The northern and southern lights, auroras visible from the poles, glow with a range of different colored lights. Here's the reason for each of those colors.

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 ...

If Earth had no atmosphere like the Moon there would be no scattering, and the sky would remain black, even in daylight ...

Typically, the colors go from red ... dog when the Sun is lower in the sky, so typically in the morning or evening. Just like your dogs, Sun dogs have some different names. The National Weather ...

T he sky isn't just blue by chance ... reaching the Earth actually comes to us in all colors of the rainbow, all of which travel in different wavelengths. All of those colors are scattered ...