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　　10、在跳跃的颜色中烁烁发光的行星状星云(就像上面这颗)向人们描绘出垂死恒星的最后色彩。行星状星云实际上是一些即将消亡的恒星抛射出的气体外壳，在学术上与行星并没有什么关系。哈勃望远镜告诉人们，行星状星云就像雪花一样，没有任何两个是一样的。　

　　10.Glowing in vibrant colors, planetary nebulae, such as this one, represent the death rattles of dying stars. These nebulae, which are not technically related to planets, are gas clouds forced outward by a dying star. According to NASA, "Hubble's keen 'eye' disclosed that planetary nebulas are like snowflakes: no two are like." (编译：王高山)

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