Hollow Moon

Topic

The Hollow Moon and the closely related Spaceship Moon are pseudoscientific hypotheses proposing that Earth's Moon is either wholly hollow or contains a substantial interior space. This concept is widely rejected by the scientific community, as seismic observations and other spacecraft data have proven the Moon has a solid, differentiated interior with a crust, mantle, and dense core. Despite the lack of scientific evidence, the idea remains a popular subject in science fiction and conspiracy theories.