George P. Hansen, "The Trickster and the Paranormal" (2001)
An unidentified flying object (abbreviated UFO, or U.F.O.) is the general descriptor for any unusual object (or phenomenon) sighted in the sky that cannot be readily identified by an observer. In the majority of cases, a UFO can be later identified and explained to have been a known phenomenon or more conventional object, such as an aircraft, cloud feature, or planetary body, while the few that cannot be so identified after the fact become the interest of ufologists. A multitude of theories to explain the origins of unidentified craft exist, including the popular extraterrestrial hypothesis and the interdimensional hypothesis.
In popular media, the term UFO will typically refer to an extraterrestrial spacecraft, as routinely depicted in television and film, which, in turn, has inspired hoaxes and media inspired sighting reports.
This category has the following 9 subcategories, out of 9 total.
Pages in category "Ufology"
The following 12 pages are in this category, out of 12 total.