Star Wars 9 shows that Emperor Palpatine never died and came back. Turns out that Emperor Palpatine went 'Back to the Future'

During Rey's era, they finally invented time machine. Its a very fast T fighter. If you hit a certain speed it goes back to the past. So a young emperial fighter Palpatine decided to ride the time machine to go to the past. And he stayed in the past and eventually became Emperor Palpatine. So Rey and her crew is now fighting the young Emperor Palpatine, who originated from the future. Got it?