Now you can explain why the sky is blue and the sunset is red.

This is a “Science snack” from the collection at the Exploratorium.

When sunlight travels through the atmosphere, blue light scatters more than the other
colors, leaving a dominant yellow-orange hue to the transmitted light. The scattered light
makes the sky blue; the transmitted light makes the sunset reddish orange.

… and *here* is the experiment to prove it …