The starships left with the optimism. In the 50s there was a greater demand for stories with an unconstrained vision of the future where growth and expansion amount to flourishing. Later generations that lived in the excesses of growth saw it as the source of an intensifying dystopia. They stood athwart history and demanded decelleration. Star Trek lost ground to Terminator, Foundation to Neuromancer. Escaping sideways into fantasy gained the popularity lost by escapes into the future.
I predict a correlation between space-based scifi sales and polls on whether the country is heading in the right direction.
Also, we've realized the scientific reality that traveling faster than light is likely impossible, and the vast distances to other habitable planets would mean tens of thousands of years of travel even with the most efficient technology.
Interstellar space is also hostile to life, and any life present at the destination will not use the same DNA coding for protein (if gene expression even works that way).
We also do not yet have the technology for a complete survey of nearby habitable planets.
It is not an encouraging line of thought.
You don’t need to go faster than light. Once you approach anywhere near the speed of light, time slows down so much that journey time becomes irrelevant.
I believe we already have the resources to colonise the Moon and maybe Mars right now. There would have to be considerable R&D, and willpower, and it would be very expensive but I think it is within our powers. Humans would have to live underground and deal with dust, maybe microbes in the case of Mars, but we could do it. The spaceships to go to Mars would have to be big but they could more easily be built on the Moon due to the lower gravity.
> the vast distances to other habitable planets would mean tens of thousands of years of travel even with the most efficient technology.
Spoken like someone who's never read Tau Zero
Stephen Baxter's short story "Pilot" is another good one:
> and any life present at the destination will not use the same DNA coding for protein (if gene expression even works that way).
Well, that could be worked around in the world building. My favorite SF-friendly scenario would be if life originated in the Sun's natal cluster (perhaps not around the Sun itself), with tens of thousands of star systems, and spread between them before the cluster dispersed. Presumably panspermia would be much easier in such a situation because the stars are closer together and because maybe residual gas could help particles get trapped near other young systems. In this case all the "infected" systems could have the same coding.
A nice consequence of this scenario is it's compatible with the Fermi argument: even if origin of life is unlikely, it just had to happen once here, and so it not happening elsewhere in the galaxy (or even visible universe) is not a problem.
Not sure your point. It's fiction. Are we closer to finding dragons, faeries, or magic?
Visiting remote planets is as unlikely as riding a dragon. But both make for great stories.
Science Fiction doesn't have to be fantasy, it can be speculative. But if your setting or plot relies on something we know to be scientifically untrue, and you don't put some effort into explaining why it somehow works in your setting, it's fantasy and not speculative.
Someone like Asimov never considered his books to be fantasy and that he could just insert whatever he wanted with no justification. In fact, he never considered sci-fi to be a genre, he always argued it was a setting and that his most famous stories were detective stories in a sci-fi setting. But detective stories don't work if your world isn't grounded in something real. Otherwise the reader can't reasonably build their own theory or deduce the answer because it's based on what the author thought was cool and not what logically connects.
The appeal of something like The Expanse just falls apart if you introduce a FTL engine just because it makes for a more dramatic story moment somewhere in the plot unless there is some serious justification as to why the author didn't just break all the rules of their world (which is supposed to be our world, but in the future).
FTL starships in an SF story don’t need a detailed explanation, just a new invention.
It’s the exact same thing as a speculative story in the 1920s discussing supersonic flight, even though the jet engine hadn’t been invented yet.
For instance “Tunnel in the Sky” bypassed the whole issue in the 50’s, later imitated by “Stargate”…
These two examples are not equally unlikely. They are of different orders of unlikelihood, the one is extremely unlikely, the other simply impossible.
Presumably these are equally likely because you could build a DNA-printer and thereby create a dragon of some sort (not sure if it could have fully functional fire breathing though)?
Dragons are physically impossible in many more ways than the firebreathing. For one, things that large would probably struggle to fly. We can make larger things fly, but have to cheat using jet (or rocket!) engines to generate incredible thrust in ways not typically accessible to living beings.
