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Astronomy pictures of the week (2012.12.2-12.8) (4)

（People's Daily Online）  08:06, December 10, 2012

The Gegenschein Over Chile. Is the night sky darkest in the direction opposite the Sun? No. In fact, a rarely discernable faint glow known as the gegenschein (German for "counter glow") can be seen 180 degrees around from the Sun in an extremely dark sky. (Photo/ NASA)


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（Editor：姚春、张茜）

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