The sky appears blue because of the way sunlight interacts with Earth’s atmosphere. Sunlight may look white to our eyes, but it is actually made up of many colors. When sunlight enters the atmosphere, tiny molecules of air scatter the light in all directions. Blue light waves are shorter than other colors, so they scatter much more effectively. This scattered blue light is what we see when we look up.
At sunrise and sunset, the light has to pass through more of the atmosphere, which scatters the blue light away and lets more reds and oranges reach your eyes. That’s why the sky changes color depending on the time of day.
It’s a fascinating mix of physics and beauty, and at Vero Q&A we believe understanding these natural wonders makes the world feel even more magical. The next time you step outside on a clear day, you’ll know exactly why the sky is wearing its blue coat.