Close Encounter: An event in which a person witnesses an unexplained phenomenon or object at close range.
CE-1 (Close Encounter of the First Kind): Sighting of a UFO within 500 feet that allows detailed observation.
CE-2 (Close Encounter of the Second Kind): A UFO event where physical effects are alleged, such as electronic interference or scorched earth.
CE-3 (Close Encounter of the Third Kind): A UFO encounter where occupants or aliens are observed.
CE-4 (Close Encounter of the Fourth Kind): An encounter involving human abduction by a UFO or its occupants.
CE-5 (Close Encounter of the Fifth Kind): Human-initiated communication with extraterrestrials.
Abduction: The alleged capturing of humans by aliens for experimentation or communication.
Rendlesham Forest Incident: A series of reported sightings of unexplained lights and UFOs near military bases in England in 1980.
Roswell: Site of a reputed UFO crash in 1947 in New Mexico, which has contributed extensively to UFO lore.
Crop Circle: Large geometric patterns created by the flattening of crops in a field.
Scientific and Investigative Terms
SETI (Search for Extraterrestrial Intelligence): Scientific endeavors to detect signals from alien civilizations.
Astrobiology: The study of the origin, evolution, distribution, and future of life in the universe.
Xenobiology: Hypothetical biology of alien species.
MUFON (Mutual UFO Network): An organization that investigates cases of reported UFO sightings.
Photon: A particle representing a quantum of light, discussed in advanced propulsion or communication technologies.
Quantum Mechanics: A fundamental theory in physics, sometimes applied to theoretical propulsion methods.
Speculative Concepts
Extraterrestrial: Originating from outside the Earth or its atmosphere.
Interstellar: Between or involving different stars.
Mothership: A large spacecraft believed to serve as a base for smaller alien craft.
Orb: Spherical light or object seen in the sky, often reported in UFO sightings.
Dimensional Travel: Theoretical travel between different dimensions or universes, suggested as a method for alien arrival.
Wormhole: A hypothetical passage through space-time that could connect distant points.
Conspiracy and Mythology
Men in Black: Individuals in dark suits claimed to harass or threaten UFO witnesses to keep them silent.
Area 51: A highly classified US Air Force base in Nevada, often associated with alien conspiracy theories.
Alien Autopsy: The supposed medical examination of an alien corpse, particularly associated with Roswell.
Ancient Astronauts: The theory that aliens visited Earth in antiquity and influenced human culture.
Disclosure: The release of government or authoritative data on UFOs or aliens.
Additional Phenomena and Terms
Anomaly: Something that deviates from what is standard, normal, or expected, often used to describe unexplained phenomena.
Implant: A device placed in an abductee's body, purportedly by aliens.
Telepathy: Communication between minds by some means other than sensory perception, often reported in alien encounters.
Hybrid: An organism believed to be a combination of human and alien DNA.
Artificial Intelligence: Intelligence demonstrated by machines, often discussed in the context of decoding alien signals or managing interstellar travel.
Skywatch: An organized attempt to observe and record UFOs or other aerial phenomena.
EVP (Electronic Voice Phenomena): Sounds found on electronic recordings interpreted as spirit voices, sometimes thought to be of alien origin.
Vortex: A whirling mass, like air or water, potentially used to describe teleportation or transport methods in alien theories.