Is it possible for Sauron to return?
No. After the destruction of the ring and his body yet again destroyed his spirit is render impotent. He will always be there, but never again to take a physical form.
How did Sauron rise again?
He assumed a fair form and flattered Ar-Pharazôn, but the King demanded that Sauron come back to Númenor as a hostage. Sauron’s body was destroyed, but his spirit was not diminished, and he fled back to Mordor bearing the Ring, where he slowly rebuilt a new body and his strength.
What if Sauron had repented?
So if Sauron had repented “out of the blue” he would have simply been doing what Manwe had commanded him to do all those millennia ago. While I would imagine that his judgement in the Third Age would be harsher than it would have been after the First Age, the Valar would have imprisoned and rehabilitated him.
Can morgoth revive Sauron?
No. There is, however, some discussion about whether or not they could “revive” (by which I’m assuming you mean re-embody) themselves. The Elves certainly held and taught that fëar or “spirits” may grow of their own life (independently of the body), even as they may be hurt and healed, be diminished and renewed.
Can Morgoth destroy the One Ring?
Sauron used part of Morgoth’s power to forge the One which is what made it so difficult to destroy, as well as being made by a master craftsman. Even Ancalagon, the greatest dragon to ever live, would have been unable to harm the One.
How powerful was Sauron before the One Ring?
Sauron was corrupted by Morgoth the first Dark Lord, and thus became the evil incarnate we see in the films. There is no mention that even before possessing the One Ring, he was many more times stronger than Elves, Dwarves, or Men in battle. He simply took the body of a man, as Gandalf did, to roam Middle-Earth.
How did Sauron take over Middle-earth?
Corrupted by the first Dark Lord, Morgoth, he served him as his lieutenant and later his successor, growing armies of orcs, goblins, and all manner of vile creatures to take over Middle-Earth and bend all its inhabitants to his will.
Did Aragorn almost defeat Sauron himself?
In the Battle of the Black Gate, the climactic clash at the end of Return of the King between Elves, Men, Dwarves, and the forces of Sauron’s evil, Aragorn almost fought and defeated Sauron himself.
What was Sauron’s shape in the Second Age?
As has been established, in the films, Sauron has no discernible shape. After the ring of power was cut from his hand by Isildur, much of his power diminished and he lost the impressive stature he had. But prior to that, in the Second Age, he had been able to take many interesting forms, none of which were mentioned.