''The Moon is not empty inside, nor does it contain substantial interior spaces as suggested by some fictional theories. Instead, geophysical studies indicate that the Moon has a differentiated interior structure similar to that of Earth, albeit less complex.
Interior Structure of the Moon:
Crust: The outer layer, about 30-40 kilometers thick, primarily composed of oxygen, silicon, magnesium, iron, calcium, and aluminum. It consists of various types of rocks, including basalt and anorthosite.
Mantle: Beneath the crust lies the mantle, which extends to about 1,000 kilometers below the surface. The mantle is composed of silicate minerals and is believed to be partially molten in some regions, which may lead to volcanic activity.
Core: The Moon has a small core, estimated to be about 2% of its total mass. The core is thought to be composed mainly of iron, with some sulfur and nickel, and is likely partially molten.
Density and Composition:
The average density of the Moon is about 3.34 grams per cubic centimeter, which is less than Earth's average density of about 5.52 grams per cubic centimeter. This lower density suggests that the Moon has a different composition, with a higher proportion of lighter materials.
Conclusion:
Overall, the Moon is not fully dense, nor does it have large empty spaces inside. Its interior is structured in layers, with a solid crust, a partially molten mantle, and a small core, making it a geologically active body with a complex internal structure''