discover science

Eyes to the skies

作者：Thomas Hale 21st Century Teens staff

大胆求变的科学先驱开创天文史上划时代的壮举。

THE dark ages couldn’t last forever. Around the 16th century, European science got going again. At this time, people still believed that the Earth was the center of the universe (宇宙). They knew little about space.

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