Unidentified flying object

Unidentified flying object (UFO) is the popular term for any aerial phenomenon that cannot immediately be identified. Most UFOs are identified on investigation as conventional objects or phenomena. The term is widely used for claimed observations of extraterrestrial spacecraft.


Unidentified flying object (UFO) is the popular term for any aerial phenomenon that cannot immediately be identified. Most UFOs are identified on investigation as conventional objects or phenomena. The term is widely used for claimed observations of extraterrestrial spacecraft.
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