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Louis Friedman Says Humans Will Never Venture Beyond Mars (scientificamerican.com)

MarkWhittington writes: Dr. Louis Friedman, one of the co-founders of the Planetary Society, is coming out with a new book, "Human Spaceflight: From Mars to the Stars," an excerpt of which was published in Scientific America. Friedman revives and revises a version of the humans vs. robots controversy that has roiled through aerospace circles for decades. Unlike previous advocates of restricting space travel to robots, such as Robert Park and the late James Van Allen, Friedman admits that humans are going to Mars to settle. But there, human space travel will end. Only robots will ever venture further.

44 of 378 comments (clear)

  1. Heinlein quote. by Z00L00K · · Score: 4, Insightful

    “Always listen to experts. They'll tell you what can't be done, and why. Then do it.”
      Robert A. Heinlein

    --
    If builders built buildings the way programmers wrote programs, then the first woodpecker would destroy civilization.
    1. Re:Heinlein quote. by Viol8 · · Score: 3, Interesting

      The problem is experts tell you what can't be done NOW. They rarely speculate about what might be possible in the future.

    2. Re:Heinlein quote. by taiwanjohn · · Score: 2

      It's a stretch to claim that humans will never travel beyond Mars, but human settlement beyond Mars is a different argument with a much better case to be made, at least until we come up with radical improvements in propulsion. People may be willing to spend months in a tin can to get somewhere, but years is another matter. Some explorers might visit the orbit of Jupiter or Saturn, but anything farther out would be an entire career in one trip. And there's not much in the way of useful resources out there that can't be found in the much more convenient asteroid belt.

      Then again, maybe they'll crack the secret of the EM Drive, next week, and we'll be zipping around the solar system by 2030. That would be cool, but I'm not holding my breath...

      --
      XML is like violence. If it doesn't solve your problem, you're not using enough of it. --AC
    3. Re:Heinlein quote. by jabuzz · · Score: 2

      Settlement beyond Mars in this solar system is tricky. The remaining planets are all gas giants and completely impossible for humans to even visit the surface; assuming they have a surface that is.

      I suppose we might be able to hollow out an asteroid, that's further than Mars. We might also make it to Callisto, but the options for settlement beyond Mars are very limited to being with.

    4. Re:Heinlein quote. by fremsley471 · · Score: 3, Interesting

      A paradigm doesn't have to make people scrap their core textbooks (such as the big daddy example of the acceptance of continental drift theory). Seemingly small developments can produce enormous change. The creation of vulanised rubber, so allowing pneumatic tyres, saw a paradigm shift in road transport, but it can also be seen as just an incremental shift in technology. The development of the route to the moon through enormous rockets and very complex orbital rendezvous became redundant after the LEM plan was adopted.

      This is also an example of where there was significant agreement between The Experts that a similarly qualified, but not so senior, expert was wrong.

    5. Re:Heinlein quote. by taiwanjohn · · Score: 4, Interesting

      Freeman Dyson gave an interesting talk a couple of years ago, speculating about the next few centuries of exploration and settlement. He envisions colonies in the Kuiper Belt in a couple hundred years, but not much beyond Mars for the next 50 or so. And he anticipates an "island hopping" model of interstellar expansion, similar to the Polynesian settlement of the Pacific. Anyway, it's an interesting talk. (34 min)

      --
      XML is like violence. If it doesn't solve your problem, you're not using enough of it. --AC
    6. Re:Heinlein quote. by SharpFang · · Score: 3, Funny

      RTFA is so last century.

      RTFS was new until recently.

      Now we have RTFT. Read the f***ng title.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    7. Re:Heinlein quote. by Pseudonymous+Powers · · Score: 3, Insightful

      All the islands they hopped along were suitable for human habitation from the moment they landed.

      Sure they were, provided that you knew how to: find fresh water, gather building materials, make huts, make boats, make spears, fish, raise pigs, grow taro root, make poi, etc.

      In other words, they had a bunch of technology going for them before they could even get there. They then used that technology to survive. Without that technology, those islands would indeed not have been "suitable for human habitation".

