Hollow Moon - Wikipedia https://en.wikipedia.org/wiki/Hollow_Moon do you know that that the moon is hollow? well at first i dont know until i saw a video about it on u tube. in my opinion it might be a checkpoint, outpost or even a hideout for aliens. According to Wikipedia, the hollow moon hypothesis is also called the Spaceship Moon hypothesis. Researchers proposes that Earth's Moon is either wholly hollow or otherwise contains a substantial interior space. However, No scientific evidence exists to support the idea. There are some seismic observations and other data collected since spacecraft began to orbit or land on the Moon indicate that it has a thin crust, extensive mantle and small, dense core, although overall it is much less dense than Earth. This Hollow Moon concept is similar to the better-known Hollow Earth hypothesis, which was a recurring plot device in pre-spaceflight science fiction. All in all, I think this fits my hypothesis about aliens living in the moon pretty well. In fact, it could even be a moving fortress that we dont know about yet. This indeed is a mystery worth checking out about!