Within UAP Language
Within the UFO disclosure movement, one of the most significant language changes has been the shift from “unidentified flying object” (UFO) to “unidentified anomalous phenomena” (UAP). The change was not merely cosmetic.
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Introduction
Within the UFO disclosure movement, one of the most significant language changes has been the shift from “unidentified flying object” (UFO) to “unidentified anomalous phenomena” (UAP). The change was not merely cosmetic. Modern government and scientific programmes adopted UAP because they wanted a category broad enough to cover unusual observations across multiple environments, not just unidentified objects seen flying in the sky. Official definitions now include airborne events, objects moving between different environments, and even some submerged cases. The broader term also allows investigators to treat unusual sensor detections and anomalous events as part of the same reporting system, rather than limiting attention to a visually observed flying object. [AARO]aaro.milAARO HomeUnidentified Anomalous Phenomena (UAP) means (A) airborne objects that are not immediately identifiable; (B) transmedium obj… [AARO]aaro.milUS Government UAP-Related Program/Activity Reporttransmedium objects or devices; (C) and submerged objects or devices that are not immedi…
From unidentified aerial to unidentified anomalous
The older term UFO centred attention on an object that appeared to be flying. Even when investigators used the term in a neutral way, its wording implied a physical object in the air. As official reporting systems evolved, agencies increasingly encountered cases that did not fit that narrow description. Some involved unusual radar tracks, some involved multiple sensor systems, and some appeared to move between air, water and other environments. [DefenseScoop]defensescoop.comPentagon changes 'UAP' terminology as it looks to…Dec 19, 2022 — When Pentagon officials use the acronym “UAP,” they now m…
The shift first moved from “unidentified flying object” to “unidentified aerial phenomena”, which already widened the focus from a definite object to a broader phenomenon. In late 2022, US legislation and defence agencies expanded the meaning again to “unidentified anomalous phenomena”. Under the legal definition used by the US government, UAP includes unidentified airborne objects, transmedium objects and certain submerged objects. [AARO]aaro.milAARO Mission BriefUnidentified Anomalous Phenomena (UAP) are sources of anomalous detections in one or more domains (i.e., airborne…
NASA followed the same terminology. Its UAP programme notes that the agency uses “unidentified anomalous phenomena” to remain consistent with the National Defense Authorization Act, reflecting a broader category than purely aerial events. [NASA Science]science.nasa.govNASA ScienceUAP FAQsTo be consistent with the National Defense Authorization Act (NDAA), NASA refers to UAP as “Unidentified Anomalous Ph…
Airborne, sensor, transmedium and submerged reports
The practical difference becomes clear when looking at what modern reporting systems are designed to collect.
A traditional UFO report often began with a witness seeing something unusual in the sky. By contrast, a UAP report may involve:
- An unidentified object observed in the atmosphere. [Wikipedia]WikipediaUnidentified flying objectUnidentified flying objectUAP is sometimes expanded as "unidentified anomalous phenomenon". While technically a UFO refers to any unid…
- An anomalous detection recorded primarily by radar or other sensors.
- An object apparently transitioning between air and water.
- A submerged object displaying unusual characteristics.
- Events detected across several domains at once, such as air, sea and space. [AARO]aaro.milobjects that are not immediately identifiable; (B) transmedium objects or devices;. (C) and submerged objects…Read more… [AARO]aaro.milAARO HomeUnidentified Anomalous Phenomena (UAP) means (A) airborne objects that are not immediately identifiable; (B) transmedium obj…
The concept of “transmedium” is particularly important. Defence agencies use the term for objects or detections that appear to move between different environments, such as air and water, without the reporting system treating those as separate categories. This capability would sit awkwardly inside the older UFO framework because the phenomenon is not defined solely by flight. [C4ISRNet]c4isrnet.comPentagon renames UFO office, expands mission to include…Jul 20, 2022 — Transmedium typically refers to the ability of an objec…
The Pentagon’s All-domain Anomaly Resolution Office (AARO) reflects this broader approach in its mission. Rather than focusing only on aerial sightings, it is tasked with examining anomalous detections across airborne, spaceborne, seaborne and transmedium domains. [AARO]aaro.milUS Government UAP-Related Program/Activity Reporttransmedium objects or devices; (C) and submerged objects or devices that are not immedi…
Why broader wording changes what gets counted
Language affects data collection. When a reporting category expands, more kinds of events become eligible for inclusion.
