As the Sun moves lower in the sky, its light must travel through a greater portion of the atmosphere before reaching you.

It might happen every day, but the sight of the sun sinking below an ocean horizon ... longer wavelengths. The blue light gets more easily scattered, which is why the sky is blue.

A creepy green flash illuminated the sky as the sun set over the ocean in Oregon ... can turn a vibrant shade of green or even electric blue. Oregon Live reported that staff at the Marine ...

Look up on a clear sunny day and you will see a blue sky. But is this the true color of the sky? Or is it the only color of the sky? The answers are a little complicated, but they involve the ...