A great deal of science fiction is just fantasy with spaceships. It uses technological tropes to seem like it isn't fantasy, but that's just surface gloss.
Really though? Seems to me that the only sub-genre of space science fiction that is surviving relative to others is hard space science fiction. There's an abundance of high quality titles to choose from even (compared to the previous millennium).
Edit: Highlights include Leviathan Wakes/The Expanse, The Three-Body Problem, Children of Time, Pushing Ice (and other titles by Alastair Reynolds), Interstellar (debatable, but it's good), Project Hail Mary, For All Mankind, and many more.
Alpha Centauri is a triple star, even if it is not the kind of three body system depicted in that story (mainly because one of the 3 stars is much smaller than the other 2, so it orbits stably around them like a very big and distant planet).
While the triple star Alpha Centauri does not have mass ratios between its stars that are compatible with the story plot, I think that ignoring this technical detail is a much less serious plot hole than those of the majority of the non-fantastic Hollywood movies, which are supposed to happen in the real world, but they still contain a lot of impossible actions.
Proxima orbits at a great distance from the inner pair of stars, around their center of mass. Proxima is also a small red dwarf star. This layout had to have been well-known by the time the book was written.
This is perhaps similar to the pursuit of "unobtainium" in Avatar.
I don't see how. Yes, protons are made out of quarks. No, this doesn't mean that you can "roll out" proton "like a sheet", and then "etch a circuit" (!!!) on it, quantum or otherwise.
For literature: House of Suns* if you feel like strapping in for a wild ride with nevertheless believable physics. Leviathan Wakes/The Expanse if you're looking for a more "down to Earth" setting. Children of Time if you want an alien experience. Avoid reading summaries of any of these books beforehand. They're best enjoyed going in blind.
I've heard "The Expanse" and "For All Mankind" are supposed to be good TV shows, but I haven't seen them yet.
If you've already read most of the well-known ones, I could give you some recommendations from less well-known authors and self-published authors you probably haven't heard of yet. Though it would help to have some general direction of what you're looking for (military/space opera/other, ftl/aliens?, etc). Allowing for limited FTL handwavyness opens up a lot of space opera titles that elect to otherwise play by hard sci-fi rules.
* Some may recommend "Pushing Ice" over this one for being more "hard" sci-fi, but personally House of Suns was a much more satisfying read.
Alas I think I've read/watched everything on your list. I'll try a useful echo response. I read the two big Arkady Martine books, and much of Ann Leckie's work. I thought they were all pretty good. Martine because the Aztec's in space genre is new to me, and she writes so well about people, Leckie because her galaxy spanning empire of genetically cloned god-kings and spaceships with transferrable personalities is clever and disconcerting.
Which is unfortunately true, but also just illustrates how far science-fiction has fallen - not sure when it started but I guess Star Wars played an important role to remove the 'science' from 'science-fiction'.
It's been there since day one. What, you thought early era SF used accurate science? No, they used made-up rules based on whether they could tell a good story.
Science fiction usually doesn't conform to how the world actually works in the same way pornography usually doesn't conform to the way sexual relationships work. They are both there to tell titillating stories, not describe reality.
> What, you thought early era SF used accurate science?
It depends on the author I guess. Stanislaw Lem for instance mostly separated his "silly-fiction universes" (e.g. the Ijon Tichy and 'robot fairytales' novels) from his "hard sci-fi" universes (for instance the Pilot Pirx novels) - and there it was mostly about the restrictions of space travel (where space travel is usually just plain old cargo hauling), Pirx never left the solar system because it simply wasn't possible during his lifetime (part of him eventually did - maybe - in his last book 'Fiasco'), instead the Pirx novels were mostly occupied with typical 'space trucker' problems like oil leaks on his rocket boosters, wrestling with space harbour bureaucracy or the occasional humanoid robot going into a mode that could be described as 'mad' or 'depressed'.
Or more. The War of the Worlds was published half a century before Lem's first novel. And arguably SF goes back farther than that. Jules Verne in 1864. Frankenstein was published in 1818.
Yeah, I'm deliberately sticking to the time period when SF was recognized as a genre in its own right, distinct from others. Otherwise we might have to go back a few centuries, depending on one's definition of sci-fi!
For instance: Isaac Asimov's Three Laws of Robotics aren't based on any practical science, they exist as a plot device for setting off mystery stories with robots and morality plays about hubris. And the reason robots have positronic brains is that positrons were recently discovered at the time, and it sounded cool. Yet people will swear Asimov is one of the hardest SF authors around.
Sometimes you might get a SF author who's an expert in a particular field or has a specific hyperfixation, and that one aspect of their stories might be grounded somewhat in plausibility, but everything else turns out to be complete nonsense.
I believe people use the word “hard” to differentiate more scientifically rigorous scifi. I’m not well-versed enough to know when that started being a term, or what the status quo was before it was a term.
Interestingly there’s also “high” fantasy to differentiate between earth like and non earth like subject worlds, and then even “historical fiction” to describe books that try to be faithful to some degree to some historical time period on earth.
Anyway, this is all to say maybe “how far science-fiction has fallen” might be a narrow interpretation of what’s been happening to fiction in general over the past 75 years. More options than ever, maybe…
Perhaps you should rewatch Star Trek as well. TOS back in 1966 had rather a lot of technical marvels that were ridiculous at the time that became commonplace tech that we take for granted in 2026: electronic tablets, pocketable communication devices that could reach a ship in orbit, a computer that could be talked to and and respond with at least limited intelligence, orbit to surface sensors, etc. Certainly most of the concepts weren't original to Star Trek but the series' popularity embedded them in the global cultural consciousness.
The fear of humans being replaced by computers (TOS: The Ultimate Computer) was speculative but also germane back then and is perhaps even more germane today.
