> I've read elsewhere on the Internet that Dune the novel actually is an inspiration for the Star Wars universe

A greater inspiration is the comic series Valerian and Laureline [1]. Lucas pumped not just the characters and spaceships (yes, the Millenium Falcon comes from there) but also the atmosphere of Far West casual fun adventure and creativity bordering on the fantasy.

I look forward to reading articles about how Valerian copied Star Wars when the movie comes out [2].

Note the years the series was written and do not read the last few if you are not used to the way authors of that era dared to wrap up their stories.

[1] https://en.wikipedia.org/wiki/Val%C3%A9rian_and_Laureline

[2] https://en.wikipedia.org/wiki/Valerian_and_the_City_of_a_Tho...