芝加哥巨石阵: 棋盘城市的秋分

芝加哥巨石阵: 棋盘城市的秋分

Chicagohenge: Equinox in an Aligned City
Image Credit & Copyright: Anthony Artese

Explanation: Chicago, in a way, is like a modern Stonehenge. The way is east to west, and the time is today. Today, and every equinox, the Sun will set exactly to the west, everywhere on Earth. Therefore, today in Chicago, the Sun will set directly down the long equatorially-aligned grid of streets and buildings, an event dubbed #chicagohenge. Featured here is a Chicago Henge picture taken during the equinox in mid-September of 2017 looking along part of Upper Wacker Drive. Many cities, though, have streets or other features that are well-aligned to Earth’s spin axis. Therefore, quite possibly, your favorite street may also run east – west. Tonight at sunset, with a quick glance, you can actually find out.

Tomorrow’s picture: comet approaches

芝加哥巨石阵: 棋盘城市的秋分
影像提供与版权: Anthony Artese

说明: 在某些面向上，芝加哥市形似一座现代巨石阵。面向所指的方向是东西向，而时间则是今天。在地球上的今天和每一个春分与秋分，太阳会沿着正西的方向西沉。也因此，今天在芝加哥，太阳会沿着所有和赤道对齐的长街和建物落下，形成名为芝加哥巨石阵的景观。上面主题影像呈现的芝加哥巨石阵，是在2017年9月的秋分，见于上瓦克大道。有许多城市的街道或其他景物之规画，或许与地球的自转轴对齐，所以很可能你最喜爱的街道，也是东西向的。而你只要在今天日落时匆匆一瞥，就能找出答案。

明日的图片: comet approaches