中文翻譯:
你有沒有想過，如果你能在一年裡所有時刻都看到整個天空會是怎樣的情景呢？這幅圖片幾乎就能做到這一點！在2025年，每15秒，有一台全景攝影機拍下荷蘭上空的天空。然後，這些圖像的中央部分被對齊並結合在一起，形成了這幅精彩的天空圖，頂部是1月份，底部是12月份，而午夜的部分則垂直排列在中間偏左的位置。那麼，我們能看到什麼呢？最明顯的就是，白天的天空大多是藍色，而晚上的天空大多是黑色。在夜空中穿過的十二條光帶是月亮發出的光芒造成的。黑色沙漏形狀的最細部分在夏至的時候出現，這時白天是最長的，而最厚的部分則在冬至出現。我們也可以在這個圖中找到春分，比如去年的春分大約在圖的四分之三的位置。
原文:
What if you could see the entire sky — all at once — for an entire year? That, very nearly, is what is pictured here. Every 15 seconds during 2025, an all-sky camera took an image of the sky over the Netherlands. Central columns from these images were then aligned and combined to create the featured keogram, with January at the top, December at the bottom, and the middle of the night running vertically just left of center. What do we see? Most obviously, the daytime sky is mostly blue, while the nighttime sky is mostly black. The twelve light bands crossing the night sky are caused by the glow of the Moon. The thinnest part of the black hourglass shape occurs during the summer solstice, like today, when days are the longest, while the thickest part occurs at the winter solstice. Equinoxes can also be located in the keogram, for example the northern-spring equinox from one year ago is about three-quarters of the way up.
來源:NASA每日圖片
