在每一年的春分点上，太阳横跨着地球上的赤道，使得地球上大部分地区的白天和夜晚的时间接近相等。

At each equinox, the sun crosses the Earth's equator, making night and day of approximately equal length on most of the planet.

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许多在地球夜晚天穹中可以看到的亮星都在围绕着标识出的太阳位置附近的树叶上描绘了出来。

Many bright stars visible in Earth's night sky are depicted on leaves surrounding the marked location of the Sun.

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对于拉利伯特而言，这些时刻在夜晚降临，因为国际空间站在大约超过1,7000英里上绕轨道旋转，每一个24小时的地球日会刚好遇到30分钟的爆炸16次。

For Laliberté, these moments came at night, which happens to come in 30 minute bursts 16 times per every 24-hour Earth "day," as the ISS orbits at over 17,000 mph.

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