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.
化屋村原名“化屋基”,意为“悬崖下的村寨”,曾是一个被险峻山崖隔绝的偏远贫困山村。党的十八大以来,在精准脱贫政策推动下,化屋村迎来跨越式发展,2019年底贫困人口清零,苗寨旧貌换新颜。
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