EntityQ1342583· pop 19· linked from 24 articlesHessdalen lightsSign in to saveunexplained light usually seen in the Hessdalen valley in NorwayConnectionsplasmaEntitywill o' the wispEntityalien abductionEntityPentagon UFO videosEntityIon acoustic waveEntityThe Age of DisclosureWorkheliumEntitygeographic coordinate systemEntityInternational Standard Book NumberEntityradonEntityscandiumEntitypoloniumEntityauroraEntityunidentified flying objectEntitydigital object identifierEntityquartzEntityInternational Standard Serial NumberEntitycombustionEntitymirageEntityalpha particleEntityCategoriesAtmospheric ghost lightsCollective UFO sightingsHoltålen MunicipalityUFO-related phenomenaUnsolved problems in physicsWeather lore