The blue color of the daytime sky results from Rayleigh scattering, where atmospheric atoms and molecules preferentially scatter the blue wavelengths of sunlight more than red, rather than being the ...

Also known as "blue field entoptic phenomenon" and "blue sky sprites", the little dots move in time with your heartbeat.

Why is the sky blue? It's a common question asked by children, and the simple answer is that blue light is scattered by our atmosphere more than red light, hence the blue sky. That's basically true, ...

The color of the leaves isn't the only thing that changes in autumn. Have you ever looked up on a crisp fall day and noticed how brilliant and clear the blue sky is? That's not just your imagination — ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (KXMB) – As the seasons change, we expect ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. One of the first questions a curious child often asks about the natural ...

A blue sky is a good sky. It's a reassuring sight that promises clear weather and bright days. But what does it mean when the sky turns purple? While it's not uncommon to spot purple skies during ...