MathUser said:
It's prettty stupid, he saved him so he's at the point before he became evil right? That's why he gots normal color for his skin and normal body parts? But for some reason he's aged. Did Luke somehow create an alternate timeline or something?
Perhaps it'll be established that the OOT will be the prequel to VII and the EU will be the sequel to the special edition.
No it's not. He's a freaking ghost. There is no physical form, it's his spirit. He was Anakin again when he died. He can appear to Luke as aged, yet healthy person if he chooses to.
If you still can't figure this out, go write George a letter.