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美发布卡西尼飞船最后时刻科学成果：光环与小卫星
source link: http://tech.sina.com.cn/d/s/2017-10-26/doc-ifymzzpw2591274.shtml
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新浪科技讯北京时间10月26日消息，据国外媒体报道，土星拥有太阳系最美丽壮观的光环系统，这个光环系统的存在离不开几颗小卫星的“辛勤努力”——这些小天体的引力作用防止了土星光环中的微小颗粒逃逸扩散，从而帮助土星维持了其光环的完整性。这一成果只
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