Discovery theme
Radio, radar, audio, broadcast and astronomical signals whose origin or interpretation became central to the case.
Scientific Anomalies & Natural Phenomena
FRBs are established astrophysical events, not unexplained transmissions in the colloquial sense. Magnetars can produce them, while the population’s diversity and emission physics remain active research questions.
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
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.
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.
Scientific Anomalies & Natural Phenomena
A source-led guide to anomalous signals, from underwater sounds to radio bursts: how calibration, reference libraries and independent repetition separate useful evidence from compelling noise.
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.
Scientific Anomalies & Natural Phenomena
The Bloop was a real hydrophone recording, but not evidence of a giant animal. NOAA’s later Antarctic observations identified the same sound family in large icequakes.
Hoaxes, Misidentifications & Media
The 22 November 1987 intrusions interrupted WGN briefly and WTTW for about ninety seconds. An attacker probably overpowered microwave programme links; the FCC inquiry found no culprit.
UFOs & Aerial Phenomena
The Shag Harbour report generated RCMP and defence records because observers feared an aircraft crash. Searchers found no wreckage, missing aircraft or confirmed object.
Scientific Anomalies & Natural Phenomena
Vela 6911 detected an unexplained double flash on 22 September 1979. Official and scientific assessments disagreed over whether it marked a secret atmospheric nuclear test.