Stars in a constellation appear close together, but most are not at all close together in space. a. TRUE
b. FALSE

the independent variable, or the one that is intentionally manipulated is the speed.

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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