雪山上的三个天空拱门
(原标题: Three Sky Arches over Snowy Alps)
2026-04-21
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为什么天空中有三个拱形而不是两个？上个月，一架直升机把他送到瑞士和意大利边境附近阿尔卑斯山的一座高峰上，一位爱冒险的天文摄影师预计，我们银河系的两个拱门将在夜间出现。左边是朝向银河系中心的内拱，日出前可见，右边是日落后可见的外拱。但是有三个拱门。这位惊讶的天体摄影师很快意识到，天空是如此黑暗，以至于一整个微弱的黄道光弧线也很明显——阳光被太阳系内部的尘埃散射。它巧妙地连接了两个银河系的拱门！第二天早上，一架直升机把这位天文摄影师接了回来，经过40个小时的处理和合成，这张特色的三拱形360度全景图诞生了。拼图远景：今日天文学拼图
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Why are there three arches across the sky instead of two? Last month, after being dropped off by a helicopter at a high mountain peak in the Alps near the Swiss Italian border, an adventurous astrophotographer expected two arches of our Milky Way galaxy to be visible during the night. These were the inner arch looking in toward the center of our galaxy on the left, visible just before sunrise, and the outer arch on the right visible just after sunset. But there were three arches. The surprised astrophotographer soon realized that the sky was so dark that an entire arc of faint zodiacal light was also noticeable -- sunlight scattered by inner Solar System dust. And it artfully connected the two Milky Way arches! The next morning a helicopter picked the astrophotographer back up, and after 40 hours of processing and combining that night's images, the featured triple-arch 360-degree panorama resulted. Jigsaw Vistas: Astronomy Puzzle of the Day
© Angel Fux