UAP
Unidentified Anomalous Phenomena. A neutral term for observations that remain unidentified after initial review.
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UAP glossary
Plain-English definitions for the language used in reports, document analysis and evidence assessment.
USO
An unidentified submerged object reported in or beneath water.
NHI
Non-human intelligence. A hypothesis or claim, not a conclusion established by the acronym itself.
Hemi-Sync
Audio techniques developed by the Monroe Institute to encourage synchronized patterns of brain activity.
Remote viewing
An experimental protocol in which a participant attempts to describe a distant or hidden target.
Chain of custody
The documented path showing who collected, stored, transferred and examined a piece of evidence.
Sensor artifact
An apparent feature produced by the camera, radar, processing system or compression rather than by the observed scene.
Parallax
Apparent motion created by a change in the observer's viewpoint, often important in aerial video analysis.
Declassified
Information officially removed from classification. Declassification confirms access status, not every claim in the file.
Unresolved
A case lacking enough evidence for a reliable identification. It is not proof of a specific extraordinary explanation.