The Moon (Tohou progect universe)



The Moon ( tsuki) is a natural satellite that orbits our Earth in outer space. It is in the Outside World and not located in Gensokyo, but residents of Gensokyo can still see it in the sky every night. Despite it being a lifeless rock, there exists a world similar to that of Gensokyo.

As shown in Silent Sinner in Blue, there's an atmosphere and has living beings on it, called Lunarians. The gravity seems to be the same as Earth and it has an actual sea with forests and a city, called the Lunar Capital. However, these Earth-like environments are inaccessible to humans of the Outside World.