The model that explains the phases of the moon has some limits. It doesn't consider how the distances between the Earth, Moon, and Sun change because of their oval-shaped paths, the Earth's spinning, the Moon's spinning, and effects like atmosphere distortion, light scattering, and other space objects. These factors can affect how we see the Moon’s phases, size, and brightness in the sky.
simplyify this and word it more simpler: The model of the phases of the moon has limitations in that it does not account for the changing distances between the Earth, Moon, and Sun due to their elliptical orbits, the Earth's rotation, the Moon's rotation, atmospheric distortion, light scattering, and the effects of other celestial bodies. These factors can cause variations in the observed phases and the apparent size and brightness of the Moon in the sky.
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