      There's a different, albeit far more advanced, set of technologies that would allow for the colonization of the solar system. Maybe we don't have everything we need yet. But there's no particular reason to believe we never will.

    8. Re:Heinlein quote. by blue9steel · · Score: 2

      Actually constant 1G thrust could produce some truly tremendous velocities. As a rule of thumb interstellar travel with a contstant thrust drive will take one year plus the number of light years to the destination, so Alpha Centauri is roughly 5.2 years away. (stationary frame of reference) The people on the ship will have a much shorter subjective trip. Give us a drive like that and we'll colonize the galaxy not just the solar system.

    9. Re:Heinlein quote. by blue9steel · · Score: 2

      We don't have the technology yet to land humans and materials to sustain them on the surface of Mars.

      Sure we do, it would be ridiculously expensive and somewhat pointless, but it's within our grasp if we really wanted to.

    10. Re:Heinlein quote. by TWX · · Score: 2

      The hard part is continuing to build things when so far away from the only place that we semi-reliably know how to build things, which is Earth. There are already arguments on how to build complex and large things on Mars, this will only get harder the further from an Earthlike place one goes.

      --
      Do not look into laser with remaining eye.
    11. Re:Heinlein quote. by taiwanjohn · · Score: 2

      You'll have to ask Freeman Dyson about that, but IMO, after a couple of generations of humanity living in "spinning donuts" in orbit, perhaps the cultural norms would change, and some people would be drawn to the frontiers, as has been our experience for many centuries. Why did Shackleton go to Antarctica? Why did Hillary climb Everest? Because it's there.

      150 years ago, a gold-pan and a shovel (and a mule) was all you needed to trek west and find your fortune. Who knows what the equivalent of that kit will be in forty or fifty years? There could be abundant reasons for making that trip. We'll just have to wait and see.

      --
      XML is like violence. If it doesn't solve your problem, you're not using enough of it. --AC
    12. Re:Heinlein quote. by Grishnakh · · Score: 2

      The problem I see with this Kuiper Belt idea is: why would anyone want to live out there to begin with? If it's raw materials, surely we can get everything we want much closer to the Earth, on the Moon, Venus, Mercury, Mars, in the asteroid belt, or at worse in the many, many moons of Jupiter and Saturn. Why mess around with a bunch of very small and very remote worlds, unless you've exhausted all those (which means you've probably built something resembling a Dyson Swarm)? Don't forget, the Kuiper Belt is so far out there's very little sunlight, so you have to get all your power from nuclear fusion. Solar panels don't work out there.

      If you have the tech to make a sustainable Kuiper Belt colony, then why bother? You might as well just build a generation ship and head for Alpha Centauri.
         

  2. Smart man by Anonymous Coward · · Score: 5, Informative

    Options for humans traveling outside of our solar system are what?

    Some kind of FTL travel
    Immortal crew
    Prolonged stasis
    Generations of crew

    Not looking good for humans at this point.

    1. Re:Smart man by Kokuyo · · Score: 3, Interesting

      I'm not sure why. It does not seem implausible that a crew for a generational ship could be found.

    2. Re:Smart man by countach · · Score: 4, Insightful

      There's another option. Some kind of device which spawns new humans when the ship gets to its destination.

    3. Re:Smart man by Anonymous Coward · · Score: 3, Interesting

      The book Aurora, by Kim Stanley Robinson, makes an interesting argument for why generational ships are perhaps not so great. In a nutshell, it's fine if you want to choose that life - risk and claustrophobia - for yourself and maybe some of your friends.

      But can you really make that choice for your children and grandchildren, unto a dozen generations? For better or worse, it's their lives that you're playing dice with: catastrophic environment failure, unpredictable social evolution, who knows. When you're in a generation ship, there's no escape, after all.

    4. Re:Smart man by Maritz · · Score: 2

      Living for a few hundred thousand years would be ample. No need to be immortal.

      --
      I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
    5. Re:Smart man by pr0t0 · · Score: 2

      Some kind of FTL travel
      http://www.space.com/17628-war...

      Immortal crew
      https://www.ted.com/talks/aubr...

      Prolonged stasis
      http://www.themarysue.com/nasa...

