File:Voyager_2_-_Tethys_-_3119_7858_2.png
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Voyager_2_-_Tethys_-_3119_7858_2.png (400 × 400像素,文件大小:74 KB,MIME类型:image/png)
摘要
描述Voyager 2 - Tethys - 3119 7858 2.png |
English: Voyager 2 obtained this image of Tethys on Aug. 25, when the spacecraft was 594,000 kilometers (368,000 miles) from this satellite of Saturn. This photograph was compiled from images taken through the violet, clear and green filters of Voyager's narrow-angle camera.
Tethys shows two distinct types of terrain--bright, densely cratered regions; and relatively dark, lightly cratered planes that extend in a broad belt across the satellite. The densely cratered terrain is believed to be part of the ancient crust of the satellite; the lightly cratered planes are thought to have been formed later by internal processes. Also clearly seen is a trough that runs parallel to the terminator (the day-night boundary, seen at right). This trough is an extension of the huge canyon system Voyager 1 saw last fall. This system extends nearly two-thirds the distance around Tethys. |
来源 | https://voyager.jpl.nasa.gov/galleries/images-voyager-took/saturn/ |
作者 | NASA/JPL |
许可协议
Public domainPublic domainfalsefalse |
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当前 | 2010年12月20日 (一) 06:41 | ![]() | 400 × 400(74 KB) | Xession | {{Information |Description={{en|1=Voyager 2 obtained this image of Tethys on Aug. 25, when the spacecraft was 594,000 kilometers (368,000 miles) from this satellite of Saturn. This photograph was compiled from images taken through the violet, clear and gr |
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