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suerri (25)in lonely • 11 months ago
独坐敬亭山
[唐] 李白
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suerri (25)in star • 11 months ago
历史文化常识：古人认为天上都有那些星星？
中国最早出现“天文”一词的文献是公元前4世纪成文的《易经·系辞》，其中有“仰以观于天文”之句。东汉思想家王充对天文、地理有相当深入的研究，他的解释是：“天有日月星辰谓之文”。中国古代天文学主要包括三方面的内容：观测天象、研制观测天象的仪器和装置以及研究、计算日月星辰的运行规律。星宿和二十八宿…
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