Under a UFO framework, an investigator might reasonably ask whether a reported event involved an unidentified flying object. Under a UAP framework, the first question becomes whether an anomalous observation occurred, regardless of whether it involved a clearly visible object. This subtle shift changes what organisations collect, analyse and archive. [NASA Science]science.nasa.govNASA ScienceUAP FAQsTo be consistent with the National Defense Authorization Act (NDAA), NASA refers to UAP as “Unidentified Anomalous Ph…
For example, modern UAP investigations increasingly emphasise multi-sensor evidence. Scientific proposals for UAP research stress the importance of combining optical cameras, radar, radio-frequency monitoring, environmental sensors and other measurement systems to identify anomalies and distinguish genuine events from sensor artefacts. The focus is therefore on unusual observations across a data network rather than on a single eyewitness description of something flying overhead. [arXiv]arxiv.orgThe Scientific Investigation of Unidentified Aerial Phenomena (UAP) Using Multimodal Ground-Based ObservatoriesMay 29, 2023…
This broader scope also means that agencies can track incidents relevant to aviation safety, maritime operations, space monitoring and national security within one reporting architecture. AARO’s statutory mission explicitly treats anomalous detections as an all-domain problem rather than a purely aerial one. [AARO]aaro.milAARO Mission BriefUnidentified Anomalous Phenomena (UAP) are sources of anomalous detections in one or more domains (i.e., airborne…
Why the wider definition matters to the disclosure debate
For supporters of greater transparency, the broader UAP terminology creates a larger evidentiary universe. Disclosure discussions are no longer confined to reports of mysterious craft in the sky. They can also encompass unusual sensor detections, maritime incidents, space-domain observations and cases involving multiple environments. [AARO]aaro.milobjects that are not immediately identifiable; (B) transmedium objects or devices;. (C) and submerged objects…Read more…
At the same time, the wider category does not imply that more cases are extraordinary. Most reported anomalies are eventually linked to ordinary causes such as balloons, drones, aircraft, environmental effects or data-quality problems. What changes is the scope of what gets examined before a determination is reached. [WIRED]wired.comNASA Didn't Find Aliens-but if You See Any UFOs, HollerThe agency stressed the need to shift the conversation from sensationalism to science and eliminate the stigma associated with reporting…
The key distinction is therefore conceptual. UFO described an unidentified flying object. UAP describes an unidentified anomalous event or detection that may occur in the air, in water, in space, across multiple domains, or through a combination of sensors. That expansion is why modern official terminology is broader than the language that dominated earlier decades of UFO history. [AARO]aaro.milobjects that are not immediately identifiable; (B) transmedium objects or devices;. (C) and submerged objects…Read more… [AARO]aaro.milobjects that are not immediately identifiable; (B) transmedium objects or devices;. (C) and submerged objects…Read more…
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Endnotes
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Source: aaro.mil
Link: https://www.aaro.mil/Source snippet
AARO HomeUnidentified Anomalous Phenomena (UAP) means (A) airborne objects that are not immediately identifiable; (B) transmedium obj...
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Source: aaro.mil
Link: https://www.aaro.mil/Portals/136/PDFs/AARO_UAP_Program_Report_User_Guide-20231211.pdf?ver=dJtqTlbDr3HqkIVDW8MP4Q%3D%3DSource snippet
US Government UAP-Related Program/Activity Reporttransmedium objects or devices; (C) and submerged objects or devices that are not immedi...
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Source: science.nasa.gov
Link: https://science.nasa.gov/uap/faqs/Source snippet
NASA ScienceUAP FAQsTo be consistent with the National Defense Authorization Act (NDAA), NASA refers to UAP as “Unidentified Anomalous Ph...
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Source: defensescoop.com
Link: https://defensescoop.com/2022/12/19/pentagon-changes-uap-terminology-as-it-looks-to-investigate-unexplainable-sightings-across-all-domains/Source snippet
Pentagon changes 'UAP' terminology as it looks to...Dec 19, 2022 — When Pentagon officials use the acronym “UAP,” they now m...
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Source: c4isrnet.com
Link: https://www.c4isrnet.com/battlefield-tech/space/2022/07/20/pentagon-renames-ufo-office-expands-mission-to-include-transmedium-objects/Source snippet
Pentagon renames UFO office, expands mission to include...Jul 20, 2022 — Transmedium typically refers to the ability of an objec...
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Source: science.nasa.gov
Link: https://science.nasa.gov/uap/Source snippet
NASA ScienceUAP9 Jun 2022 — A study team to examine unidentified anomalous phenomena (UAPs) – that is, observations of events in the sky...
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Source: aaro.mil
Link: https://www.aaro.mil/Portals/136/PDFs/AARO_Mission_Brief_2025.pdfSource snippet
AARO Mission BriefUnidentified Anomalous Phenomena (UAP) are sources of anomalous detections in one or more domains (i.e., airborne...
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Source: science.nasa.gov
Link: https://science.nasa.gov/wp-content/uploads/2023/09/uap-independent-study-team-final-report.pdfSource snippet
NASA ScienceIndependent Study Team ReportUnidentified Anomalous Phenomena (UAP) are one of our planet's greatest mysteries. Observations...
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Source: arxiv.org
Link: https://arxiv.org/abs/2305.18566Source snippet
The Scientific Investigation of Unidentified Aerial Phenomena (UAP) Using Multimodal Ground-Based ObservatoriesMay 29, 2023...
Published: May 29, 2023
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Source: wired.com
Title: NASA Didn’t Find Aliens-but if You See Any UFOs, Holler
Link: https://www.wired.com/story/nasa-ufos-aliens-report-2023Source snippet
The agency stressed the need to shift the conversation from sensationalism to science and eliminate the [stigma]({{ 'stigma/' | relative_url }}) associated with reporting...
