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 is an automated transliteration of the simplified Chinese translation of this term
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