If you lived on mercury, you would always be the same distance from the sun see the sun rise in the west and set in the east be freezing at night because the planet has no atmosphere be crushed by the weight of the planet's thick, heavy atmosphere

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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