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Source: aaro.mil
Link: https://www.aaro.mil/Portals/136/PDFs/UAP_Program_Report/DD_3212.pdfSource snippet
objects that are not immediately identifiable; (B) transmedium objects or devices;. (C) and submerged objects...Read more...
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Source: defensescoop.com
Link: https://defensescoop.com/2023/10/18/dods-all-domain-anomaly-resolution-office-is-now-investigating-more-than-800-uap-cases/Source snippet
DOD's All-domain Anomaly Resolution Office confirms...18 Oct 2023 — None of those newly covered submissions referred to transmedium obje...
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Source: defensescoop.com
Title: following the pentagons lead nasa expands its official definition of uap
Link: https://defensescoop.com/2022/12/22/following-the-pentagons-lead-nasa-expands-its-official-definition-of-uap/Source snippet
Following the Pentagon's lead, NASA expands its official...22 Dec 2022 — NASA is broadening the scope of its definition of “UAP” to acco...
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Source: Wikipedia
Title: Unidentified flying object
Link: https://en.wikipedia.org/wiki/Unidentified_flying_objectSource snippet
Unidentified flying objectUAP is sometimes expanded as "unidentified anomalous phenomenon". While technically a UFO refers to any unid...
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Source: war.gov
Link: https://www.war.gov/UFO/Source snippet
Search. Search Search. Back; Home; Place Holder; News · Press Products... Trump's directive for transparency on U.S. government informat...
Additional References
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Source: war.gov
Title: department of war releases unidentified anomalous phenomena files in historic t
Link: https://www.war.gov/News/Releases/Release/Article/4480582/department-of-war-releases-unidentified-anomalous-phenomena-files-in-historic-t/Source snippet
Department of War Releases Unidentified Anomalous...8 May 2026 — Today, the Department of War announced the initial release of new, neve...
Published: May 2026
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Source: Wikipedia
Link: https://en.wikipedia.org/wiki/All-domain_Anomaly_Resolution_OfficeSource snippet
All-domain Anomaly Resolution OfficeAARO continues the collection and reporting of Unidentified Aerial Phenomena (UAP) incidents acros...
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Source: reddit.com
Link: https://www.reddit.com/r/space/comments/16ij6ui/nasa_shares_unidentified_anomalous_phenomena/Source snippet
NASA Shares Unidentified Anomalous Phenomena...... term Unidentified Flying Object (UFO), the... r/UFOs - NASA Administrator Jared Isaa...
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Source: nypost.com
Link: https://nypost.com/2024/11/14/us-news/pentagon-says-nearly-two-dozen-ufo-sightings-cant-be-explained-true-anomalies/Source snippet
The "all-domain anomaly resolution office" (AARO) identified 21 reports as "true anomalies" needing further investigation. Most sightings...
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Source: reddit.com
Link: https://www.reddit.com/r/UFOs/comments/1atpdk0/transmedium_objects_what_is_the_limit/Source snippet
Transmedium objects, what is the limit?: r/UFOsLet's say the story about some UFO/USO/UAP being "transmedium" in which craft move throug...
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Source: reddit.com
Link: https://www.reddit.com/r/nasa/comments/16ij1ym/nasa_has_released_the_unidentified_anomalous/Source snippet
NASA has released the Unidentified Anomalous...TIL that the US government no longer uses the term Unidentified Flying Object (UFO), the...
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Source: thedebrief.org
Title: key takeaways you need to know from the dods recent aaro [media]({{ ‘media/’ | relative_url }}) roundtable on uap
Link: https://thedebrief.org/key-takeaways-you-need-to-know-from-the-dods-recent-aaro-media-roundtable-on-uap/Source snippet
AARO, it stated that its mission to resolve UAP incidents “includes anomalous, unidentified space, airborne, submerged and transmedium ob...
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Source: facebook.com
Link: https://www.facebook.com/newshour/posts/the-us-in-2022-launched-the-all-domain-anomaly-resolution-office-aaro-as-part-of/1149122250416353/Source snippet
The U.S. in 2022 launched the All-Domain Anomaly...... (AARO). “This includes anomalous, unidentified space, airborne, submerged and tra...
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Source: taskandpurpose.com
Link: https://taskandpurpose.com/news/the-pentagon-new-office-wants-to-resolve-anomalies-like-ufos/Source snippet
The Pentagon's new office wants to resolve anomalies like...Jul 23, 2022 — The AARO has an expanded mission compared to the AOIMSG...
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Source: thenews.com.pk
Title: 1095061 unidentified what are uaps and why did we ditch the term ufos
Link: https://www.thenews.com.pk/latest/1095061-unidentified-what-are-uaps-and-why-did-we-ditch-the-term-ufosSource snippet
What are UAPs and why did we ditch the term 'UFOs'?28 Jul 2023 — The acronym UAP stands for "unidentified anomalous phenomena," a catch-a...
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