夜晚的冥王星
(原标题: Pluto at Night)
2022-03-26
浏览次数: 21
冥王星的暗夜面横跨这片朦胧的景象。在令人惊叹的太空视角中，太阳在这个昏暗而遥远的世界后面49亿公里（近4.5光小时）。它是在2015年7月被遥远的新视野号捕捉到的，当时飞船距离冥王星约21000公里，距离冥王星最近的距离约19分钟。柯伊伯带的一个居民在戏剧性的轮廓，图像也揭示了冥王星的脆弱，令人惊讶的复杂的朦胧的大气层层。在画面的顶部，新月形的暮色景观包括南部的氮冰平原，现在正式被称为斯普特尼克平原，以及诺尔盖山脉崎岖的水冰山脉。
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The night side of Pluto spans this shadowy scene. In the stunning spacebased perspective the Sun is 4.9 billion kilometers (almost 4.5 light-hours) behind the dim and distant world. It was captured by far flung New Horizons in July of 2015 when the spacecraft was at a range of some 21,000 kilometers from Pluto, about 19 minutes after its closest approach. A denizen of the Kuiper Belt in dramatic silhouette, the image also reveals Pluto's tenuous, surprisingly complex layers of hazy atmosphere. Near the top of the frame the crescent twilight landscape includes southern areas of nitrogen ice plains now formally known as Sputnik Planitia and rugged mountains of water-ice in the Norgay Montes.