What Is UAP?
UAP stands for Unidentified Anomalous Phenomena — the term officially adopted by the United States government to replace the more familiar UFO (Unidentified Flying Object). The shift in terminology reflects a broader scope of investigation that extends beyond aerial objects to include transmedium phenomena — objects or events observed moving between air, water, and space.
Why the Name Changed
The transition from UFO to UAP was driven by several factors. The term UFO had accumulated decades of cultural stigma, making serious discussion difficult in military, intelligence, and scientific communities. UAP was introduced to remove that stigma and encourage reporting from military personnel and pilots who may have previously hesitated to file reports. The word “anomalous” replaced “flying object” because many reported phenomena don’t behave like conventional aircraft and may not be objects in the traditional sense.
Government Recognition
The term gained official status through a series of landmark government actions. The establishment of AATIP (Advanced Aerospace Threat Identification Program) in 2007, the public release of military footage in 2017, and the creation of AARO (All-domain Anomaly Resolution Office) in 2022 all used the UAP framework. Congressional hearings beginning in 2022 further cemented UAP as the standard terminology in official discourse.
The Five Observables
AATIP identified five characteristics commonly associated with UAP encounters: sudden and instantaneous acceleration, hypersonic velocities without visible propulsion, transmedium travel, anti-gravity capabilities, and low observability or cloaking. These observables form the baseline criteria for distinguishing genuine UAP events from conventional aircraft or natural phenomena.
Current Status
UAP investigation is now an officially acknowledged function of the U.S. government through AARO, with regular reporting to Congress mandated by law. The ongoing disclosure process has shifted the conversation from whether UAP exist to what they are and where they originate — a question that remains unanswered.
Related Terms
UAP is connected to several other key terms in the field including NHI (Non-Human Intelligence), AARO (All-domain Anomaly Resolution Office), AATIP (Advanced Aerospace Threat Identification Program), and the Hynek Classification System (CE1 through CE5).