dystopic dystopic

bussard ramjets, cryonic stasis, and exoplanetary colonization

bussard ramjets, cryonic stasis, and exoplanetary colonization

what will it take?

hello everyone,

i'm a bit of a writer, and i can't help but feel drawn to science fiction. that shouldn't be surprising.

lately i've been reading up a great deal on theoretical physics, exobiological speculation, and all that. i was dismayed at first to learn that the chances of faster-than-light travel being physically possible are slim. it was also pretty discouraging when i sat down and looked at the actual speeds that'd be required to traverse sizable parts of the galaxy in a single conscious lifetime. it was a kick when i was down to learn about how difficult terraforming probably would be. but the more i've been learning, the more i've been excited about telling a different kind of science fiction story.

to draw an analogue to our world, the thing that made both the european colonial age and the modern process of globalization have been technology. it's not that we couldn't go to various places around the world before, it just cost too damn much to make anything worth it. i got my BA in sociology, and these sorts of things interest me.

if FTL travel isn't possible, then more than likely it'll be too damn costly to ever colonize beyond our own solar system as the way it's been envisioned in most of the celebrated scifi universes. But there are examples such as Arthur C. Clarke's Songs of a Distant Earth or Sid Meier's Alpha Centauri where humans colonize to escape destruction on earth.

recently i had the chance to meet both Kim Stanley Robinson and Geoff Ryman. Robinson is a hard scifi writer after my own heart; the Mars Trilogy is a really interesting look at our first attempts to colonize within our own star system. Ryman was actually more interesting to talk to, though. maybe because few people have ever heard of him (i was only there because i work at UCSD where he was being hosted). but i actually got to talk to him. he said he thinks we probably won't ever leave our galactic neighborhood.

i'm interested in writing a hard scifi story (or series) myself. i'm interested from a sociological point of view: what would drive us to colonize space? from a writer's point of view, i want to keep the earth around, so i'm not interested in a flight from disaster. what would societies be like after colonies were established? trade would be difficult, but not impossible. same goes for war.

while i'm certainly interested in contributions along those lines, i'm also interested in learning more about the hard science and engineering behind interstellar travel. i've got a lot of questions i haven't been able to answer through wikipedia and google alone. but i'm not about to list them all here.

it seems like a discussion about real ("real") colonization and space travel could use a place on these boards.

i'll kick it off. i've been reading up on propultion especially, and bussard ramjets seem like the most economically feasible option since they gather their fuel as they go - perhaps especially if it could be hybridized with another form such as antimatter-catalyzed fusion. the wikipedia article on bussard ramjets describe that they'd probably need what is essentially a magnetic funnel or ramscoop to gather interstellar hydrogen as propellant.

The mass of the ion ram scoop must be minimized on an interstellar ramjet. The size of the scoop is large enough that the scoop cannot be solid. This is best accomplished by using an electromagnetic field, or alternatively using an electrostatic field to build the ion ram scoop. Such an ion scoop will use electromagnetic funnels, or electrostatic fields to collect ionized hydrogen gas from space for use as propellant by ramjet propulsion systems (since much of the hydrogen is not ionized, some versions of a scoop propose ionizing the hydrogen, perhaps with a laser, ahead of the ship.) An electric field can electrostatically attract the positive ions, and thus draw them inside a ramjet engine. The electromagnetic funnel would bend the ions into helical spirals around the magnetic field lines to scoop up the ions via the starship's motion through space. Ionized particles moving in spirals produce an energy loss, and hence drag; the scoop must be designed to both minimize the circular motion of the particles and simultaneously maximize the collection. Likewise, if the hydrogen is heated during collection, thermal radiation will represent an energy loss, and hence also drag; so an effective scoop must collect and compress the hydrogen without significant heating.


talk about kick-butt imagery! spirals of heated gas careening towards a ship only to be fused and expelled in a jet plume? sweet.

anyway, i've written enough, and i hope it hasn't put anyone off. some of the the community here has proven to be very well read with regard to these kinds of science, so i thought it'd make a great topic for discussion: all things related to space exploration and colonization with reasonable extrapolations of current technology.

my biggest point of curiostiy was with respect to ramjets, so i'll take the kickoff: could the spiral motion of the inbound gas somehow be harnessed to artficially generate gravity by rotating the ship, instead of producing drag?

any volunteers?

final words: i hope no one minds my double-motive. i won't try to steer any dicussion, though if things quiet down i might pose more general questions to keep it going; i encourage anyone interested to pose your own!
435,562 views 930 replies
Reply #926 Top
Intersting.

