What Causes the Color of the Sky?

The color of the sky is caused by light bouncing off tiny particles in the air.

Imagine you're playing with a bag full of tiny balls, like marbles but way smaller. When you shine a flashlight on them, some of the light goes straight through, and some bounces back. That’s what happens with the sunlight and the air molecules in our sky.

During the day, sunlight has to travel through the air, and all those tiny particles scatter the light. The blue light scatters more than other colors, like red or yellow. So when you look up, you see blue all around you, like a big blue blanket.

When the sun is low in the sky, like at sunrise or sunset, its light has to travel through more air. That means more scattering happens, and the red and orange light gets scattered too. So instead of seeing blue, you see pink, orange, or even purple, just like when you mix paint on a palette.

It’s not magic, it's just how light and air play together!