The Why Files (2020) : 3x24

Despite it being humanity's constant companion through all of recorded time, the moon is still a mystery. Science hasn't been able to explain how the moon was formed, its unusual orbit, its distance from us, its density, its composition, its structure. These are all still questions. There are theories about the moon that solve some of these puzzles, but not others. There is only one theory that answers every scientific question about the moon. Just one. That the moon is a hollow, artificial structure, brought here by -- someone else.