The sky is blue because of tiny particles in the air that scatter light. During the day, sunlight travels a short distance through the atmosphere, and the blue light gets scattered more than other colors. That's why we see the sky as blue. But at sunset, the light has to travel farther through the atmosphere, so the red and orange parts of the light are scattered more, making the sky look red or orange.
Examples
- A blue sky is like when you shine a flashlight through a glass of water, short paths let blue light dominate.
- At sunset, it's like looking at a flashlight beam passing through a long tube full of tiny colored balls, the red and orange ones are more scattered at the end.
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See also
- Why Is The Sky Blue In The Day And Black At Night?
- Why Is the Sky Blue?
- Why Is The Sky Blue In The Daytime And Black At Night?
- What Makes the Sky Change Colors at Sunrise and Sunset?
- Why Does the Sky Change Color?