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#2601 Re: Civilization and Culture » Unpleasantries - Macabre business -- » 2002-07-09 06:13:10

I believe cyanide pills cause death quickly, with muscle twitches and frothing at the mouth. But is it really painless, as Cindy suggests?
   Maybe it's just that nobody has been available afterwards to report that it hurt like hell!!
                                            sad

#2602 Re: Human missions » mars habitation - where would everyone live » 2002-07-09 00:25:18

Hi lazer technicion!
   To avoid unnecessary repetition, you might like to go to Acheron Labs, go into Life Support Systems, and check out "We need a brainstorming session!" and "Domed habitats ...". There has been quite a bit of interesting discussion about this very subject already.
   But there's always room for more input! The more the merrier!
                                             smile

#2603 Re: Unmanned probes » Europa » 2002-07-08 18:24:04

Thankyou, Canth, for clearing that up. I suppose what you have said should have been obvious to me ... in view of the latest opinions that the Europan ice crust is probably much thicker than we were hoping. (Was the figure 18 kilometres, or was it more? Sorry ... can't remember now.)
   Still, you could happen to be in your Europan ice cave just as the crust decides to shift its weight a little bit!! Then, if I were there, despite the fact that I don't have a uterus (a nod and a smile to Cindy) I think I'd probably get "hysterical" anyway!!
                                          big_smile

#2604 Re: Human missions » Russia proposes 2015 human mission - That's a little more like it! » 2002-07-08 18:08:21

I agree with Mark S that Mars Direct takes a lot of beating.
   I don't know what it is with the space community, but there seems to be resistance to just accepting Dr. Zubrin's plan as being the best.  O.K. ... Modify it a little if better technology becomes available. But it's essentially a simple plan with built-in redundancy for safety, and it allows for a continuing and expanding presence on Mars. Plus, it's relatively cheap and requires little extension of currently available hardware.
   Why is it that otherwise sensible and practical people like the Russians (at least as far as space is concerned) seem bent on rehashing Mars plans which have already been found wanting?
   Even NASA had to take Mars Direct and 'fiddle' with it!
   It's like everybody is determined that they won't use MD because they don't want Bob Zubrin to get the credit for coming up with such an elegant plan while they, with all their resources,  have spent 30 years producing nothing practical at all!
   Does anybody else get the same kind of feeling about this?
                                         ???

#2605 Re: Unmanned probes » Europa » 2002-07-08 06:40:46

Phobos mentions the Artemis Society and its assumption that there will be "large pockets of dwellable space in the ice" on Europa to afford explorers some protection from radiation.
   Surely the jumbled, cracked and broken slabs of ice we see in pictures from Galileo are an indication that the Europan crust is unstable?
   Would you sleep well in a creaking ice cave deep in the Europan crust?! I'm pretty sure I wouldn't!
                                      sad

#2606 Re: Civilization and Culture » The Martian Dead - What's to become of them? » 2002-07-05 07:34:52

I've read through as much of this exchange as I can and I've decided that Clark and Cindy are unlikely to reach agreement.
   Try this on for size: Recently a middle-aged male decided to have sexual intercourse with an 18 month old baby girl. The injuries were such that the little girl died an agonising death. The pain that the parents of that baby girl felt when they learned what had happened is impossible to imagine. The torture that will go on in their minds for the rest of their lives can only be equated with the suffering of the damned.
   The man's decision to do what he did was intrinsically bad, the agony of the baby girl was intrinsically bad, the suffering of the parents is also intrinsically bad ..... BAD, BAD, BAD !!!
   Clark can contrive sophisticated arguments until he turns blue, but if he cannot see that no sentient creature with the ability to feel pain could construe this nightmare event as anything but BAD, then I guess I'll never understand what makes him tick.
   If that makes me unsophisticated, then thanks very much, but I'd rather stay that way!
                                           sad

#2607 Re: Civilization and Culture » Martian Security - Should guns be allowed? » 2002-07-05 02:56:12

Hi Cindy!
   Sorry if I've opened a can of worms with the nature/nurture thing! And I do know where you're coming from with the loving environment for kids advice ... couldn't agree more.
   Already, I think my audacity in expressing a personal opinion about how much is nature and how much is nurture has elicited awe and admiration from Clark, who writes: "... at
least Shaun is brave enough to offer his well founded opinion, which I'm sure is based on numerous years of experience and untold research ...".
   He flatters me, I think, in view of his own far superior courage. To be in a position to dismantle almost anyone's opinion on almost any subject and to explain to them, with such incisive precision, why their premise is entirely baseless, requires more bravery than I'll ever have.
   Clark .... I salute you!!
                                            big_smile

#2608 Re: Interplanetary transportation » Mars Direct Usable For Longer Range Exploration - Mars Direct and Manned Jupiter Expeditio » 2002-07-05 00:19:08

Sorry about Callisto's radiation environment. I know Europa is a no-go area and, when Phobos seemed so certain that Callisto was also dangerous, I didn't bother to check.
   It doesn't matter much, though. You still haven't addressed the problems of radiation exposure in transit and the psychological difficulties of confinement for 4-plus years.
   It's a big enough worry with the 6 month trip to Mars ... and that's with the prospect of a very Earth-like planet to look forward to, with hills and  old river valleys and the occasional cloud in the occasionally-blue sky!
   I think we'll have to leave manned trips to the gas giants until Ron Koczor at NASA gives the Podkletnov Gravity Drive a man-rating!! Might be quite soon now!
                                      tongue