I think I followed most of what you are saying. I would venture to guess that Marcuse would argue that the rapid development and introduction of new communication methods would be in its self a reason there is little defined etiquite? Its simply become too "mainstream" for etiquite to really have developed yet?

Hence people txt and send internet messages more for the sake of sending the message or using the technology than for having a rational conversation (Cause that guy without a cell phone is weird!). Kind of a merging of the production of waste and operationalism?

So in terms of Scifi, How would we avoid that that technological pitfall? Organically minded computers that can understand our emotions/feelings and transmit them to the person we are talking too? Would we even want to change the operational nature of non-personal communication? Perhaps makes sure its segregated, so that people of the future still place value on human to human interaction verses a screen?
Reply #927 Top
I would venture to guess that Marcuse would argue that the rapid development and introduction of new communication methods would be in its self a reason there is little defined etiquite? Its simply become too "mainstream" for etiquite to really have developed yet?


i'm sure he would, but marx argued that exact point. i think most of the elaboration is in das kapital, but the shortest and most flowery statement is in the communist manifesto (which he was commishioned to write, BTW):

"Constant revolutionizing of production, uninterrupted disturbance of all social conditions, everlasting uncertainty and agitation distinguish the bourgeois epoch from all earlier ones. All fixed, fast frozen relations, with their train of ancient and venerable prejudices and opinions, are swept away, all new-formed ones become antiquated before they can ossify. All that is solid melts into air, all that is holy is profaned, and man is at last compelled to face with sober senses his real condition of life and his relations with his kind."

that's right out of the openning.

Hence people txt and send internet messages more for the sake of sending the message or using the technology than for having a rational conversation (Cause that guy without a cell phone is weird!). Kind of a merging of the production of waste and operationalism?


pretty spot-on. i think Marcuse might phrase it a little differently. the term "One-Dimensional" figures in the name of several sections of his book as well as the title. i think for Marcuse it really doesn't matter what the technology is, as long as it's being advertised rigorously. here's another quote:

"The means of mass transportation and communication, the commodities of lodging, food, and clothing, the irresistible output of the entertainment and information industry carry with them prescribed attiudes and habits, certain intellectual and emotional reactions which bind the consumers more or less pleasantly to the producers and, through the latter, to the whole [societal system]... And as these beneficial products become available to more individuals in more social classes, the indoctrination they carry ceases to be publicity; it becomes a way of life. It is a good way of life--much better than before--and as a good way of life, it militates against qualitative change. Thus emerges a pattern of one-dimensional thought and behavior in which ideas, aspirations, and objectives that, by their content, transcent the established universe of discourse and action are either repelled or reduced to terms of this universe. They are redefined by the rationality of the given system and of its quantitative extension."

if it hasn't become obvious, social theorists are wordy. basically he's saying that the things we buy come with an ideology we buy into. we don't just buy things, we buy a life. and we believe it's a good life. why would we want to change it? in fact, it's such a good life, everyone should want to live this life. i think most people do, so i don't really need to pay attention to them to get them. and anyone who doesn't must be a freak, so i shouldn't even bother listening to them. they could be dangerous.

that's a bit of an exaggeration for sure. but look at terrorism as a perfect example. i'm not going to go too far into it because it's a controversial issue, but that's all i need to say to make my real point. how many people do you think would be willing to publicly say, "maybe we should listen to what the terrorists have to say"? as our illustrious and soon-to-be-ex president (praise the constitution, it's almost over!), "you're either with us or you're with the terrorists." and if you're with us, you obivously already think and want everything we think and want, right?

so, moving into a lighter example, you can look at Orwell's 1984. remember Newspeak? remember how the main character thought it remembeled ducks quacking? it didn't need to be more than that because Newspeak was only about exhanging orders, not ideas. it could just have easily been binary, and a modern-day Orwell might very likely use binary instead.

whether you see 'operationalism' as an insidious form of social control or a mere misfortune of our time, or something made up entirely, is of course up to you. but i do think there's something to be said for its relation to our economic lifestyles. a great deal of consumer products are presented as materials with which to build a lifestyle. even religion.

