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  1. 22 de may. de 2024 · unidentified flying object (UFO), 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 researchers to be intelligent extraterrestrial life visiting Earth.

  2. 31 de may. de 2023 · El equipo conformado por los mejores expertos en seguridad aeroespacial y científicos del mundo dio detalles inéditos de los ovnis, ahora llamados Fenómenos Anómalos no Identificados (UFO). Una estrella fugaz brilla sobre el volcán Villarica y el lago Villarica, Chile. Fotografía de Jonathan Irish. Por Redacción National Geographic.

  3. An unidentified flying object ( UFO ), or unidentified anomalous phenomenon [a] ( UAP ), is any perceived airborne, submerged or transmedium phenomenon that cannot be immediately identified or explained. [2] Upon investigation, most UAPs are identified as known objects or atmospheric phenomena, while a small number remain unexplained.

  4. 14 de sept. de 2023 · 14 September 2023. By Brandon Livesay, BBC News. UFO on camera. A Nasa probe into hundreds of UFO sightings found there was no evidence aliens were behind the unexplained phenomena, but the...

  5. 13 de ene. de 2023 · U.S. Navy. The Pentagon's new office for investigating potential UFO sightings received hundreds of new reports in 2022, and while it can explain more than half of those events, a sizable chunk...

  6. Unidentified flying objects (UFOs) are airborne objects—or optical phenomena that seem like airborne objects—that an onlooker is unable to identify. UFOs first became a major subject of public interest after World War II, possibly sparked by the development of rocket technology.

  7. 31 de may. de 2023 · UFOs: Five revelations from Nasa's public meeting. 31 May 2023. By Mike Wendling,BBC News. Getty Images. American authorities have examined around 800 mysterious reports of unidentified flying...