A mysterious spiraling blue light illuminated the night ... shows the glowing light spinning across the sky in what many social media commentators likened to a spiral galaxy.

Northern lights (aurora borealis): What they are and how to see them 10 Night sky targets ... These types of particles remove the red, yellow and blue color components from a white light beam ...

But did you know the color of the sky will also change? In the spring and summer, you’re more likely going to see a light blue sky. Sometimes, it’s kind of a milky appearance, and some days ...

The sky is blue — physicists tell us — because blue light in the sun's rays bends more ... most animals have only two types of cones instead of three (dichromatic vs. trichromatic).

Adding a new choice to the lineup of MacBook Air colors is the all-new sky blue. A beautiful, metallic light blue that creates a dynamic gradient when light reflects off of its surface ...