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美国太空网评出二十大最精彩的彗星图片(图)(2)
2007-02-14 10:21:14 转载 　 【大 中 小】 发表评论
　　
13941713_2007021410221313918900.jpg

西彗星之尾一直以来，此彗星照片是最佳彗星之一，由业余天文学家约翰-罗伯得拍摄。此图片显示二条截然不同的尾巴。蓝色窄小的离子尾巴由气体组成，而白色宽大的尾巴由微小尘埃组成。
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