It might seem like a simple question. But the science behind a blue sky isn't that easy. For starters, it involves something called the Rayleigh effect, or Rayleigh scattering. But that same ...

You may have noticed these as a tiny rainbow spot in the sky. I get questions about these ... Typically, the colors go from red closest to the Sun, to blue on the outside of the Sun dog.

Hundreds of millions of Americans will have the chance in March to see the first total lunar eclipse in nearly three years.

Hawaii’s sunshine, short rain showers and clean air together create some of the planet's best conditions for viewing rainbows ...

The brighter the sun, the clearer the rainbow. Look for them when it is ... archipelago's trade winds bring many small showers with enough blue sky between them for the sun to shine through.

The sky isn't just blue by chance. It takes all the colors of the rainbow for us to see it that ... our eyes are more sensitive to it and the sun emits more blue than violet energy.