Mimas, at the upper right, has an enormous impact crater on one side, and Tethys, at the bottom, has a huge rift zone called Ithaca Chasma that runs nearly three-quarters of the way around the moon.
右上角的是土卫一,在它上面的一边上,有着一个巨大陨石坑;底部的是土卫三,上面有一个巨大的、称为伊萨卡峡谷的裂谷带,它几乎占了该卫星绕行路线的四分之三。
Another moon, Telesto, orbits in front of Tethys, creating a grouping unique to the Saturnian system known as trojan moons.
较特斯提卫星,另外一颗土星卫星——土卫十三的轨道更加靠近土星,由它们共同创建出一组独特的土星卫星系,被称做“特洛伊卫星”。
The Cassini spacecraft snapped this shot in February as it swooped past Calypso, which trails behind the larger moon Tethys in roughly the same orbit around Saturn.
这张照片是在今年2月份,卡西尼号宇宙飞船从卡里索普上方快速飞过时拍摄到的。 卡里索普星的轨道在土星第二大卫星特提斯的后方,二者围绕土星旋转的轨道大致相同。
Saturn's moon Tethys passes between Cassini and distant Titan in this image acquired on October 17, 2009.
土星的卫星土卫三通过关于2009年10月17号获得这个图片与卡西尼和遥远的土卫六。
Saturn's moon Tethys passes between Cassini and distant Titan in this image acquired on October 17, 2009.
土星的卫星土卫三通过关于2009年10月17号获得这个图片与卡西尼和遥远的土卫六。
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