So in terms of Scifi, How would we avoid that that technological pitfall?


what's to say most of us would? i'm a dystopian writer myself. i mean, my screen name is dystopic ;p one thing i try to remember when i delve into social theory is that it's not like physical science at all. physical science doesn't really deal with truth; it deals with theory and large amounts of evidence. but because of the nature of social science and the complexity of its field of inquiry, social theory is at times much more like philosophy than scientific knowledge. so while social theory does try to ground itself in empiricial observation, certainty is a much more elusive objective than it is in the physical sciences. i think deep down, social theorists want to inspire people to change as much as anything, but they get bogged down in thick jargon too much to grab people's hears the way scripture, poetry, dance or art can.

so when dealing with social theory, i try to remember that there are always exceptions. and when thinking about social theory when contructing a story, the exceptions can actually make very interesting characters. in science fiction you can take something you observe in today's world to exteremes we can productively, but only, imagine. couple those extremes to a main character (protagonist or otherwise) who doesn't 'fit in', and i think if nothing else you've got a story people can relate to. no matter how many people do fit in to this dehumanized lifestyle, i think the temptation to break out of it is deep down somewhere in almost every person.

something i believe is that anything one person is capable of, any of us could be capable of. somewhere in each of us is a mother teresa, and a hilter, and they could come out given different circumstances (not just what's happening right now, but throughout our lives). i can see why most people wouldn't want to believe this, and to be sure i'm not accusing anyone of anything. i chose to believe this because when i meet encounter people i don't understand (in person or in history), it forces me to try and sympathize with them. why do they do the things they do? how do they see the world? how do they see people like me and those i love? why? it might not be an outlook that would work for most people, but it works for me. it certainly helps make me a better writer, i think. but as an individual, i tend to value understanding more than other possibilities (probably a reason i haven't had any relationships work out for very long :NOTSURE: ), but it is what it is.

N-E-whoo...
(pun on the conversation topic intended)

Organically minded computers that can understand our emotions/feelings and transmit them to the person we are talking too?


why not take it a step farther and have organice micro circuitry that could release neutrotransmitters directly into appropriate portions of the brain? not sure that would really help "avoid" the problem though...

Would we even want to change the operational nature of non-personal communication? Perhaps makes sure its segregated, so that people of the future still place value on human to human interaction verses a screen?


see, the thing is, i think this non-personal communication goes hand-in-hand with city life. before the internet, there was the telephone, the pony express, the royal messenger, the clay tablet... back when we were tribal, the most advanced communication technology we had was ritual. i think in some respects, modern technology helps fulfill the desire people have to be part of a small tribe, but allow them to live their cosmopolitan lifestyles with all the amenities of city life as well. the unfortunate consequence is that people feel no obligation to give the slightest damn about anyone who's not part of their little clique.

what could avoid all of this? i don't know. part of me wants to say making the virtual world more real, with real consequences, real policing, a formal registration process of some kind even. exchange certain freedoms-to for certain freedoms-from, if that makes any sense.
Reply #928 Top
what could avoid all of this? i don't know. part of me wants to say making the virtual world more real, with real consequences, real policing, a formal registration process of some kind even. exchange certain freedoms-to for certain freedoms-from, if that makes any sense


would we want that though? The internet is as much an escape from reality as it is another workspace or tool. We do everything from games to banking and more. I want my bank to know who I am, but not necesarily forum goers.

So in realtion to Sc-fi:

I figure everything will become more "mobile" and more "useable". I would also see cross integration. For example, We go to a restaurant, our PDA's (for lack of a better term), detect the restaurants Wi-Fi signal and download the menu for us to browse. We order our food from the menu and it is brought out to us (perhaps by a human?). Walking into a bus station would automatically D/L the bus time tables, etc.