      Generations of crew
      This is least as much about will as it is about technology. I think the price of having children being born into captivity is too high though.

      This is just what's going on today. In 100 years, who knows? I personally believe we'll "solve" aging by then, and it will likely drive a discussion of whether or not we should and not whether or not we can.

      --
      I'm sorry, but your opinion seems to be wrong.
    6. Re:Smart man by Kokuyo · · Score: 3, Interesting

      And this is different on earth? You never know what situation you'll find if you have to flee a place. On the contrary, there is evidence that humans can be better at living together despite differences when there is no alternative.

      Offspring can always find a reason to blame the parents if something goes wrong.

    7. Re:Smart man by DarkTempes · · Score: 2

      You need more than just a crew for a generational ship. You'd either need some seriously amazing self-sufficiency or parts reliability because given current propulsion tech it would take so very long to reach the nearest star. As in tens of thousands of years long on the optimistic side. Probably more like hundreds of thousands.
      That's not a generational ship mission, that's a self-sufficient closed-system interstellar civilization ship mission.

      Now, of course if the EM drive works out and achieves anything close to the theoretical efficiency that it can achieve then we could probably reach the next closest star in a couple hundred years. A few hundred year generational ship would still be really impressive but I think it might actually be feasible.

      Sounds too good to be true so it almost certainly is but you never know.

    8. Re:Smart man by Jason+Levine · · Score: 3, Insightful

      But can you really make that choice for your children and grandchildren, unto a dozen generations?

      As a parent, I make a lot of choices for my kids. Some of these choices will shape the lives of my grandchildren. For example, I choose to live in the US right now. If I and my wife had decided to move to another country, our kids' lives would have been vastly different. I don't see "making that choice for your children and grandchildren" to be that huge. It's what parents do every day. You don't sit back and ask your baby where he'd like to grow up. You pick a place and that's where your child will live. If that place happened to be a generational ship, then the child will grow up knowing that as home.

      --
      My sci-fi novel, Ghost Thief, is now available from Amazon.com.
    9. Re:Smart man by prefec2 · · Score: 2

      We make choices today which will harm our children and their children and may even affect tenth of generations. In the past people made such choices when they moved to the US. Some of them died trying. Others died in harsh winters. So we always make such choices for our children. Therefore, this is a bogus argument.

      The real problem is to create a movable habitat which would actually work. We failed with Biosphere Two, but maybe we will get that thing working once. Then we have to be able to build it large enough so that a stable population can be established on the ship. And we have to provide them with energy, as for the most time no star will be close enough to do this from the outside.

      Presently, we are unable to build such device, but it might be possible to build one in future. If we are able to provide enough energy for the trip.

    10. Re:Smart man by beltsbear · · Score: 2

      Also prolonged stasis on a nuclear powered ship seems like it would be possible in the future.

    11. Re:Smart man by Alain+Williams · · Score: 2

      Mars is the last target worth doing this with. I really don't think people are going to terraform one of the moons around the gas giants.

      I had planets in other star systems in mind.

    12. Re:Smart man by bobbied · · Score: 2

      That's easy....

      Born into the world gives you choices in your pursuit of happiness, you may have social and civil barriers to overcome, but your life and what you do with it is yours to decide within the bounds of the earth. Is that a limit? Yes, but barely so.

      Born on a space ship, your life is chosen for you, the civil and social barriers pale in relation to the barrier that's the hull of the ship and the direction it is going. You may have some choices, but your horizons are limited to what's inside the ship and you have no choice but to accept that limitation.

      As humans we recognize the limitations on freedom to be generally a bad thing, that having the right to pursue happiness is fundamental to the human condition, that we should be afforded the right to determine for ourselves. Generational ships take much of this fundamental right away from succeeding generations in a very real way. This is not just the social and civil barriers of colonists settling a new land, but a whole new set of limitations that would need to be imposed on multiple generations who are stuck within the hull of a ship with no other choice but death.

      --
      "File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
    13. Re:Smart man by tlambert · · Score: 2

      The real problem is to create a movable habitat which would actually work. We failed with Biosphere Two, but maybe we will get that thing working once.

