一旦贴上了「知识生产力工具」的标签，价格锚点自然随之变化——用来阳台晒太阳的折叠椅，卖五十块可能都嫌贵；但用来干活护腰的人体工学椅，花五千块也算是投资健康。
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That mismatch has puzzled astronomers for years. Getting answers would inform how researchers understand galaxies more broadly, and the heart of the Milky Way offers the only galactic center close enough for this type of intricate study.
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