Why is the sky blue?
We see sunlight as white light, but it is actually a mixture of red, yellow, orange, green, purple, and blue. When the sun’s light passes through the earth’s atmosphere, these individual colors are deflected and scattered in many different ways by atmospheric molecules and other stuff in the air.
The colors blue and purple are deflected the most, which causes these colors to scatter all over the sky. Since the human eye can detect blue easier than the color purple, humans see the color blue when they look up into the sky.
I wonder what color dogs see?