The moon doesn't actually shine on its own. It reflects sunlight! Here's how it works:

1. The Sun: The sun is a giant ball of burning gas that emits light and heat.

2. The Moon: The moon is a large, rocky object that orbits the Earth. It has a dusty, gray surface.

3. Reflection: When sunlight hits the moon's surface, some of that light bounces back towards Earth.

4. What we see: This reflected sunlight is what we see as moonlight.

The moon's surface isn't perfectly smooth, so it scatters the light in different directions. That's why we see different phases of the moon, from a sliver to a full, round disc.