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UFO

UFO

UFO (unidentified flying object) is a term for any aerial phenomenon whose cause cannot be easily or immediately identified by the observer. The United States Air Force, which coined the term in 1952, initially defined UFOs as those objects that remain unidentified after scrutiny by expert investigators. Most people are familiar with the term in relation to possible alien spacecraft sightings.

Top Questions Asked on ChaCha.com for UFO

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  1. Where was the first sighting of a UFO?

    The first sighting of a UFO was in 1886-08-12 by José Bonilla...

  2. When did the Roswell UFO incident take place?

    On July 2, 1947, witnesses in Roswell, New Mexico, saw a disc...

  3. How many ufo sightings a year?

    There are at least several thousand sightings reported each y...

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  5. If I got here on my ufo?

    Well, thank you for visiting Earth and for using ChaCha durin...

  1. Are ufos real?

    Maybe...a researcher remarked: "If they exist, they have show...

  2. Where was the first sighting of a UFO?

    The first sighting of a UFO was in 1886-08-12 by José Bonilla...

  3. Was the Jerusalem UFO sighting real?

    Although there appears to be several videos of the same UFO s...

  4. Are UFO's real?

    Many think UFO sightings are caused by the military doing tes...

  5. When was the ufo crash at roswell?

    The UFO crash at Roswell was in July 1947. The exact date and...

Top Questions Asked on ChaCha Mobile for UFO

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  1. How many Americans have seen a UFO?

    14 percent of Americans claims to have seen a UFO during thei...

  2. Are ufo s real?

    A UFO is technically just an unidentified flying object so th...

  3. Have there been any UFO sightings near Westford, Massachusetts?

    The last UFO sightings in Massachusetts was on May 8, 2010 in...

  4. What was the first alien/ ufo sighting?

    An unexplained event was 1st recorded in 1943. Military pilot...

  5. Has anyone ever seen an UFO?

    People from all over the world, have witnessed and been amaze...

  1. How many Americans have seen a UFO?

    14 percent of Americans claims to have seen a UFO during thei...

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  3. Are UFO real?

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  5. How many documented UFO sightings have there been in the last 4 years?

    Although it is hard to get an exact number, UFO sighting cont...

About UFO

The term UFO is generally synonymous for alien spacecraft and generally most discussions of UFOs revolve around this presumption. Some investigators now prefer to use the broader term unidentified aerial phenomenon (or UAP), to avoid the confusion and association that has become attached to UFO.

Studies have established that the majority of UFOs are observations of some real but conventional object—most commonly aircraft, balloons, or astronomical objects such as meteors or bright planets—that have been misidentified by the observer as anomalies, while a small percentage of reported UFOs are hoaxes. Only between 5% to 20% of anomalous sightings can be classified as unidentified in the strictest sense.

The possibility that all UFO sightings are misidentified known natural phenomena inspired some debate in the scientific community about whether scientific investigation was warranted for these sightings. Very little peer-reviewed literature has been published in which scientists have proposed, studied or supported extraordinary explanations for UFOs. Nevertheless, UFOs as a cultural phenomenon continues to be the subject of serious academic research and amateur investigators continue to advocate that UFOs represent real and unexplained events, whether or not they are associated with alien encounters.

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UFO