If Earth had no atmosphere, the moon would be visible all the time. So why is it only sometimes visible in daylight?
The moon's presence in the night sky has transfixed people for millennia. But why is the moon sometimes visible during daylight?
Broad daylightThe gas particles in our atmosphere — mainly nitrogen and oxygen — scatter light that has a short wavelength, such as blue and violet light. This scattering, which involves absorbing and re-emitting light in a different direction, gives Earth a blue sky. However, the moon's visibility during daylight is also influenced by other factors, including the seasons, the current phase of the moon and how clear the sky is on a given day.
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