Which is the most accurate statement about the observation of astronomical objects?
a) it is easier to notice the motions of objects closer to us
b) it is easier to notice the motions of objects farther from us
c) the distance to an object does not affect how we notice its motion

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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