. . . & the moon is blue!
http://en.wikipedia.org/wiki/Molecules
why is the sky blue?
http://math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html
http://en.wikipedia.org/wiki/Molecules
why is the sky blue?
http://math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html