土星的六颗卫星
(原标题: Six Moons of Saturn)
2026-08-11
浏览次数: 1512
土星有多少颗卫星？虽然总数可能会继续增长，但截至2026年6月，这颗环状气体巨星已经确认有293颗卫星。这比太阳系中任何其他行星都要多，包括拥有115颗确认卫星的气态巨行星木星。大多数已知的土星卫星都是小而不规则的卫星。许多小行星直径只有几公里到一公里的几分之一，排列在倾斜的外层轨道上。在这张8月5日拍摄的土星全家福中，我们可以看到六颗最大的卫星。土卫六的直径为5150公里，比地球的月球大，甚至比水星略大，位于右下方。你还可以在画面中看到冰冷的主要卫星，土卫二、土卫三、土卫四和土卫五。1655年，荷兰天文学家克里斯蒂安·惠更斯发现了土星的第一颗天然卫星土卫六。在太空时代，旅行者号和卡西尼号的发现增加了土星卫星的数量。NASA流：8月12日日全食。
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How many moons does Saturn have? While the total will likely continue to grow, as of June 2026 the ringed gas giant had 293 confirmed moons. That's easily more than any other planet of the Solar System, including ruling gas giant Jupiter with a mere 115 confirmed moons. Most of Saturn's known moons are small, irregular satellites. Many are only few kilometers to a fraction of a kilometer across and grouped in tilted outer orbits. Six of its largest satellites can be seen here, though, in this sharp telescopic Saturnian family portrait taken on August 5. Larger than Earth's Moon and even slightly larger than inner planet Mercury, Titan, with a diameter of 5,150 kilometers, is at lower right. You can also spot icy major moons Mimas, Tethys, Enceladus, Dione, and Rhea in the frame. Saturn's first known natural satellite, Titan was discovered in 1655 by Dutch astronomer Christiaan Huygens. During the space age Voyager and Cassini discoveries have added to the swelling ranks of Saturnian moons. NASA Stream: August 12 Total Solar Eclipse.
© Alexandre Trentini