Why is the sky blue?
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If a little kid ever asks ‘mu just why the sky is blue,
you look him or her right in the eye and say, 'aes
because of quantum effects involving Rayleigh
scattering combined with a lack of violet photon
receptors in our retinue."
Philip C, Plait, Bad Astronomy W’
Misconceptions and Disuses Revealed, s
from Astrology to the Moon Landing "Hoax"