Why are the shawdows positions of earth and all of the moon of the inner circle the same?

The shadows of Earth and all of the Moon in the inner circle are the same due to the alignment of the Sun, Earth, and Moon during certain phases, particularly during a lunar eclipse. When the Earth passes directly between the Sun and the Moon, the Earth's shadow falls on the Moon, creating a uniform shadow across its surface. This phenomenon occurs because the light from the Sun is blocked by the Earth, resulting in a consistent shadow pattern that affects all parts of the Moon within that shadow.