Sky & Telescope - December 2019
Sky & Telescope (S&T) is a monthly American magazine covering all aspects of amateur astronomy. The articles are intended for the informed lay reader and include detailed discussions of current discoveries, frequently by participating scientists. The magazine is illustrated in full color, with both amateur and professional photography of celestial sights, as well as tables and charts of upcoming celestial events.
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今日热帖
顶一下,感谢分享!
顶一下,感谢分享!
感谢分享,学习学习!
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