Glossary term: 極光
Description: 極光是地球大氣中呈現的彌散的多變彩色光，主要出現在極地地區。在北半球被稱為北極光或極光，在南半球則稱為南極光。極光的顏色從綠白色到紅色，通常出現在大約100公裡的高度，形成圍繞地磁極的兩個不規則極光橢圓。當來自太陽風或日冕物質拋射的帶電粒子被地球磁層捕獲，並被上層大氣中的磁場集中到一起時，它們會沿著地球的磁場線向極地螺旋運動。帶電粒子與大氣中的原子和分子相互作用，產生極光的光芒。這種現象在太陽活動強烈時尤為顯著。極光還在太陽系的其他行星上被也會被觀測到，特別是在木星和土星上。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This translation is based on an older version of the English glossary term and definition
This is an automated transliteration of the simplified Chinese translation of this term
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