sky survey map
巡天图
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In July, astronomers from the Sloan Digital Sky Survey (SDSS), which aims to map out a million galaxies, published a research paper in which they superimposed their own galaxy-clustering data on Wmap's microwave data.
BBC: NEWS | Science/Nature | Dark energy tops science class
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