I regret I can only like this once.
I have heard two new theories (two more options) about the Emperor. The first is that the Emperor never died but was stranded on that planet they show. They would have to explain what that explosion was after Vader threw him "overboard" though. The second I heard was that the New Order found the remains on that planet and cloned him which opens a host of other questions. Have not really thought about these but fans are speculating the hell out of it right now.
Also. this could be a pure coincidence but MARVEL started with their new Star Wars series of comics. Interesting enough, they established now in the comics that a Sith can transfer his essence into a dark object and keep it there so it can be later channeled. Evidently, it was part of what Palpatine was referring to when he said that there was a technique that allowed a Dark Sith to prevent people from dying. It's also why when someone really powerful with the Dark Side of the force dies there is a residual dark power that lingers (like on Dagobah with Yoda or Ahch-to with Luke). It's so powerful that it masks the presence of Jedi allowing them to hide out.
Interesting theories but as usual they are probably all wrong.
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