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Astronomy Picture of the week (2012.9.06-2012.9.22) (11)

People's Daily Online)  09:58, September 22, 2012

Sunrise Analemma. An analemma is that figure-8 curve that you get when you mark the position of the Sun at the same time each day throughout planet Earth's year. (NASA/ TunçTezel )


【1】 【2】 【3】 【4】 【5】 【6】 【7】 【8】 【9】 【10】
【11】 【12】 【13】 【14】 【15】

(Editor:马茜、厉振羽)

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