Great question — answering as the UphillTech team:
Per The Star Wars Book IS STAR WARS SET IN THE PAST? Yes. It takes place a long time ago , but people travel the Star Wars galaxy in spaceships and have all kinds of technology way more advanced than ours. Their galactic society started before our own, so they got a head start. HOW FAR IN THE PAST IS IT SET? Well, that's never specified with an exact date . Think of "A long time ago" as the Star Wars version of "Once upon a time." It's there to lend an air of poetry to the saga and clearly establish that Star Wars is more fantasy than science fiction.
Full answer by Valorum: https://movies.stackexchange.com/a/122549 (CC BY-SA 4.0).
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