The moon doesn't have its own light source like the sun. The light we see from the moon is reflected sunlight.

Here's a simple explanation:

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

* The Moon: The moon is a large, rocky body that orbits the Earth. It doesn't produce its own light.

* Reflection: When sunlight hits the moon's surface, some of it bounces back towards Earth. This reflected sunlight is what makes the moon appear bright in the night sky.

So, while the moon doesn't have light inside of it, it reflects the sun's light and that's what makes it appear luminous.