aurora borealis
Related Words
northern lightsauroramagnetosphereionosphereplasmaelectronprotonphotonmagnetismpolarityatmospherethermosphereoxygennitrogenexcitationionizationluminosityphosphorescencefluorescencespectrumwavelengthgreenredpurplevioletbluenightdarknessskyhorizonArcticAntarcticpolenorthlatitudeequatorastronomyastrophysicsgeophysicsmeteorologyspacecosmossunsolarearthterrestrialfluxparticleradiationglowshimmercurtainbandarccoronaphenomenonspectacleobservationtelescopecameraexposurewintercoldfrostsnowmidnighttwilightcelestialethervacuumenergycollisiondischarge