The Milky Way galaxy is approximately 100,000 light-years across while the solar system is 1.9 light-years across. What is the scale ratio of the size
of the solar system to the galaxy?

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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