The conversation between human and AI assistant.
Why is the sky is blue?
That's really interesting. Does this happen all the time or only at certain times of the day?
Rayleigh scattering happens all the time, but the way we see the sky changes throughout the day due to the angle of the sun. For example, the sky may appear reddish or yellow during sunrise and sunset because the light has to pass through more of the Earth's atmosphere to reach us.