Description: 太阳耀斑是太阳某一部分的短暂增亮。

太阳周围有一个复杂的磁场。有时，这个磁场会变得不稳定，发生结构的改变并释放出大量储存的能量。这会导致太阳大气局部加热，并使光球层的一小部分变亮。这也会导致巨量的粒子流被抛向太空（称为日冕物质抛射）。

大多数太阳耀斑对太阳亮度的改变是人眼难以察觉的，只有用太阳望远镜或监测太阳的太空望远镜才能看到。

如果太阳抛射的日冕物质离地球足够近，与地球磁场相互作用，就会引起地磁暴。

其他恒星也会产生耀斑（称为恒星耀斑），但由于我们看到的恒星是光点，只能看到恒星整体短暂变亮。

Related Terms:

• 极光
• 光球
• 太阳风
• 空间天气
• Sun
• 磁场
• 日冕物质抛射（CME）

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

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