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【笔记】Astronomy

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把所有的天文笔记都放在这里~


1楼2015-08-09 18:26回复
    白天有的时候会看到月亮
    Because the moon constantly orbits the earth, it’s sometimes overhead when the sun is out. Although the light from the sun makes it too bright to see stars and planets, the moon is close enough—and its reflected light is bright enough—that we can see it when the sun is out.


    2楼2015-08-09 18:27
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      所以是planned吗……


      3楼2015-08-09 18:27
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        They say this is Kuiper belt's reject


        5楼2015-08-09 18:32
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          6楼2015-08-09 18:33
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            奥尔特云
            they are bounded by sun's gravity and solar wind


            7楼2015-08-09 18:38
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              8楼2015-08-09 18:39
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                哈哈哈哈哈哈yes ur


                9楼2015-08-09 18:41
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