QUESTION:
Why is the sun yellow and the moon white?
Does it have to do with atmospheric scattering?

ANSWER from Bill Gutsch on April 8, 1996:
The sun appears yellow not because of the earth's atmosphere 
scattering more blue but because the sun's surface is at a temperature 
of about 11,000 degrees F.  Put an iron poker into a hot furnace and 
pull it out when its temperature is 11,000 degrees F and it too 
would glow yellow.  

The moon shines by reflected light from the sun but the color that the 
moon appears is dependent not just on the color of the sun but also on 
the color of the moon's surface.  The result is that the light relected 
off the moon's surface and into our eyes looks pretty white.