system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Why is the sky blue?


assistant
The sky appears to be blue because of the way sunlight scatters in the atmosphere. The white light from the sun is composed of many frequencies and as it travels through the atmosphere, the blue light, which has a shorter frequency, scatters more. When looking at an area of the sky away from the sun we see the scattered blue light.