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首页星系壁纸 A Lesson in Counting Stars

A Lesson in Counting Stars

星系壁纸

by NASA/JPL-Caltech/JHU

NASA Image Library · 公有领域（Public Domain）

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These two photographs were made by combining data from NASA Galaxy Evolution Explorer spacecraft and the Cerro Tololo Inter-American Observatory in Chile to learn that not all galaxies make stars of different sizes in the same quantities.

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