九月日出阴影
(原标题: September Sunrise Shadows)
2022-09-24
浏览次数: 13
今年9月春分的决定性天文时刻是在2022年9月23日星期五，UTC时间01:03，当太阳在每年一次的穿越地球天空的旅程中穿过天球赤道向南移动时。这标志着北半球的秋天和南半球的春天的开始，那时地球上的白天和黑夜几乎相等。当然，如果你通过观看日出来庆祝天文季节的变化，你也可以寻找黄昏光线。在任何日出或日落时，云投下的阴影在黄昏的天空中都有一个戏剧性的外观。由于透视的原因，平行的阴影似乎指向太阳升起的地方，在你的地平线上正东方接近春分日期。这张照片拍摄于9月15日，拍摄的是日出的大海和天空，捕捉到了天空中黄昏的光线，以及意大利佩塔恰托村附近地中海海岸的水光反射。
查看原文解释
The defining astronomical moment for this September's equinox was on Friday, September 23, 2022 at 01:03 UTC, when the Sun crossed the celestial equator moving south in its yearly journey through planet Earth's sky. That marked the beginning of fall for our fair planet in the northern hemisphere and spring in the southern hemisphere, when day and night are nearly equal around the globe. Of course, if you celebrate the astronomical change of seasons by watching a sunrise you can also look for crepuscular rays. The shadows cast by clouds can have a dramatic appearance in the twilight sky during any sunrise or sunset. Due to perspective, the parallel shadows will seem to point back to the rising Sun and a place due east on your horizon near the equinox date. Taken on September 15, this sunrise sea and skyscape captured crepuscular rays in the sky and watery specular reflections from the Mediterranean coast near the village of Petacciato, Italy.
© Donato Lioce