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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.
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Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36。关于这个话题，同城约会提供了深入分析
资本市场当下“精神分裂”式的定价，恰恰暴露了这一焦虑的本质。，这一点在WPS官方版本下载中也有详细论述