Glossary term: 泰坦
Description: 土衛六（泰坦）是土星最大的衛星。它比月球和水星都大，是太陽系中第二大的衛星。除地球外，土衛六是唯一已知表面有液態大洋、海和河流的天體。不過，這些都是由被稱為碳氫化合物的化學物質構成的。土衛六被認為有一個岩石核心和一個由水構成的冰殼。人們認為冰殼下的液態水可能孕育著生命。土衛六的大氣層很厚，主要由氮氣構成，這使得它在照片上看起來非常光滑。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This is an automated transliteration of the simplified Chinese translation of this term
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土衛六自然色彩圖像
Credit: 美國宇航局/噴氣推進實驗室/空間科學研究所 credit link
License: PD Public Domain icons
具有表面特徵的土衛六
Credit: 美國宇航局 / 噴氣推進實驗室 / 亞利桑那大學 / 愛達荷大學 credit link
License: PD Public Domain icons
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