The Peace Prize and the science prizes have very little to do with each other except that all the prizes (except the economy prize, as you pointed out) was created by Alfred Nobel. The science prizes are awarded by the Royal Swedish Academy of Sciences, while the Peace Prize is awarded by a 5 member committee appointed by the Norwegian parliament. So in some sense the Peace Prize is a political prize from the start, even if I don't think it was Nobel's intention.
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The Peace Prize and the science prizes have very little to do with each other except that all the prizes (except the economy prize, as you pointed out) was created by Alfred Nobel. The science prizes are awarded by the Royal Swedish Academy of Sciences, while the Peace Prize is awarded by a 5 member committee appointed by the Norwegian parliament. So in some sense the Peace Prize is a political prize from the start, even if I don't think it was Nobel's intention.