It's incorrect to describe the moon as luminous because it doesn't produce its own light. Luminous objects emit light, like the sun or a light bulb. The moon reflects sunlight, which is why we see it.

Here's a breakdown:

* Luminous: Emits light (e.g., the sun, stars, fireflies)

* Illuminated: Reflects light (e.g., the moon, a mirror, a piece of paper)

So, the moon is illuminated by the sun, not luminous.