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golden21c 发表于 2014-8-18 22:00:34

Watching the sun twist and turn

https://www.youtube.com/watch?v=DjhkFizV7CA&list=UU7c8mE90qCtu11z47U0KErg&index=57

wangjade 发表于 2014-8-20 18:09:35

Nature , 24 January 2013,
DOI: 10.1038/nature11772

A nature video production.

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