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主題: a postcard from Cassini 作者: peter 於 2018-05-15 22:29:33 a postcard from Cassini
https://astronomynow.com/2018/05/08/a-planet-its-rings-and-three-moons-a-postcard-from-cassini/ (https://mk0astronomynow9oh6g.kinstacdn.com/wp-content/uploads/2018/05/050718_saturn.jpg) |