Recent testimonies before Congress and meetings with NASA have renewed interest in UAPs and UFOs. There are differences between UAPs and UFOs, especially related to potential proof of alien life. Here's everything you need to know about UAPs and UFOs — including what they stand for. The transition from using UFO to UAP was to better encompass a variety of phenomena and strange sightings. Bettmann/Getty ImagesUAP vs. UFOUFO — which stands for "unidentified flying object" — was coined by the Air Force in 1952.

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Persons: David Grusch's, Kenneth Arnold, Nev, John Locher, David Fravor, Ryan Graves, Graves, Fravor, UAPs, — Organizations: NASA, Service, Air Force, UAP, CNN, Department of Defense, Pentagon, Getty, Military, Navy, Force, AP, New York Times Locations: Wall, Silicon, San Diego, Roswell , New Mexico, Rachel