What makes the sky blue and sunsets red?

The sky is blue during the day and red at sunset because light travels through air, and different colors act like different kinds of toys on a playground.

During the day, sunlight comes down to Earth. This light is made up of many colors, just like how a rainbow has lots of different shades. The blue color plays a special game, it bounces around in the air more than other colors do. That’s why we see blue all over the sky, like looking at a big, clear blue blanket.

At sunset, the sun is lower in the sky, so the light has to travel through more air before it reaches us. This makes the red and orange colors take center stage because they are better at traveling long distances. It’s like when you shine a flashlight through a room, the light gets dimmer as it goes farther, but the red part stays bright.

So the sky looks blue most of the time, and red when the sun is going to bed, all because of how light moves through the air, just like toys on a playground.