UFO or unidentified flying object, in the original, literal sense means any airborne object whose nature is not readily known.

Nowadays, the term UFO is generally used to mean those cases that are believed by some to be the spaceships of extraterrestrial aliens. As early examples were saucer-shaped, they are also known as flying saucers, a term originating in a claimed sighting of a UFO by Kenneth Arnold on June 24 1947, near Mount Rainier, Washington. This event is generally considered the beginning of modern UFO interest.

Articles in category "UFOs"

There are 81 articles in this category.

List of major UFO sightings A Abduction Phenomenon George Adamski Aetherius Society Alien implants Aliens From Space Allagash Abductions Aluminium wedge of Aiud Ancient astronaut theory Area 51 Kenneth Arnold B Black triangles Antonio Villas Boas José Bonilla Observation C Carson Sink Case Cattle mutilation Close Encounters of the Third Kind Close encounter Coalition for Freedom of Information Crop circle D Erich von Däniken The Disclosure Project Dulce Base E Executive Order 12958 Extraterrestrial hypothesis Extraterrestrial life in popular culture F Falcon Lake Incident

F cont. The Flying Saucers Are Real Foo fighter G Greys H Heaven's Gate (cult) Height 611 UFO Incident Hill Abduction Hollow Earth Budd Hopkins J. Allen Hynek I Ilkley Moor Alien Interdimensional hypothesis J Jacques Vallee K Kecksburg UFO Incident Kecksburg UFO incident John Keel Donald Keyhoe L Bob Lazar M John Edward Mack Majestic 12 Mantell Incident Maury Island incident Billy Meier Men in Black 2004 Mexican UFO Incident Military flying saucers The Mothman Prophecies Mystery airship O Iulius Obsequens

O cont. Order of the Solar Temple P Paranormal and occult hypotheses about UFOs Pascagoula Abduction Phantom rockets Project Blue Book Psychosocial Hypothesis R Raelism Rendlesham Incident Roswell UFO incident Roswell, New Mexico S Ray Santilli Schirmer Abduction Philip Schneider Zecharia Sitchin Whitley Strieber T Transit of UFOs U UFO conspiracy theory Ufology Ummo Unidentified flying object V Valentich Disappearance Varginha incident Raël W Chuck Wakely Incident Travis Walton abduction Z Zeta Reticuli