Mysteries Department
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Questions

Research questions are the building block of our platform of scientific inquiry. Key questions are the ones at the heart of a mystery; every other question helps answer one of them.

5questions1answered0with no evidence yet
All mysteries
Hessdalen lights
Hessdalen lights2 key questions · 5 questions · 1 answered
Open the mystery
QuestionWhere it stands
KeyDo the Hessdalen lights include a natural phenomenon not yet explained, once known light sources are removed?
Most likelyNo; the lights are misidentified vehicles, aircraft, astronomical objects and instrumental artefacts
Was the recurrent blinking light of the 2002 EMBLA survey an anomalous light-ball or car headlights?
AnsweredCar headlights on a private road about 11.5 km away.
Why did reports fall from about 20 a week in 1981–1984 to about 10–20 a year?
Open3 answers, none ahead
KeyIf some lights are a natural phenomenon, what produces them?
Open7 answers, none ahead
Do the valley's conductive sulphide zones explain where the lights appear?
Open3 answers, none ahead