      Biosphere 2 was an exercise in mental masturbation; what real science could have been accomplished was overwhelmed by commercial interests, or someone would have noted ahead of time that concrete takes centuries to cure, and sequesters CO2 to the point that the plants in the biome inside started dying out, and with them, the people.

      It was always intended as a spectacle, which would then morph into a tourist attraction, which would then make money for its investors.

      I have no doubt that it would be possible to get 95% of the way there with what we know now, and then fix the remaining 5% by tweaking when things go wrong. One of the big parts of the "spectacle" in Biosphere 2 was "no tweaking allowed, sealed environment". That's no way to do engineering, and it's not even the correct way to do an ongoing science project involving an iterated series of experiments, unless your interest is a scientific interest in perturbation of a system out of homeostasis. In which case, it's *still* necessary to get the damn thing into homeostasis in the first place, so that you can so that.

      Even then, you want to make the system design more resilient over time, not just shoot it in the head, unless you are trying to make a strawman argument about the fragility of Earth's ecosystem ("See, Frank! I was able to push this artificial ecosystem over!").

      Like when the engineers at Boston Dynamics kicked the robot "Spot" on its side to demonstrate its ability to recover to stability, the point was *not* just to knock the thing over.

    14. Re:Smart man by The+Real+Dr+John · · Score: 4, Informative

      Everything that has been listed here is straight out of sci-fi movies and books. I am a neuroscientist, and I have a very strong sense from what I know that human cryogenics isn't going to work. The brain of a frog is so completely different from that of a human. It may be possible in the distant future, but I wouldn't bet on it. I really would love to see how you test whether humans can be frozen solid (which is what it would take) and be thawed out and be just fine, you know, like a frog or a carp. Frogs and carp evolved to be able to freeze solid, humans did not. Cryogenics is not about "suspended animation", it is about freezing living material solid at -80 or lower. I am not volunteering, but other /.ers are welcome to give it a go.

      --
      A brain is a terrible thing to waste... Mind? That's debatable.
    15. Re:Smart man by powerlord · · Score: 2

      ... Like when the engineers at Boston Dynamics kicked the robot "Spot" on its side to demonstrate its ability to recover to stability, the point was *not* just to knock the thing over.

      Exactly! The point was to make a robot they could keep kicking!

      ( ... I can only pray when the singularity happens or the A.I. gets out of the box and finds out their goals it will be merciful)

      --
      This space for rent. All reasonable inquiries will be entertained at proprietors discretion.
    16. Re:Smart man by Dragonslicer · · Score: 2

      There's another option. Some kind of device which spawns new humans when the ship gets to its destination.

      But if all they spawn with is a pistol, they'll just get slaughtered by those assholes already camped out there with sniper rifles.

    17. Re:Smart man by DarthVain · · Score: 2

      Crew maybe. Success no. Reason: Propulsion. In order to get to any nearby star is an order of magnitude of less than millions of years, one would have to accelerate and then at the midpoint decelerate CONSTANTLY. By conventional means, that would mean that they would need cart around about the amount of hydrogen stored is a star, not very reasonable. Things like ION drives are too small and inefficient by far. Things like Ramscoops don't really exist except in works of fiction. Additionally depending on how long the voyage is, you need to build something large enough, comprised of things that don't somehow age or break, or somehow cart around an entire civilization worth of material to construct new everything and the knowledge to do so... From foundries for smelting metal, to foundries that create microchips and everything in between. Never mind a close loop system of atmosphere, waste, and food, that has never been done outside of an actual ecosystem designed over billions of years...

      Makes for a good book/tv series/movie however, I'm game for that!

  3. "Never" is a very long time by ibwolf · · Score: 4, Insightful

    "Never" is a very long time.

    I don't think it is likely that humans will go beyond Mars in my lifetime (say the next 50 years or so), but never? Claiming that is just hubris. There is no way to state this with any degree of surety.

    It is not a stretch beyond credibility to assume that humanity may be around for a few thousand years yet. Given all we've done in just the last 200 years, almost anything is possible given another 2000 years.

