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

Ever wonder why the sky is blue, vs. say red, orange or purple? An effect called Rayleigh Scattering is part of the reason we ...

Ansar Lemon, an engineering PhD student at Harvard University, says the team modeled how the brightness and color of the sky at the poles changed with the injection of sulfate, calcium carbonate, and ...

Other atmospheric gases, such as carbon dioxide and methane, have little effect on sky color but play a crucial role in shaping the planet’s climate. As the Sun moves lower in the sky ...

Ever wonder why the sky is blue, vs. say red, orange or purple? An effect called Rayleigh Scattering is part of the reason we see only blue, despite it all starting with a rainbow of colors.

The sky isn't just blue by chance. It takes all the colors of the rainbow for us to see it that way. It happens because of something called the Rayleigh effect, or Rayleigh scattering, named after ...