unidentified flying object (UFO)


unidentified flying object (UFO)
Aerial object or optical phenomenon not readily explainable to the observer.

Interest in UFOs increased with developments in aeronautics and astronautics after World War II. A U.S. government panel investigating sightings in the 1950s reported that 90% coincided with astronomical or meteorological phenomena or sightings of aircraft, birds, or hot gases, sometimes under unusual weather conditions. Some remained unexplained, however, and in the mid 1960s a few scientists concluded that a small percentage indicated the presence of extraterrestrial visitors. This sensational hypothesis, promoted in the press, met with prompt resistance from other scientists. A U.S. Air Force UFO study begun in 1968 firmly rejected the extraterrestrial hypothesis, but a large fraction of the public, and a few scientists, continued to support it. UFO reports vary widely in reliability. The unaided eye is easily fooled; radar sightings of UFOs, more reliable in some ways, may fail to distinguish physical objects from meteor trails, rain, or thermal discontinuities and are subject to radio interference. See also SETI.

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Universalium. 2010.

Look at other dictionaries:

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  • Unidentified Flying Object (album) — UFO 1 UFO 1 Album par UFO Sortie octobre 1970 Enregistrement Jackson Studios, Wandsworth (Angleterre) Durée 39:05 Genre(s) Space Rock, Rock progressif …   Wikipédia en Français

  • Unidentified flying object (album) — UFO 1 UFO 1 Album par UFO Sortie octobre 1970 Enregistrement Jackson Studios, Wandsworth (Angleterre) Durée 39:05 Genre(s) Space Rock, Rock progressif …   Wikipédia en Français

  • unidentified flying object — also called  flying saucer        any aerial object or optical phenomenon not readily identifiable to the observer. UFOs became a major subject of interest following the development of rocketry after World War II and were thought by some… …   Universalium

  • unidentified flying object — noun a) Anything not readily explainable appearing to move through or be suspended in the air, primarily used to refer to objects that seem to be at least of small familiar aircraft size. Abbreviated UFO. The lights seen over the city last night …   Wiktionary

  • unidentified flying object — noun an (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins • Syn: ↑UFO, ↑flying saucer • Hypernyms: ↑apparition, ↑phantom, ↑phantasm, ↑phantasma, ↑ …   Useful english dictionary

  • unidentified flying object — I (Roget s IV) n. Syn. UFO, flying saucer, spaceship, alien craft. II (Roget s 3 Superthesaurus) n. UFO, flying saucer, *bogey …   English dictionary for students

  • unidentified flying object. — See UFO. * * * …   Universalium


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