Irish Farmer

I dont know wether you had already read this topic somewhere
If not , you must be a very smart guy -:)
Actualy the question about the color of the sky is an extremely subtle topic
It was arisen for the first time by T. Young , if I am not wrong.
The solution was found some hundreds years later

To complete JCL's explanation I would like to make the following general consideration
Nowadays you can find a lot of scientific books written for an audience of non specialist
This is good of course
However these kind of books are also somehow deceiving

They try to explain concepts by means of " analogies " without using math, for obvious reasons
For example the "Inflating balloon" which I myself used in an other thread to explain the Einstein's universe

The key point is that when talking about universe or atom , you can not alwayes reason by analogies

Do not try to figure out in your mind the Einstein's universe
Nobody can, even Einstein himself could not

Modern phisics is pure math, up to a certain extent