Originally posted by quanchi112
His soul has nothing to do with the fact his form is indestructible.
Probably not. We are given no clue as to the mechanics of how it is achieved, but it doesn't really matter.
Thanos' form is indestructible this has nothing to do with his soul either. [/B]
Again, possibly correct.
But neither are relevant anyway. His form may be indestructible, but if there is no soul left to inhabit it then it is about as useful as the Destroyer armor with nobody in it.
Thanos is immune to death on the physical plane all stated on panel. [/B]
He says Death has "rejected" him and he "never return" to her side. So his soul cannot pass over to her at death. But there are other ways to end existence. This is why characters have been shown to fear destruction of their soul - because rather than dying and going to Death's realm it means total oblivion, a fate Thanos can still suffer.
None of this rules out destruction or capture of his soul by sufficiently powerful beings with that ability.