Howto colonize the moon, build CN tower size rail gun and rail gun the parts to build another rail gun CN tower on the moon you know what would be funny if the

Howto colonize the moon, build CN tower size rail gun and rail gun the parts to build another rail gun CN tower on the moon you know what would be funny if they make a CN tower size rail gun and rail gun materials to the moon to build the same thing LOL did scientists rule out rail guns ?