An unidentified flying object (UFO) is generally defined as any unexplained aerial phenomenon or flying object. While some UFOs end up having scientific explanations, many sightings remain unexplained due to limited evidence that is typically anecdotal eyewitness accounts. Culturally, UFOs are often associated with theories of extraterrestrial life or government conspiracies and are popular subjects of fiction.
3. An unidentified flying object, or UFO, in its most general
definition, is any apparent anomaly in the sky that is not
identifiable as a known object or phenomenon. Culturally,
UFOs are associated with claims of visitation by
extraterrestrial life or government-related conspiracy
theories, and have become popular subjects in fiction. While
UFOs are often later identified, sometimes identification may
not be possible owing to the usually low quality of evidence
related to UFO sightings (generally anecdotal evidence and
eyewitness accounts).
ARON L. IZUMINO