Plural of UFO; unidentified flying objects or aircraft that cannot be immediately recognized or explained.
Acronym 'UFO' from 'Unidentified Flying Object,' popularized in the 1950s during widespread reports of strange flying phenomena. 'UFOs' is simply the plural form.
Most UFO sightings turn out to be weather balloons, military aircraft, or natural phenomena—but the U.S. government recently admitted some radar encounters remain unexplained, sparking scientific interest in what we genuinely don't understand.
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