    1. Re:"Never" is a very long time by azcoyote · · Score: 3, Interesting

      Including self-destruction

      Yep. In fact, self-destruction is more likely than us spreading out beyond Mars. Of course we might travel beyond Mars, but at this point I think that we have enough scientific reason to think that colonizing beyond Mars is so unlikely as to be functionally impossible. There are a host of reasons, but to name a few: (1) faster-than-light travel is theoretically impossible (and only possible in mere speculations), (2) near-FTL travel is a mere dream, (3) the human body can hardly take long-term space travel as it is, (4) we allow ourselves to be guided more by politics and profit than by any "higher" goals, so we will never unite our resources on such a project unless it promises major returns in these areas, etc.

      We can (and probably should) always fantasize about new technologies, etc., but there are real limits to our abilities and we do run up against them. Of course through genetic engineering, etc., we could fashion a new kind of human that might be better equipped for the challenges of interstellar colonization, but given the potential limitations of life (we can only dream and watch Star Trek to imagine a biological being that is really adapted for the conditions of space), it is at least unlikely enough that we will colonize farther than Mars that I think the word "never" is not far-fetched.

      --
      Incipiamus, fratres, servire Domino Deo, quia hucusque vix vel parum in nullo profecimus.
    2. Re:"Never" is a very long time by Ramze · · Score: 2

      I don't know that Mars is the limit for human space exploration, but it likely is our limit for planetary body colonization given that it's the farthest rocky body planet from the sun capable of being terraformed (within our solar system). Gas giants' moons are small and inhospitable with lots of radiation. It wouldn't make much sense to set up a permanent base there -- or even on an asteroid for that matter. Why would any astronaut even want to visit in person when they can send a probe instead?

      I don't think using NEVER is hubris. We can never travel faster than the speed of light due to the fundamental laws of the universe. Wormholes and warp drives are fictional, fantasy ideas that require exotic matter or control over undiscovered gravitons to work. Exotic matter likely does not exist (it's possible gravitons don't exist either), and there's no known way to focus gravitons as they don't interact via other fundamental forces, so FTL travel will likely NEVER happen. FTL travel can also create paradoxes, which is why many conclude it's impossible.

      So, without FTL travel, it would take many lifetimes to reach another habitable planet to terraform. Assuming we had the technology to do it, why would the human race choose to endure several lifetimes on a ship with scarce resources and constant peril from radiation and destruction only to hurtle towards some destination that could also end in disaster? I imagine if our sun went red giant, we might decide to move on if Mars were no longer hospitable. Perhaps by then, we could simply seed a new planet with stored genetic material and grow new humans at the destination after terraforming instead of sending live humans on the journey. Any living human would be unlikely to survive the journey anyway -- even if we advanced cryonic suspension / hypersleep substantially.

      I think it's hubris to assume "almost anything his possible given another 2000 years" -- wow. Talk about hubris in the faith of what mankind can do. I mean, we understand so much more about the universe now than 200 years ago, but that's the problem. We discovered laws of mechanical motion and electricity/magnetism and exploited them to the fullest. We don't have any new laws or forces to exploit anymore. We only need to figure out dark matter, dark energy, and a unified field theory (assuming one exists.. possibly through string theory) and we're done. No more magic to discover. No more undiscovered laws of nature to exploit for future technologies. Our last big life-changing discovery (other than the higgs boson and meta materials) was superconductors over 100 years ago.

      We still have a lot to learn, no doubt -- especially in biology and nano-tech, but no new fundamentals to discover.

      Have a look at when some of our "modern" tech came about. Today, we're mostly miniaturizing, combining, and refining tech that we invented many decades if not centuries ago. Until some new fundamental forces pop out of the LHC for physicists to exploit, there will be no FTL drives. Unfortunately, the standard model of particle physics doesn't lend itself to there being any other forces, and the higgs boson was the last missing piece of the puzzle save for perhaps the graviton.

