Why the Sky Turns Orange and Pink at Sunset?

The sky changes color when the sun goes down because light travels through more air and plays tricks on our eyes.

When the sun is high in the sky during the day, its light travels a short path through the air. But as the sun gets lower, like when it's setting, its light has to travel much farther, almost all the way around the Earth!

This long trip means that some of the blue light, which is the shortest and bounces around most, gets scattered away. What’s left is the longer red and orange light, which travels straight into our eyes. That’s why the sky looks like a big, beautiful painting with orange and pink colors.

It's kind of like when you shine a flashlight through a glass of water. If the light has to go all the way through, it might look more red or orange, just like when the sun is setting. Sometimes clouds can catch this light and make the sky even brighter, like a fire in the sky!

So next time you see an orange sunset, imagine the sun is doing a long dance across the sky before going to sleep!