In a way, It needs to make (or to appear to make) everything more convienent. Is checking, my 2 mail boxes and my 3 Email boxes easier? No. But it feels easier.
Reply #929 Top
would we want that though? The internet is as much an escape from reality as it is another workspace or tool. We do everything from games to banking and more. I want my bank to know who I am, but not necesarily forum goers.


well, i wouuldn't want that, and i don't think you would either. and i don't think it'll happen, either. though, registering your online self needn't remove your anonymity from other joe users. i mean, i go to the grocery store and no one knows who i am. but my ATM debit card is registered, as is my club card. if i steel something and i'm caught, the police will deal with me. in other words, "the system" knows who i am, even if other users don't.

I figure everything will become more "mobile" and more "useable". I would also see cross integration. For example, We go to a restaurant, our PDA's (for lack of a better term), detect the restaurants Wi-Fi signal and download the menu for us to browse. We order our food from the menu and it is brought out to us (perhaps by a human?). Walking into a bus station would automatically D/L the bus time tables, etc.

In a way, It needs to make (or to appear to make) everything more convienent. Is checking, my 2 mail boxes and my 3 Email boxes easier? No. But it feels easier.


by jove you've got it! that's exactly the sort of thing i was getting at. an integration of real life and the virtual world, made to appear as seamless as possible. you wouldn't even have to walk into a restaurant. you could say, "PDA, i'm hungry. what are the specials tonight at nearby restaurants?" the bus station wouldn't just download the schedule; it'd show you exactly where the next bus is (GPS tracking) and even how full it is. and actually, UCSD's shuttle services have GPS tracking tied into them, so with an internet connection i actually can see where most of these busses are at a given point; check it out: WWW Link (click on 'track it live' and look for green dots or arrows).

your point about it appearing to be easier is also a big one. when everything works right, maybe it even really is easier. but how often do things work right? how many more occasions for human error would a system like this offer? how much harder would it be to get simple things done if this system went on the fritz?

but even when things do work right, there's still a trade off. it's been my observation that just because you can do something faster doesn't mean your life is easier. generally when people perceive that something shouldn't take long, or will now take less time than it did before, they expect you to do more in total. workplace is the perfect example. i try never to appear as efficient as i really am. if i did, my bosses would just give me more to do. just because i can finish task X more quickly than they think i can doesn't mean task X is easier or less work.

i think people can be much the same in their personal/social lives. people, at least people my own age, act like there's something wrong with me because i don't want to go out at least once a week. i've always known that i'll have to pair writing with something else in my life to actually make money, but people are often surprised to hear that that other thing could be homemaking: yes, i think i could actually be happy as a homemaker, but a big part of that is the attraction of not spending so much of my energy on work. the general mentiality seems to be, "don't you want to do more with your life?"

anyway this is getting a little off topic. i think two appealing possibilities for characters in a world like this could be: someone who purposefully "un-plugs" from the system and starts seeing the world through his/her own eyes without all the virtual embellishment. the other would be an exceptional hacker: someone who has almost limitless ability inside the system, but who was no one exceptional outside of it (and the whole double-identity thing is a fairly interesting theme in itself).
Reply #930 Top
Sorry for the delay, Quals were this week so I was a little pre-occupied, lol

i think two appealing possibilities for characters in a world like this could be: someone who purposefully "un-plugs" from the system and starts seeing the world through his/her own eyes without all the virtual embellishment.


One interesting alternative to this would be a world that is so used to this level of integration breaking down. Say an X solar flare (I believe that is the largest class) knocks out the future internet satellite systems responsible for moving data or somethign to that extent.

People might have to read maps! Or talk to eachother (no IM! Oh no!). But jokes aside, I'm sure everyone has had a moment when moving where for a week or so, they have no cable, phone, interent, etc.

In a world even more dependant on the internet and technology in general, there's quite a bit one can do with that character wise; From the "unplugged" character who really doesn't notice (or is suddenly looked up to), to the total dependant who thinks their life is at an end.