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1921年12月1日

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1921年12月的天空

八月的神秘访客，以及关于彗星的一般性评论

作者：亨利·诺里斯·罗素

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More by Henry Norris Russell

This article was originally published with the title “The Heavens in December, 1921” in 大众科学 Magazine Vol. 125 No. 18 (December 1921), p. 136
doi:10.1038/scientificamerican1221-136

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