- [deleted]
And now I'm picturing a dragon with bombardier-beetle style pulsed jet boosters. And while I'd typically question your assumptions of how big dragons need to be in order to deserve the name, I'll assert that quetzocoatlus nothropi[1] was big enough.
"Dragon" as a classification is odd, because when you look at every kind of mythological creature that gets classified as such nowadays, sometimes from cultures that wouldn't have recognized the concept, you find that they have little in common beyond some vaguely reptilian vibe and being scary.
And I'm sorry but that thing is too goofy looking to be considered a dragon.
That's true, but stop to consider all the things we ARE doing...
* Space Station that lasts 25 years
* 3,000 satellites providing Internet Service
* Mars rovers that run for 10+ years
* Flying helicopters on Mars
And yet we still have a solar system, empty of life other than Earth, we can expand to. Why try to cross an ocean when everything we could want is across the river?
Two things baffle me:
1. The idea that Terran life is toxic and must not be allowed on other planets in the solar system.
2. The one person who is advancing our space faring abilities by leaps and bounds is routinely vilified and excoriated on HackerNews.
- [deleted]
2. I’m a big fan of the guy, except he went completely off the rails on political stuff… It’s hard that both can be true at the same time.
>Why try to cross an ocean when everything we could want is across the river?
That "river" is still vast and nothing we want is on the other side.
>1. The idea that Terran life is toxic and must not be allowed on other planets in the solar system.
It's less the idea that Terran life is toxic and more that we're still hoping to find some forms of primitive life elsewhere in the solar system, and don't want those efforts thwarted by cross-contamination. You decided the rest of the solar system is dead, not the scientific community.
>2. The one person who is advancing our space faring abilities by leaps and bounds is routinely vilified and excoriated on HackerNews.
If you really can't comprehend the reason why Elon Musk is villified by people then there's no point in trying to explain it to you.
Suffice to say that owning a rocket company doesn't absolve a person of their sins to everyone, even on Hacker News.
This is motivated pessimism. We knew in the 50s that breaking the speed of light was highly unlikely. We dreamed of the stars anyway. Now we refuse to dream, or to even attempt to solve the problems (a common pattern when discussing spaceflight is people who are blatantly searching for problems, rather than solutions), because we are pessimistic, devoid of imagination, and seek to legitimise our collective depression through scientific and engineering arguments.
You don't need to break the speed of light to get to the stars. Time dilation and space contraction mean that you can get there in as little time as you desire.
Everyone you knew on earth would be dead by the time you got back, but if it's just about you, the speed of light is no limitation at all. (The rocket equation, however, presents stupendous engineering challenges.)
Time dilation and space contraction only matter if you can reasonably achieve speeds of a significant portion of the speed of light. AFAIK nobody has even come up with a reasonable way to achieve this for lightweight probes, let alone for hundred-ton ships capable of carrying humans. And let's not forget the practical problems like all photons incoming from the front being blueshifted into ultrahard radiation that would make a point blank nuclear bomb seem like a small candle.
Realistically even getting to the nearest star in less than 400 years experienced time is way way WAY out of reach for now.
Laser accelerate a lightweight probe, probe lands on alien planet and self replicates a receiver and basic robot body. Send mind in the form of information at speed of light and download into robot body.
Something roughly along these lines was believable enough for the Altered Carbon universe.
Landing from relativistic speed would be a massive engineering problem, since you won't have a laser de-celerator on the other end. And landing on a planet would seem to require a rocket, which cannot be lightweight.
Not necessarily insoluble, but a massive unsolved problem.
"lightweight probe" and "self replicates" don't go together. Nanobots are just as much fantasy physics as FTL is.
So what? Dilithium + antimatter + magic space warping was enough for the Star Trek universe. The sky is the limit for science fiction.
Just in that first paragraph:
- How do you stop at the other end? There won't be a large laser array at the receiving end and a laser probe will not have enough stored energy to decelerate itself.
