posted on Jun, 25 2012 @ 03:19 PM
Some may say that it is the spectrum that creates the sky being blue. Well that is somewhat true, i believe, but I would have to add that since our
atmosphere contains:
Nitrogen -(78.084%)(colorless)
Oxygen -20.946%(pale blue color)
Argon -0.9340%(colorless)
Water vapor ~0.40% over full atmosphere, typically 1%-4% at surface
Carbon dioxide-0.039%(colorless)
Ozone- 0.0 to 0.07 ppmv (0 to7×10−6%)
Methane-1.79 ppmv (0.000179%)(colorless)
Since most gases in our atmosphere are colorless, except Oxygen. For my conclusion I would have to believe that the sun passing through the Oxygen
atoms refracts the sun in a blue color. With the sunrise and sunsets the multiple colors seen in the sky are from the water vapor in the atmosphere
giving the last bit of refraction from the sun and the earths atmospheric gases, plus mixing with the darkness from the side of the Earth not
receiving light...
chemistry.about.com...
answers.yahoo.com...