This Blog's History: Why is the Sky Blue?

Why is the sky blue?  This is a common question that kids ask parents and it's a common question that parents don't have the correct answer to.  I first discussed this question on this blog on July 7, 2012.

Why is the Sky Blue?

It's a very common misconception that the sky is blue as a result of the blue oceans.  Since water covers 70% of the planet, it's assumed that since water appears blue, this causes the sky to appear blue.  Guess what?  That's NOT why the sky is blue!  The sky is blue as a result of the scattering of blue photons across our sky.  This explains why the sky appears blue all across the globe, even in a desert region that may be hundreds to thousands of miles away from a large body of water.  

For full details, read the original post last year.