So I'm Reading an Awesome Book
"It’s a little-known fact that if there are no clouds in the sky, the colors of the sunset follow a certain specific sequence. When I discovered that, I spent some wonderful evenings sitting outside, with my notes in hand, watching for the oranges, purples, and reds to appear, and discovering the various sunset phenomena: the amazing “purple light” that appears about twenty minutes after sunset, and the “Earth’s shadow” that rises up in the east. Afterward, when the sunset is over, night begins and there are other lights to be seen: Stars, of course, but also lovely faint lights that come from the air itself (called the “airglow”) and lights from the dust that circles the planets (called the “Zodiacal light”). These are very precious things to know, because the world looks different when you know them." --James Elkins, How to Use Your Eyes