Discovery theme
Cases where perception, recall, testimony or later retelling materially affects what can be established.
UFOs & Aerial Phenomena
The crew’s visual report was real and professionally documented. Radar returns were intermittent and disputed, while darkness, cloud and uncertain distance made size estimates especially fragile.
UFOs & Aerial Phenomena
Westall securely records a large school disturbance and sincere aerial observations. The number, path and landing claims vary across sources, while no photograph or official recovery establishes an extraordinary craft.
UFOs & Aerial Phenomena
The Belgian wave combined sincere observations, institutional openness and an ambiguous radar episode. It did not produce a verified craft, and its reports likely include multiple stimuli.
UFOs & Aerial Phenomena
The Tehran incident rests on a contemporaneous military message reporting civilian observations, two intercepts and aircraft anomalies. The document is strong evidence that the episode was reported, but incomplete for reconstructing the lights or failures.
Folklore & Legends
Vanishing-hitchhiker stories are documented folklore rather than one verified recurring event. Their changing details, local authentication and older supernatural motifs reveal how a modern legend acquires credibility.
Disappearances & Unresolved Identities
Frederick Valentich’s recorded radio exchange is evidence of what he reported, not of what caused the disappearance. Disorientation, misidentification and accident remain plausible without recovered wreckage.
UFOs & Aerial Phenomena
The Lakenheath–Bentwaters incident combines multiple radar reports and an interceptor account, yet gaps in timing, weather and original records prevent a secure identification or extraordinary conclusion.
UFOs & Aerial Phenomena
The Washington sightings combined radar returns, visual reports and official alarm. Temperature inversions offer a plausible mechanism for some returns, but the heterogeneous evidence does not support one neat solution.
UFOs & Aerial Phenomena
The Socorro incident rests on a prompt police report and documented ground traces, yet neither the marks nor later theories securely identify what Lonnie Zamora saw.
UFOs & Aerial Phenomena
The 1896–97 mystery-airship wave mixed ambiguous lights, invention fever, jokes and newspaper storytelling. No verified machine accounts for the national narrative.
UFOs & Aerial Phenomena
The Exeter incident has named witnesses and a substantial official file, but no photograph or physical trace. “Unidentified” records insufficient resolution, not an extraordinary craft.
Occult & Psychical Research
The Fátima crowd event is historically documented, while its cause and religious meaning remain disputed. Testimony, expectation, optics and weather must be kept distinct.