Glossary term: 极光
Description: 极光是地球大气中呈现的弥散的多变彩色光，主要出现在极地地区。在北半球被称为北极光或极光，在南半球则称为南极光。极光的颜色从绿白色到红色，通常出现在大约100公里的高度，形成围绕地磁极的两个不规则极光椭圆。当来自太阳风或日冕物质抛射的带电粒子被地球磁层捕获，并被上层大气中的磁场集中到一起时，它们会沿着地球的磁场线向极地螺旋运动。带电粒子与大气中的原子和分子相互作用，产生极光的光芒。这种现象在太阳活动强烈时尤为显著。极光还在太阳系的其他行星上被也会被观测到，特别是在木星和土星上。
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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
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