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Rex Features
The franchise creator said science has little connection with the universe he invented for the films.
He is quoted as saying: "We look at it as a different dimension. The laws of physics are different here. Star Wars is not science fiction at all. It's much more attuned to mythology, to psychology, to history than it is to science.
"It's more of a parable about the way we are, rather than the way we're going to be. That's why it starts out as a fairytale - a long time ago in a galaxy far away - once upon a time.
"It deals with princesses. It's purposely designed not to be about where we're going. It's about where we've been and what we can learn from the past in the present."
Lucas's new animated film Star Wars: The Clone Wars hits UK cinemas on Friday.
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