黄昏时分的地球
(原标题: Planet Earth at Twilight)
2022-04-22
浏览次数: 25
在我们美丽的地球上，在这美丽的海洋和云层的景色中，没有突然的、尖锐的界限标志着白天进入黑夜。相反，阴影线或明暗线是漫射的，显示了我们所经历的暮光逐渐过渡到黑暗。太阳从右边照亮了这幅景象，云层顶部反射着穿过尘土飞扬的对流层（地球滋养大气层的最底层）的微微变红的阳光。一个清晰的高海拔层，沿着白天的上边缘可见，散射蓝色的阳光，并逐渐消失在黑暗的太空中。这张照片摄于2001年6月，地点是国际空间站，轨道高度为211海里。当然，在家里，你可以看看《今日地球》。庆祝：今天是地球日
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No sudden, sharp boundary marks the passage of day into night in this gorgeous view of ocean and clouds over our fair planet Earth. Instead, the shadow line or terminator is diffuse and shows the gradual transition to darkness we experience as twilight. With the Sun illuminating the scene from the right, the cloud tops reflect gently reddened sunlight filtered through the dusty troposphere, the lowest layer of the planet's nurturing atmosphere. A clear high altitude layer, visible along the dayside's upper edge, scatters blue sunlight and fades into the blackness of space. This picture was taken in June of 2001 from the International Space Station orbiting at an altitude of 211 nautical miles. Of course from home, you can check out the Earth Now. Celebrate: Today is Earth Day