赞一个 yangjj76 发表于 2012-12-22 00:46 static/image/common/back.gif
http://www.astronomy.com/en/Multimedia/Picture%20of%20Day.aspx
2012-12-21
涡状星系
M51是非常经典的星系,也是拍摄较多的星系之一了
http://www.nasa.gov/images/content/420970main_M51HST-GendlerMr_full.jpg
http://www.nasa.gov/images/content/420970main_M51HST-GendlerMr_full.jpg
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