今日小满 | 藏在小满节气背后的天文密码

Group 1 - The core concept of the article revolves around the significance of the "Xiaoman" solar term in the context of ancient Chinese astronomy and its philosophical implications, highlighting the integration of natural observations and life wisdom in Chinese civilization [1][5][8] - The "Xiaoman" solar term is defined as occurring when the sun reaches a longitude of 60 degrees, marking a specific point in the solar calendar [3][10] - Historical records indicate that the complete system of the 24 solar terms was developed by the Warring States period, linking each term to various astronomical phenomena and agricultural practices, thus embodying the "unity of heaven and humanity" philosophy [5][8] Group 2 - The article discusses the evolution of the 24 solar terms from ancient texts, particularly the "Huainanzi," which first documented the complete system, emphasizing the meticulous astronomical observations made by ancient Chinese astronomers [3][10] - It highlights the discrepancy between the ancient and modern observations of the sun's position during the "Xiaoman" term, attributing this to the phenomenon of precession, which alters the relative positions of celestial bodies over time [10] - The article illustrates how the ancient Chinese astronomers' observations were not incorrect but rather reflect the changes in the celestial background due to the precession of the equinoxes, demonstrating the depth of their astronomical knowledge [10]