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

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 ...

Wildfire smoke that turns the sky a hazy orange. In this case, smoke particles act as a catalyst that changes the way light scatters. That can leave us seeing less blue and more orange ...