When it comes to science fiction, the devil is in the details.
Science fiction is expected to be a lot more grounded than fantasy or science fantasy, meaning that a good science fiction novel, game, or movie is expected to be at least somewhat plausible. You should be able to look at the worlds it presents and go "yeah that sounds about right, I can totally see a society going in this direction".
While a writer should never bog down the audience with information, enough info should be provided to make the world they construct feel all the more alive and interesting.
Across science fiction, there have been many worlds created in science fiction that have stood the test of time. The only rule for this list is that the story needs to have been adapted into a film or TV show at least once, regardless of quality.
Beyond that, there's nothing getting in the way of talking about one of the cornerstones of science fiction, the ten coolest worlds in sci-fi history.