impact craters on earth - Astronomy版 - 未名存档

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Astronomy版 - impact craters on earth

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g****e
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http://deputy-dog.com/2007/09/16/impact-craters-on-earth/

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● Hunting for Marsquakes[zz]	● Astronomy Picture of Day: the Far Side of the Moon
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● Australe: A Mare on the Edge[zz]	● 大坑
● Astronomy Picture of Day: Mercury	● Astronomy Picture of Day: Analemma

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话题: craters话题: earth

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