So we can't call the light of the moon polarised light
However; in terms of relativity and distance; i could consider that the moon itself become a flat shiny surface for the sunlight that hits it trough space. Like the moon is a bit for our own eyes, a white round spot (when it is full moon) and we are due to the distance that is between our eyes and the moon more or less unable to see that the moon is not a shiny flat surface but a surface with some relief.
In fact, if we talk about polarised light that arises only on shiny and flat surfaces.
I am very curious to hear a clear definition of a shiny and flat surface.
I think there are 3 polarisations of electromagnetic radiation, and only one of them; polarisation by reflection needs a so called shiny and flat surface to be called polarisation….
However, i think it needs to be remembered that the definition of shiny and flat in a surface is dependent from distance and our own human surveillance.
Please tell me if you think it is otherwhise and please tell me why.