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.

Alex Skopellos of Port Melbourne, Australia, painted his picket fence the colors of the rainbow, sparking a two-year battle with authorities.

An orange sky over Auckland, New Zealand, from smoke caused by the fires in Australia (@ZIMENAJ on Twitter/Reuters) ...

Some people think the sky is blue because of sunlight reflected off the ocean and back into the sky. But that’s not the real reason.

A little-known weather phenomenon known as 'a fogbow' was seen near Toowoomba, Queensland as Australia experiences a freezing start to winter.