![]() ![]() However, these observations are now of great use to modern astronomers. Chinese data accuracy is unsurpassed in the ancient world and was not overtaken by Western accuracy until the fifteenth century or, in some respects, not until the twentieth century.Ĭomets were observed in great detail because of their astrological significance. There are continuous records all the way through to the nineteenth century, using substantially consistent methods throughout. Records exist at least as far back as 613 BC, and records may have been kept for many centuries before this. Ĭhinese records of comets are the most extensive and accurate in existence from the ancient and medieval periods, and stretch back across three millennia. ![]() The page gives descriptions and illustrations of seven comets, from a total of 29 found in the document. Detail of astrology manuscript, ink on silk, 2nd century BC, Han dynasty, unearthed from Mawangdui tomb. ![]()
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