天宫号太空站凌月

2022年8月25日

Tiangong Space Station Transits the Moon
Image Credit & Copyright: Lucy Yunxi Hu

Explanation: 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.

Tomorrow’s picture: little planet

天宫空间站凌月
影像提供与版权: Lucy Yunxi Hu

说明: 在这幅摄于8月20日的下弦月彩色影像里，月球崎岖的南极区位在影像的上缘。这幅建构自摄于澳洲新南威尔斯斯普林兰奇的影片定格及静态照片的影像，还记录到中国天宫空间站凌越的景象。在这个转瞬即逝的凌月事件里，太空站用不到一秒的时间就越过黝黑及和阳光照耀的月盘。其中，天宫空间站位在高约400公里的低地球轨道上，而月球则约在400,000公里之外。在这幅叠合多张照片的影像里，明亮月表上的细微颜色差异清楚可辨。而这种肉眼见不到的月表色泽变化，则反映了月表化学组成的真实差异。

明日的图片: little planet