- How exactly do you download a mind to be transmitted? We can't do it right now to be sure, and it's not clear we could ever accurately do that depending on how finely detailed a human brain is.
- How do you transmit it reliably over several hundred light years? Background radiation alone is enough to drown out any signal after a few dozen light years no matter how good your transmission is. Also, when do you start sending? You cannot possibly know which probes survived. (you DID send out at least a few hundred probes right? Don't forget to multiply laser energy requirements by the amount of probes)
- How does the receiving end download a mind into a robot body? We can't even begin to do that on Earth, not even with worms or flies. Humans are right out.
- How do we power the lasers? Conservative estimates have put required laser power at several gigawatts at least. Current laser systems can do that in pulsed mode but only with extremely low duty cycles. Getting enough power together to supply millions of homes would be tricky to say the least. (and see the note above about needing multiple probes just to be on the good side of probability)
- How does the probe survive decades of ultrahard radiation? What about dust it will encounter at high-subluminal speeds, also for decades? The shielding for that won't be lightweight, but the heavier the probe gets the more difficult it will be to accellerate.
- The satellite which is light enough to be powered by lasers also contains the most magical 3d printer anyone has ever seen. You can't just pull the molecules for advanced processors and energy generation equipment out of the air, such a probe would need to set up significant mining industries all on its own without any human interaction.
- A basic robot body. Keep in mind that "picking up a keychain and choosing the right key out of it without dropping the whole keychain" is already a challenge for modern robots.
In short, it'll be several centuries before humanity even gets close to such a project. I'd like to be wrong, but it seems extremely unlikely anyone of us will see such a thing in our lifetime.
I have upvoted you, and perhaps you are right that there are shades of pessimism in this perspective.
The 2020s have not been known as reasons for great optimism. The pandemic and AI culling clades of the job market have been traumatizing experiences.
If you think this is something that started in the 2020s you need to review the chart.
I don't think it's motivated pessimism so much as a shifting tastes and changes in media. There are tons of SF stories with starships in movies, games and streaming platforms. It just happens to be the case that fantasy is more popular then SF at the moment where books are concerned.
Our astrophysicists don't even know why the universe is expanding, don't know that Lambda CDM is correct, don't know if things are universally consistent, yet we're so damned sure this is it.
We don't even know that this isn't a simulation. Not non-falsifiable, sure. But we're convinced we're bound to this solar system with our crude tools and limits of detection.
One new instrument could upset our grand understanding and models. Maybe we should wait until they get better hardware to marry ourselves to their prognostications of the end of time.
During the postwar years of plenty, people stopped dreaming. We had bold dreams before WWII, but people stopped looking at how far we'd come and started comparing themselves to everyone else. We had no mortal enemy, tremendous wealth, and "keeping up with the Joneses" became the new operating protocol.
We have more than we did in the past. The manufacturing wealth of 1940-1970 was a fluke. The trade wealth of 1980-2020 was a fluke. We were upset over an unfair advantage that won't last forever. Even today we're still better off than a hundred years ago, yet everyone focuses on how bad things are.
Maybe a return to hardship will make us dream again.
We do know why the universe is expanding. That's due to general relativity. That's well attested to high confidence.
We don't know why the expansion is accelerating. For that we have only speculation.
It’s well understood that the expansion of the universe is not “due to general relativity”. General relativity does explain some details of that expansion.
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Maybe, but the most compelling scifi to me personally is the generation ship stuff, like Ring by Steven Baxter.
And then there’s Cloud Cuckoo Land. (Anthony Doerr)
There is a scene in Pirates of the Carribean where captain jack is stuck in a void surrounded by duplicates of himself. It is his hell. As we have biult better and better telescopes we realize that as we expand into space we will be stuck talking only to ourselves, at least for a few thousand generations.
When they turned LIGO on i wanted to see warp drives whipping around. But all we saw was distant black hole mergers; interesting but not exactly a star trek moment. When areicebo fell and was not immediately rebiult, i realized that most people just dont care about ever meeting another civilization. Even if we did find one it wouldnt change much here on earth. Most people dont care about climate change. They dont care about anything beyond their own lifetime. What matter will aliens be if they are a thousand lightyears away? So people dream now about other things, about grimy politics and alternative history.
