Ok well idk if you guys thought about it already but its about how the juubi's body formed into the moon. Remember how Pain made that floating moon in order to capture Naruto when he was transforming? Do you think its possible that the sage of the six paths used the same technique and launched it into space? Because look at the facts. Pain mentioned that the moon that he created was nothing compared to the SO6P's. Also Madara mentioned while talking to the Kages, that was where the body of the juubi was so that no one could reach it. Tell me what you think
I'm not so sure about the Juubi being captured in the moon, but I thought it was a given that, considering Nagato's mentioning of the SO6P, it was the same technique.
But as to the part about the Juubi is in the moon - I don't think so. Two reasons:
(1) The Juubi was split into 9 parts;
(2) Isn't Madara's Moon's Eye plot dependent on the moon physically being there? It just seems that if the Juubi was actually in the moon, why wouldn't Madara just bust him out? And if he did or planned to, the Moon's Eye plan wouldn't work.
I dunno, interesting idea though.
EDIT!!! Ok I just checked out those links posted. Yes Ok so the CORPSE is there...i was thinking there was some sort of power left to possibly revive it. Ok that makes sense then and it wouldn't mess up the Moon's Eye plan and there is no reason to bust up the moon xd
So let's think further - Madara wants to revive the POWER of the Juubi to become a jinchuuriki, i dont suppose you would need the physical corpse to do that, only the Juubi chakra/spirit. Because if he needed the actual corpse, it WOULD bust up the moon (xd) and he couldnt do the Moon's Eye Tsukuyomi.