Final answer:
The Sun rules the daytime sky and illuminates the Earth, while the Moon moves around the Earth and its illumination changes throughout the lunar cycle.
Step-by-step explanation:
The Sun and the Moon each have their own roles and movements in the sky. The Sun appears to move across the sky during the day, illuminating the Earth with its light. It rules the daytime sky and provides the light necessary for life on Earth. On the other hand, the Moon moves around the Earth and its position changes throughout the lunar cycle, which takes about a month. As we observe the Moon from Earth, the amount of its face illuminated by sunlight depends on the angle the Sun makes with the Moon.