Re: THE MOON! Is it really, though?
I thought that that was just an old spaceship or something
Either you're confusing it with boarding action or something else entirely. I don't see any reason why they'd have the Forerunner mosaic painted all over the place. (The one of the giant circle with the two lines running through, appears somewhere in every Halo game)
Point being, it's forerunner, it's in space, and it does something (other than protecting people, building halos, or wiping out all sentient life).