卡西尼号从土星向外望去
(原标题: Cassini Looks Out from Saturn)
2022-12-23
浏览次数: 17
这是土星环内部的样子。2017年，美国宇航局首次指示卡西尼号宇宙飞船在土星和土星环之间俯冲。在潜水期间，机器人飞船拍摄了数百张图像，展示了土星大气结构的前所未有的细节。然而，回顾过去，航天器也能够捕捉到令人印象深刻的远景。在这张特色图片中，在土星最接近地球的几个小时前拍摄的，可以看到土星不寻常的北六边形围绕着北极。土星的B环是最近的可见环，而黑暗的卡西尼号将B环与外环A分开。仔细观察会发现两个小卫星守护着f环，f环是可识别的最远的环。在这张照片拍摄几个月后，经过十多年的探索和发现，卡西尼号宇宙飞船燃料不足，被指示进入土星的大气层，在那里它肯定融化了。
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This is what Saturn looks like from inside the rings. In 2017, for the first time, NASA directed the Cassini spacecraft to swoop between Saturn and its rings. During the dive, the robotic spacecraft took hundreds of images showing unprecedented detail for structures in Saturn's atmosphere. Looking back out, however, the spacecraft was also able to capture impressive vistas. In the featured image, taken a few hours before closest approach, Saturn's unusual northern hexagon is seen surrounding the North Pole. Saturn's B ring is the closest visible, while the dark Cassini Division separates B from the outer A. A close inspection will find the two small moons that shepherd the F-ring, the farthest ring discernable. A few months after this image was taken -- and after more than a decade of exploration and discovery -- the Cassini spacecraft ran low on fuel and was directed to enter Saturn's atmosphere, where it surely melted.