects by the extraterrestrial occupants of UFOs.
Alien AutopsyFrom Chambers Dictionary of the Unexplained
A procedure claimed to have been carried out in secret on the bodies of aliens recovered from the remains of UFO crashes.
Ancient Astronauts From Chambers Dictionary of the Unexplained

A name given to hypothetical beings from outer space who it is suggested visited the earth and interacted with ancient peoples.
Close EncountersFrom Chambers Dictionary of the Unexplained
A term used to describe the quality of a UFO sighting, commonly, but not exclusively, based on the proximity of the UFO to the witness.
Extraterrestrial From Chambers Dictionary of the Unexplained

A word meaning simply ‘other than from the earth’ which is used in ufology to mean a being that is not from earth or is from another planet.

Extraterrestrial Life: Scientific QuotationsIn Gaither’s Dictionary of Scientific Quotations

If we could talk freely with intelligences existing on another world, having a history, social customs and laws, and religious faiths developed absolutely independently from those of this world our conversation would be not only one of surpassing interest to science and the humanities, but what a guide it might prove to statesmen and sociologists!
Out of Body ExperienceFrom The Penguin Dictionary of PsychologyA compelling sense that one’s mind or self has left one’s body and is located elsewhere, often experienced as being above the body, looking down on it.

UFO: TopicAn object or light reportedly seen in the sky whose appearance, trajectory, and general dynamic and luminescent behavior do not readily suggest a logical, conventional explanation.

UFO CommunityFrom Chambers Dictionary of the Unexplained
A generic term for the diverse group of people involved in UFO study.
The UFO PhenomenonFrom Encyclopedia of American Studies
An unidentified flying object (UFO) is the report of an object that remains unidentified after scientific analysis. The term unidentified flying object has come to mean, paradoxically, both an object that is truly unidentifiable and one that is thought to be extraterrestrial. The colloquial flying saucer still connotes an extraterrestrial craft.

UFO PhotographsFrom Chambers Dictionary of the Unexplained
Photographs which purportedly contain images of UFOs.
Unidentified Flying Object: TopicAn object or light reportedly seen in the sky whose appearance, trajectory, and general dynamic and luminescent behavior do not readily suggest a logical, conventional explanation.