天宫空间站过境月球
(原标题: Tiangong Space Station Transits the Moon)
2022-08-25
浏览次数: 15
这张拍摄于8月20日的彩色月相照片的顶部是崎岖不平的月球南极地区。它是由在澳大利亚新南威尔士州斯普林格兰奇拍摄的视频帧和静止图像组成的，它还捕捉到了中国天宫空间站的过境。过境本身是短暂的，空间站用了不到一秒的时间穿过阴影和阳光照射的月球盘。近地轨道天宫位于约400公里的高度，而月球距离地球约40万公里。沿着明亮的月球表面的细微颜色差异在多个堆叠的帧中显示出来。肉眼看不见，但它们表明了月球表面化学成分的真正差异。
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The rugged lunar south polar region lies at the top of this colorful portrait of a last quarter Moon made on August 20. Constructed from video frames and still images taken at Springrange, New South Wales, Australia it also captures a transit of China's Tiangong Space Station. The transit itself was fleeting, taking the space station less than a second to cross the shadowed and sunlit lunar disk. The low Earth orbiting Tiangong is at an altitude of about 400 kilometers, while the Moon is some 400,000 kilometers away. Subtle color differences along the bright lunar surface are revealed in the multiple stacked frames. Not visible to the eye, they indicate real differences in chemical makeup across the lunar surface.
© Lucy Yunxi Hu