aurora borealis
From Longman Dictionary of Contemporary EnglishRelated topics: Astronomyaurora borealisau‧ro‧ra bo‧re‧a‧lis /əˌrɔːrə bɔːriˈeɪləs, ɔː- $ -ˈæl-/ noun [singular] HAthe Northern LightsExamples from the Corpusaurora borealis• The sky was aflame with the aurora borealis, the eerily luminous northern lights.• The aurora borealis was like that, too.Origin aurora borealis (1700-1800) Modern Latin “northern dawn”