Beyond the cloud's unusual shape, scientists see the nebula as a freeze-frame in the life of a star facing its final act. Elderly stars shed their outer layers in bursts, creating shells of gas and dust that expand. By observing the nebula at different wavelengths, researchers can sort out what material was molted first, how fast the star is losing mass, and which phase of decline Webb has caught.
“华佗再造丸连续多年稳居中国中成药出口排行榜前列，实现了从‘走出去’到‘扎下根’的华丽蜕变。”广药集团董事长李小军说。
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