The blue color of the sky is due to Rayleigh scattering, where sunlight interacts with air molecules and scatters shorter (blue) wavelengths more than longer (red) wavelengths.
If there were no Sun, there would be no sunlight to scatter.
In the absence of light, the sky would appear black, just like space.
Other Options Explained:
(A) Orange & (B) Red → These colors appear during sunrise and sunset due to scattering but require sunlight.
(C) White → White light appears when all wavelengths are scattered equally, which happens only in certain conditions (e.g., fog or clouds).
Discusssion
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