Answer: auroraborealis

AnswerCrossword Clue
AURORABOREALISNorthern lights, in meteorology
AURORABOREALISLuminous phenomenon.
AURORABOREALISNature's show of "merry dancers."
AURORABOREALISCelestial sight.
AURORABOREALISSpectacular aerial display