If Earth had no atmosphere like the Moon there would be no scattering, and the sky would remain black, even in daylight ...
(Xu Yan/Zhejiang Daily Press Group/VCG via Getty Images) A blue supermoon appears in the night sky over Sydney on Monday. (Saeed Khan/AFP via Getty Images) ...
This increased distance causes even more blue light to scatter, allowing the red and yellow hues to pass directly to your eyes. The color of the sky depends on the composition of the atmosphere.