Terminology Last updated: 2/19/2024

Why did the government switch from using 'UFO' to 'UAP'?

The shift from “UFO” (Unidentified Flying Object) to “UAP” (Unidentified Anomalous Phenomena) represents more than a simple rebranding—it signals a fundamental change in how governments approach these encounters.

Evolution of Terms

UFO (1952-2020s)

  • Coined by the U.S. Air Force in 1952
  • Replaced earlier terms like “flying saucers” and “flying discs”
  • Became culturally associated with extraterrestrial speculation
  • Carried stigma that hindered serious investigation

UAP (2020-Present)

  • Originally “Unidentified Aerial Phenomena”
  • Updated to “Unidentified Anomalous Phenomena” in 2022
  • Encompasses objects in air, space, underwater, and trans-medium
  • Removes cultural baggage and encourages scientific inquiry

Why the Change Matters

1. Scope Expansion

UAP acknowledges that these phenomena aren’t limited to aerial observations:

  • Trans-medium objects moving between air and water
  • Submerged objects detected by sonar
  • Space-based detections from satellite systems

2. Scientific Legitimacy

The new terminology:

  • Reduces stigma for military/civilian witnesses
  • Encourages data-driven analysis
  • Facilitates inter-agency cooperation

3. National Security Framework

UAP reframes the issue as:

  • Potential foreign adversary technology
  • Flight safety concern
  • Scientific opportunity

Official Adoption Timeline

  • 2019: U.S. Navy implements UAP reporting guidelines
  • 2020: Pentagon establishes UAP Task Force
  • 2021: ODNI releases first public UAP assessment
  • 2022: Congress mandates All-domain Anomaly Resolution Office (AARO)
  • 2023: NASA independent UAP study team formed

Current Usage

While “UFO” remains common in public discourse, official channels now exclusively use “UAP” in:

  • Military reporting procedures
  • Congressional legislation
  • Scientific studies
  • International cooperation frameworks

The terminology shift represents a pivotal moment in legitimizing the study of anomalous phenomena, moving from fringe speculation to mainstream scientific and defense priorities.