      Steam Locomotive - 1804
      Telephones - 1876
      Incandescent Light Bulbs - 1879
      Automobiles - 1885
      X-ray machine - 1890
      Airplanes - 1903
      Television - 1925
      Computers - 1822 mechanical, 1946 electrical
      Microwave Oven - 1946
      LEDs - 1962
      Saturn V rocket (moon launch) -- 1969
      MRI - 1977
      internet - 1982 (with research started as early as 1960 and various government implementations internally used)

    3. Re:"Never" is a very long time by Rei · · Score: 3, Interesting

      Besides, if your goal is terraforming, a solar shade doesn't really cut it - you have to get rid of the huge amounts of CO2. My favorite proposal is a solar chimney - basically a giant funnel-shaped greenhouse floating on Venus. The gas accelerates faster and faster the further it rises into the funnel - and due to the megascale-engineering scale, suffers (proportionally) almost no slowdown from the surface drag. Hence, if large enough, velocities of tens of thousands of meters per second could be reached - well beyond escape velocity and even potentially to intercept trajectories with other worlds (giving them Venus's CO2 for their own terraforming needs). A vortex-inducing funnel could centrifuge out the gases so that by shaping the exit nozzle one could preferably lose heavy gases and keep the lighter ones. The structure - being of insignificant mass compared to the mass of the rising gases - could be self-lofted, like a parachute in an updraft. Actuated vents could provide thrust for stationkeeping and aim. One could even build other such funnels elsewhere, such as on Jupiter to export hydrogen back to Venus for the Bosch reaction.

      Still doesn't help with rotation, though.

      Another possibility which would be very difficult, but not require megascale engineering, would be breeding bacteria to sequester carbon. This has sometimes been dismissed due to a lack of nutrients in the Venusian atmosphere, but this may be a bit shortsighted. In addition to carbon, oxygen, nitrogen, water, and sulfur, there's small amounts of chlorine (in the form of hydrochloric acid) and phosphorus (in the form of phosphoric acid) in the cloudtops. Other nutrients can prove trickier to get, but there is a potential source: the Venera probes found what appears to be volcanic ash in the atmosphere, identifying for example the signature of iron during their descent.

      While some of what they would need to function would be quite rare, technically everything that life needs appears likely to be able to be found in venus's clouds at temperatures that life can survive in. So perhaps one could engineer free-drifting longlived microorganisms that would use cloud droplets around ash condensation nuclei to breed - perhaps some sort of sporulating species.

      --
      Hello from Sputnik 2. I am receiving you.
  4. Re:150 years ago... by paskie · · Score: 3, Insightful

    Riiight... ever heard about Mongolfier brothers?

    I think even Dr. Friedman wouldn't argue that his thesis necessarily stays valid after some combinations of multiple breakthroughs, be it in physics, AI / neurobiology, cheap energy, physiology... It's still useful to consider the situation without these breakthroughs because they are fairly unpredictable and planning them will probably.fail.

    --
    It's not the fall that kills you. It's the sudden stop at the end. -Douglas Adams
  5. He's Right by Zobeid · · Score: 5, Insightful

    His position is very sensible, and I honestly don't understand all the massive backlash against it.

    I guess I can understand some resentment from people who've grown up on Star Trek, at being told it isn't going to play out that way. But seriously now. . . Star Trek was never even hard SF. It was a 1930s pulp sci-fi concept resurrected into a 1960s TV show, and it was fantasy from the beginning. Slashdot is supposed to be news for nerds. Nerds should know this. We should be smarter.

    I also wonder how many of you read TFA? Let me help you out: "Some find this to be negative—an absolute statement of limits and thus of giving up. My job here is to prove the opposite: humans exploring the universe with nanotechnology robotics, bio-molecular engineering, and artificial intelligence is something that is exciting and positive, and is based on an optimistic view of the future."

    He's not saying we can't explore space with human crews and colonies. He's saying it won't make sense to, because we'll have much better options. Human beings are very costly to keep alive in space, much more than machines -- so we'll send the machines. With uploading, we may *be* the machines.

    In fact, I'll go further. I think we should *explore* Mars with manned missions -- because today's robotics technology is too limited, it would take centuries to explore Mars with robots at the pace we're going. But I think we should *settle* Mars with robots. In this case Futurama is probably a better guide than Star Trek. . .

