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极地冰帽: Difference between revisions – Wikipedia

Line 74: Line 74: 美国宇航局2001年火星探测任务收集的数据显示,火星南部残留冰帽每年都会经历升华现象。最广为接受的解释是,火星轨道的波动导致了这些变化。<ref>{{cite web | url=http://news.nationalgeographic.com/news/2007/02/070228-mars-warming.html | archive-url=https://web.archive.org/web/20070302094717/http://news.nationalgeographic.com/news/2007/02/070228-mars-warming.html | url-status=dead | archive-date=2 March 2007 | title=Mars Melt Hints

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