Northern Lights
북극광 (Northern lights, 오로라)은 지구 북반구에서 볼 수 있는 대기의 발광 현상으로서
태양에 거대한 폭발 현상이 일어날 때 다량의 입자들이 지구 초고층 대기의 공기 분자와의
충돌하여 빛을 내는 현상이다.
자극(磁極)에 가까운 북반구와 남반구의 고위도 지방, 즉 극지방에서 볼 수 있기 때문에
극광(極光)이라고도 한다.
또 지구 이외에 목성,토성등에도 오로라가 있다.
북극광은 자연이 우리에게 보내는 가장 아름다운 선물 중 하나이다.
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