Well, "science" is a interesting topic but like any sub-branch of any epistemological system, science is not an exact science (pun intended).
Questions like these aren't "solved" and then set in stone or displayed in a glass case.
"Measurements suggested the giant planet's rotation rate was changing over time, as if Saturn were somehow speeding up or slowing down. That puzzling result left scientists searching for answers."
I'd venture to say it appeared to be "changing" in fact because it was and is always changing. This isn't so much a mystery as it is the nature of the universe.
I just posted about this topic in my Chronos and Kairos thread.
https://wtf.coffee-room.com/topic/3681/kairos-the-ancient-greek-art-of-knowing-when-to-act#:~:text=Kairos%3A The-,ancient,-Greek art of
We human beings have to be vigilant continuously about what Karl Marx (the writer whose work is canonical among intellectuals, not the "communist" we all love to hate) called reification. Reification involves setting up a continual feedback loop where we "play back" what we think we know in a way that the only outcome is our belief, whatever it was when we started believing it, can only end up being fallaciously reinforced.
The planets, the galaxy, the universe-- are never static and if a human being truly wanted to map their machinations, he or she would die trying...