月亮上的国际空间站剪影

Space Station Silhouette on the Moon
Image Credit & Copyright: Eric Holland

Explanation: What’s that unusual spot on the Moon? It’s the International Space Station. Using precise timing, the Earth-orbiting space platform was photographed in front of a partially lit gibbous Moon in 2019. The featured image was taken from Palo Alto, California, USA with an exposure time of only 1/667 of a second. In contrast, the duration of the transit of the ISS across the entire Moon was about half a second. A close inspection of this unusually crisp ISS silhouette will reveal the outlines of numerous solar panels and trusses. The bright crater Tycho is visible on the lower left, as well as comparatively rough, light colored terrain known as highlands and relatively smooth, dark colored areas known as maria. Downloadable apps can tell you when the International Space Station will be visible from your area.

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月亮上的国际空间站剪影
影像提供与版权: Eric Holland

说明: 月亮上头的不寻常暗斑是什么？国际空间站。借助于精确的定时，摄影者在2019年捕捉到地球轨道上的国际空间站，出现在半明半暗的凸月前方。这幅摄于美国加州帕罗奥图市的主题影像，其曝光时只有短短的1/667秒。相对之下，国际空间站凌越月盘需时约1/2秒。如果仔细检视异常清晰的国际空间站剪影，会发现它的众多太阳能板及桁架之轮廓皆清楚可辨。此外，在影像中，左上角有明亮的第谷坑，与及相对崎岖名为高地的淡色原野及相对平滑的暗色月海。使用网路上的应用程式，可找出你所在之地于何时可见到国际空间站。