>When they turned LIGO on i wanted to see warp drives whipping around. But all we saw was distant black hole mergers; interesting but not exactly a star trek moment.
• The LIGO methodology is to look for hyper-specified patterns in voluminous reams of apparent 'noise'. It wouldn't be unfair to call it an extensively aggravated search for what one is looking for. That's okay, so long as they provide the stats to back up the non-noisiness of what they turn up. (I'm not a stats person and can't debate that, and. I trust their caliber enough that I don't feel the need to). But to your point, if there are other signatures lurking in LIGO data _that they don't know already how to look for_, then there is no reason why a paper would have gotten produced describing it since the first GW detection in 2015.
• Now, take this for what it's worth in terms of fragmentary information relaying - But at the first Sol Symposium in 2023 at Stanford, I can tell you that in podium-level banter between talks (perhaps it was Q&A and the like IIRC) it was asserted that the LIGO consortium was not allowing studies (read: not allowing access to its data) where the investigator's intension was related to UFO / UAP phenomena (like, extrapolating here, looking for signatures correlated with external reports of UAP sightings). If that claim was borne out, than perhaps the LIGO consortium is just doing preemptive reputation protection in not allowing such studies to kick off with its name associated with it. (One could attempt to follow up with astronomer Beatriz Villaroel for a lead on who said that or if there's substance to that research policy claim)
But my point is, between these two bullet points, you are afforded a complete 'empty set' - and decidedly not a 'negative result' - on whether or not LIGO has detected signatures of a 'warp drive' or other some such non-prosaic phenomenon.
The Chinese built a much larger spherical telescope, so what was the point of rebuilding Arecibo?
I visited Arecibo a decade before it collapsed. It was impressive and of great historical value, but could repair be cost-effective?
Edit: It did have some unique features.
https://en.wikipedia.org/wiki/Five-hundred-meter_Aperture_Sp...
Rebuilding it would cost maybe half a billion dollars. Give ICE an unpaid week off and job done. Maybe not the absolute best way to spend that money on science, but I fear the actual outcome is “it’s not cost effective so we’re not going to spend it on any science.”
> we've realized the scientific reality that traveling faster than light is likely impossible
Would any of the stories about the characters’ relationships with people not traveling with them be entertaining given the effects of time dilation?
I think I would argue that we already see the sea change in the later Dune books
The inner systems become hidebound as they continue to reach out they find that not only has someone beaten them there, they have become Other as well as antagonistic and expansionist.
I still find myself quite taken by some sci-fi writing. Iain M Banks works, Rajaniemi, and Joan Slonczewski. The “problem” is that they are not popular the way Harry Potter or isekai are.
I kinda have the same feeling for music as well, the best phases for metal and punk music are usually when stuff is going to shit. When everything looks bright and good the music just doesn't have the same quality, people are not angry all the time.
> best phases for metal and punk music are usually when stuff is going to shit.
Now should be a productive time for music in the US then, and possibly elsewhere if things continue on the same trajectory.
I don't know, to the East of the Iron Curtain science fiction wasn't mostly about future optimism (at least after the initial "we're building a better society" optimism had been brutally murdered during the 1950s and 60s), but often a critical mirror of then-current society transported into the future to escape state censorship.
Maybe it's as simple as free societies not having the evolutionary pressure to produce great literature that requires an interested and intelligent reader to decode the hidden messages written between the lines ;)
Stated with a different spin, the detached-from-reality takes of Campbell-era SF finally became too strained to enjoy.
Why did people want to escape Earth though? Maybe they felt Earth was past saving.
A lot of the old stuff isn't so much about escaping Earth, as outgrowing it. A feeling that it's our destiny to expand to the stars, just as it was life's destiny to come out of the oceans.
The more we look for alien civilizations and come up empty, the more I feel like they were on to something. For all we know, life is exceedingly rare in the universe.