中文翻譯:
在遙遠的太空中，有一顆叫做Callisto的月球。它的表面是整個太陽系上受到撞擊最嚴重的，想知道裡面有什麼嗎？Callisto是一個像冰塊一樣的小球，而且它比地球的月亮Luna還要大！曾經有NASA的任務來過這裡，像是Galileo太空船。不過，現在的照片其實是1979年NASA的Voyager 2飛過Callisto時拍的。它的表面看上去是黑乎乎的，但因為有很多的冰層和亮亮的裂痕，讓它有些顏色。更有趣的是，科學家們認為Callisto的內部可能藏著一層液態水，這給了我們希望，也許這裡能找到生命！和它的姐妹月球Europa和Ganymede一樣，這些地方都是令人興奮的探索目標！現在，歐洲航天局的JUICE和NASA的Europa Clipper太空船正朝著木星進發，準備更仔細地研究這些月球！
原文:
Its surface is the most densely cratered in the Solar System — but what’s inside? Jupiter’s moon Callisto is a battered ball of dirty ice that is larger than the planet Mercury. It was visited by NASA’s Galileo spacecraft in the 1990s and 2000s, but the recently reprocessed featured image is from a flyby of NASA’s Voyager 2 in 1979. The moon would appear darker if it weren’t for the tapestry of light-colored fractured surface ice created by eons of impacts. The interior of Callisto is potentially even more interesting because therein might lie an internal layer of liquid water. This potential underground sea is a candidate to harbor life — similar with sister moons Europa and Ganymede. Callisto is slightly larger than Luna, Earth’s Moon, but because of its high ice content is slightly less massive. ESA’s JUICE and NASA’s Europa Clipper missions are now headed out to Jupiter to better investigate its largest moons.
來源:NASA每日圖片