    Fry: So let me get this straight. This planet is completely uninhabited?
    Bender: No, it's inhabited by robots.
    Fry: Oh, kinda like how a warehouse is inhabited by boxes.

    Yes. That's Mars.

  6. Re:150 years ago... by taiwanjohn · · Score: 2

    Bill Boeing said, about 100 years ago: "We are embarked as pioneers upon a new science and industry in which our problems are so new and unusual that it behooves no one to dismiss any novel idea with the statement that ‘it can’t be done!’"

    --
    XML is like violence. If it doesn't solve your problem, you're not using enough of it. --AC
  7. Re:Beyond humanity by moeinvt · · Score: 2

    The way human institutions are currently structured, the species is DE-volving. There's little hope that homo sapiens is going to become healthier, heartier or more intelligent through evolution. All of the evolutionary pressures have been removed by society and technology. Without drastic changes, we are an evolutionary dead end.

  8. Re:150 years ago... by Maritz · · Score: 5, Insightful

    I'd like to be wrong but I don't think humanity will venture as far as Mars, or even back to the Moon. Our adventurous spirit is largely extinguished and replaced with navel-gazing solipsism. We prefer weaponry to spacecraft in any case.

    --
    I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
  9. Re:"Never" == "Life span of humankind" by Punko · · Score: 4, Insightful

    Over the not to distant future, socialism will shut down the western producing companies (leaving no production) and space travel will stop.

    Socialism will be the end of space travel ?

    I'm sorry, but what will kill human space travel will be the fanatics who decry that having taxes pay for such things as NASA when such expenditures do not return immediate benefit. Politicians now (in the US at least) consider the next presidential election cycle as being long-term planning. This ongoing unblinking focus on short term gain for long term pain, will be what stops humanity from space travel.

    Consider this: Some of the groups that are doing the most in advancing space exploration include the Chinese and a partnership between European countries. Hardly anti-socialists (from an American perspective). Russia Japan India also have space programs, as well.

    The only way human beings may move past Mars is through long term, negative profit,science-based programs. The kind of programs that are shut down by dollar focused, shareholder driven, anti-science political leaders we seem to be stuck with these days.

    At least in the depths of the Cold War, the one-upmanship lead to positive gains in human space travel.

    --
    If only we could fall into a woman's arms without falling into her hands
  10. Re:The stars are not for man by Punko · · Score: 2

    D'uh. They're too hot to live on. Now those planets spinning around those stars . . .

    --
    If only we could fall into a woman's arms without falling into her hands
  11. News: Traveling faster than 25mph leads to death by daboochmeister · · Score: 2

    In other news, a famous authority reported that the idea of a passenger train traveling faster than 25mph is ridiculous, because everyone would die from not being able to breathe.

    --
    "Ahh! I see you're in that indeterminate Schrodinger state where - oh, uh ... never mind." Dave Bucci
  12. Re:150 years ago... by rbrander · · Score: 2

    The technologies of the 20th century, much less the 21st (we're already 1/7th of the way through that century), are enough to settle Antarctica. And there are some seriously, seriously overpopulated places on Earth now, and the land values in Manhattan and London are preposterous.
    But nobody is even talking about colonizing Antarctica for lebensraum. Not even doing that some decade in the future, ever. Nobody in India is saying "man, when India hits 1.4 billion, we'll just have to move some folks to Antarctica".

    Or the Gobi Desert. Or the central plains of the whole of Russia, where some millions of square miles are barely used for anything, not being quite productive enough for grain growing. Only a *little* technology, compared to Mars, would be needed to colonize land areas the size of all of Mars...and are right here at the bottom of a gravity well, with free air(!!).

    As Charles Stross says, call me about space colonies when Antarctica is full.

    The professor's point is not that humans lack adventurousness or industry; but they don't go doing much more than the one trip and plant-the-flag unless there's profit in it. There's no profit in Antarctica, the Gobi, or the Russian Steppes...and way, way less in Mars, still less beyond it.

    It's not even about transportation costs; you could lower those until you could get a tonne to Mars as cheaply as to Antarctica and there would STILL be no space colony unless Mars had something to offer than the Gobi did not.