土星最大衛星泰坦 發現生命跡證

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土星最大衛星泰坦 發現生命跡證
更新日期:2010/06/06 02:55 陳文和／綜合報導
中國時報【陳文和／綜合報導】


英國《每日郵報》五日報導說，根據美國「國家航空暨太空總署」（ＮＡＳＡ）土星探測太空船「卡西尼號」（Cassini）傳回的資訊，科學家已發現土星最大衛星「泰坦」（土衛六）上存有外星生命的跡證。


泰坦有大氣層，且地表有山脈、湖泊與河流，被視為太陽系中與地球最相似的星體。


卡西尼號偵測、分析泰坦表面的複雜有機化學成分，發現泰坦表面的流體並不是水，而是甲烷。而科學家推測，甲烷是土衛六的生命體的基礎。


科學家相信，泰坦有原始的生命體在大氣層中呼吸，並且以泰坦地表可作為燃料的物質為食物。


科學家在《Icarus》期刊發表論文指出，氫氣經泰坦的大氣層向下流動，並在地表消失，這暗示可能有蟲類在呼吸。此外，科學家在《地球物理研究》期刊表示，泰坦地表缺乏一種特定的化學物，據信可能是被生命體消耗掉。


科學家認為，陽光與泰坦大氣層交互作用應會產生乙炔，然後下墜、覆蓋泰坦的地表，但卡西尼號並沒有偵測到泰坦地表有任何乙炔。


科學家結合前述兩個現象，認為是以甲烷為基礎的生命體存在的兩個必要條件，而當太陽提供的熱能與溫暖足夠時，泰坦生命體出現的過程會被啟動。

http://tw.news.yahoo.com/article/url/d/ ... 26ydj.html

什麼時候才會演化出納美人呢?好期待.....

[gucci37]

以前看 2100 太空漫遊系列，

假設有生命的，也是這個泰坦，

幻想成真了！地球並不孤獨！

[image]

以前看 2100 太空漫遊系列，

假設有生命的，也是這個泰坦，

幻想成真了！地球並不孤獨！

可能還是孤獨的......

偶看至少還要十億年才有高智慧生物出來



那時人類應該不在了吧..... （阿飄）

(有什麼方法可以幫甲莞生物快快演化嘛?送一台電視去泰坦? (偽可愛) )

[maybeyou]

以前看 2100 太空漫遊系列，

假設有生命的，也是這個泰坦，

幻想成真了！地球並不孤獨！

可能還是孤獨的......

偶看至少還要十億年才有高智慧生物出來



那時人類應該不在了吧..... （阿飄）

(有什麼方法可以幫甲莞生物快快演化嘛?送一台電視去泰坦? (偽可愛) )

將泰坦星納入健保 (爽)

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