搜索 - 科创

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组成它们的原子和微粒是星系演化的废料和漂流物——这儿，一个氧原子是由早已死去的红巨星内部的氦元素形成的，那儿，一个碳原子来自银河系不同区域的一颗富碳恒星的大气层，一个铁原子来自于更古老时候一颗质量巨大的超新星的爆发

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