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猎户座大星云
释义
猎户座大星云
Encyclopedia
理学
发射星云
释
Orion nebula
猎户座大星云
位于猎户座的发射星云。用肉眼观察,猎户座中构成“宝剑”的有三颗星,中间一颗是较模糊的亮斑,它不是单颗星,而是一个星云,即猎户座大星云(星表编号为M42和NGC1976)。
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