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词汇 Japetus
分类 英语词汇 英语翻译词典
释义

Japetus

中文百科

土卫八 Iapetus (moon)

（重定向自Japetus）
卡西尼号拍摄的土卫八的照片镶嵌图，显示了位于逆轨道方向球面的明面以及邻接于其右侧的部分暗面。
土卫八表面的合成图像地图
卡西尼区

土卫八又称为「伊阿珀托斯」（Iapetus或Japetus，希腊语：Ιαπετός），是土星的第3大卫星，同时也是太阳系中的第11大卫星，由乔凡尼·多美尼科·卡西尼于1671年发现。土卫八以其两半球面巨大的颜色差异而着称，而卡西尼号最近的发现则揭示了该卫星其他多处不寻常的特征，如其拥有一个环绕球体半圈的赤道脊。

英语百科

Iapetus (moon) 土卫八

（重定向自Japetus）
Size comparison of Earth, the Moon, and Iapetus.
Cassini mosaic of Iapetus, showing the bright trailing hemisphere with part of the dark area appearing on the right (the equatorial ridge is in profile on the right limb). The large crater Engelier is near the bottom; to its lower right can be seen the rim of a partly obliterated, slightly smaller older crater, Gerin.
Enhanced-color map (27.6 MB). The leading hemisphere is at the right.

Iapetus (/aɪˈæpᵻtəs/; Greek:Ιαπετός), or occasionally Japetus /ˈdʒæpᵻtəs/, is the third-largest natural satellite of Saturn, eleventh-largest in the Solar System, and the largest body in the Solar System known not to be in hydrostatic equilibrium. Iapetus is best known for its dramatic 'two-tone' coloration. Discoveries by the Cassini mission in 2007 revealed several other unusual features, such as a massive equatorial ridge running three-quarters of the way around the moon.
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