中文翻譯:
在遙遠的宇宙中，有一顆名叫Titania的神秘大月亮！這裡的地形就像一個全是高聳山崖和深邃峽谷的地方。1986年，來自地球的太空探測器Voyager 2飛過這顆月亮，拍下了美麗的照片！Titania的地面有些地方跟另一顆名叫Ariel的月亮相似，這意味著Titania在很久以前可能經歷過一些劇烈的事件，比如水結冰膨脹了。雖然Titania是天王星的最大月亮，但她的半徑卻只有海王星最大月亮Triton的一半，而Triton又比地球的月亮還要小一些。Titania是在1787年由威廉·赫希爾發現的，她是一個大大的脏冰球，裡面有一半是水冰，一半是岩石！最近有科學家猜想，也許有人造的熱能能把地下冰融化成海洋呢！
原文:
Titania’s tortured terrain is a mix of canyons, cliffs, and craters. NASA’s interplanetary robot spacecraft Voyager 2 passed the largest moon of Uranus in 1986 and took the feature picture. That the trenches of Titania resemble those on another moon of Uranus, Ariel, indicate that Titania underwent some violent surface event possibly related to water freezing and expanding in its distant past. Although Titania is Uranus’s largest moon, it is only about half the radius of Triton – the largest moon of Uranus’s sister planet Neptune, which itself is slightly smaller than Earth’s Moon. Titania, discovered by William Herschel in 1787, is essentially a large dirty iceball that is composed of about half water-ice and half rock. There is recent speculation that radioactive heating melts some underground ice into oceans.
來源:NASA每日圖片
