We don't actually see light *from* the Moon. The Moon doesn't produce its own light. Instead, we see the sunlight that is reflected off the Moon's surface.

Here's a breakdown:

* Sun: The Sun is a giant ball of hot gas that emits its own light.

* Moon: The Moon is a rocky body that orbits the Earth. It does not have its own light source.

* Reflection: When sunlight hits the Moon's surface, some of it is absorbed and some of it is reflected back into space.

* Our Eyes: The reflected sunlight reaches Earth and enters our eyes, making the Moon appear bright.

The reason the Moon appears to change shape (phases) is because the amount of sunlight reflecting back to Earth changes as the Moon orbits our planet.