Astronomers discover an exoplanet, a planet obriting a star other than the Sun, that has an orbital period of 3.37 3.37 Earth years in a circular orbit around its star, which has a measured mass of 3.67× 10 30 kg 3.67×1030 kg . Find the radius r of the exoplanet's orbit.

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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i think its d if wrong im sorry