#2609 Re: Interplanetary transportation » Mars Direct Usable For Longer Range Exploration - Mars Direct and Manned Jupiter Expeditio » 2002-07-04 19:24:47

Aside from the radiation problem at Callisto, you've got people cooped up in a high radiation environment for at least two years each way as well.
   Even ignoring the radiation, what about the psychological problems of 4 years-plus in a tin can!
                                      sad

#2610 Re: Martian Politics and Economy » The Succession of Empires - Mars will trump the U.S. » 2002-07-04 00:13:07

"Australia could have been another America save for the fact that it lacked economic opportunity based on raw commodities ... ", notes Clark. Sounds like such a dismal failure on Australia's part, doesn't it?!   big_smile

   Perhaps surprisingly, Australia is not as bereft of resources as a cursory reading of Clark's post might lead you to believe. In fact Australia:-

1. Is the world's third largest iron-ore producer.
2. Provides 30% of the world's output of bauxite and 1/5 of
    the world's alumina supply.
3. Has for many years been one of the world's largest
    producers of lead and zinc
4. Has enormous deposits of both black and brown coal -
    estimated black coal deposits of 600 billion tons.
5. Has large reserves of uranium. But the 'greenies' have
    successfully stifled production for ideological reasons.
6. Though its oil and natural gas production is currently
    declining, has potentially very large oil and gas deposits
    which have yet to be developed.
7. Exports wheat, wool (around half the world's supply), sugar,
    lamb, beef and veal, and some of the world's best wine  smile

   Australia may not be the economic equal of America, but she hasn't done badly when you consider that her population is currently 19 million .... about where America's was in 1845.

   In other respects, Australians wouldn't want to live in "another America". Her infant mortality rate (per thousand live births) is 5.3 while America's is 7.1 . And the average Australian can expect to live nearly two years longer than the average American (78.9 years versus 77.1)
   Australia has far less violent crime, a warmer climate, the Great Barrier Reef, and seemingly endless and often deserted surf beaches. Many Australians count these as valuable "commodities"!
   I am Australian and I live in Australia. My job has meant talking at some length with literally tens of thousands of my fellow Australians. And, you know, I've honestly never met even one who wanted to go and live in America!
   Not that I've got anything against the good ol' U.S. of A.! Quite the reverse .... I'm an admirer of American get-up-and-go and I'd kill for an American space budget here!!
   But I know Clark is critical of "oversimplified models" and I felt duty-bound to help him avoid falling into the trap of using them himself.
                                           wink

#2611 Re: Water on Mars » H20, where'd it go? - What happened to Marsian water? » 2002-07-03 22:01:46

Yes, JGM! I'm sure you must be right .... to borrow a phrase from "Jurassic Park", 'life finds a way'!
   Maybe I worry too much!!
                                         big_smile

#2612 Re: Human missions » Research Facility Mars Moon?! - A misprint maybe? » 2002-07-03 07:45:06

I think RobS is correct to recommend using Phobos and Deimos as staging posts.
   I know it looks like a detour, and I'm not here to advocate fooling around .... I want to get to Mars at least as much as the next person. But what RobS is trying to point out is that our biggest problem is fuel. We know there's fuel here on Earth and we know we can make it easily enough on Mars. In fact, we can probably even make it from purported water ice at the lunar poles. But the problem with all these 'gas stations' is they lie at the bottom of gravity wells of various depths.
   The beauty of the Martian moons is that they have no significant gravity and yet they almost certainly have volatiles we can make rocket fuel out of. This means we can fly up and down from the surface of Mars to orbit and back again indefinitely, without ever having to worry about carting fuel from Earth or engaging in dangerous aerobraking in the Martian atmosphere. And, as RobS said, getting from LEO to Phobos or Deimos is relatively undemanding of fuel in the first place!
   In view of these facts, the moons of Mars are really a gift of nature! They can make return trips to Mars very much easier and cheaper. We'd be crazy to pass up such an opportunity!
   Incidentally ... a warm welcome to you from me too, Bruckner!
                                            smile

#2613 Re: Human missions » Alternative to the Ares Rocket - I call it "Atlas-Barbarian" » 2002-07-03 07:21:55

Yeh, that goes for me too! Is this "initiative" all in Richard Hoagland's mind or does it originate elsewhere?
                                     :0

#2614 Re: Human missions » Merits of Mars Direct - Is it too optimistic? » 2002-07-03 07:13:25

So, if 5 is good for group dynamics, how did the muslims come to the conclusion after centuries of trial and error that the ideal number of wives in a harem is 4?
                                    :0

#2615 Re: Terraformation » Mars as a base camp - Why we shouldn't terraform » 2002-07-02 07:21:33

Well said, HeloTeacher! I'm with you!!
                                          smile

#2616 Re: Terraformation » no real reason to terraform - title say's it all » 2002-07-02 07:16:56

I believe the larger O'Neill colonies were in fact enormous cylinders with radii of maybe 5 kilometres and lengths of 20 kilometres and more.
   They were to be made of raw material from the moon and/or the asteroids and rotated about their long axis to create artificial gravity on the inside surface. There were to be several metres of soil on the inside surface in order to grow crops and trees and some of the pictures I've seen even showed rivers flowing along the length of the colony! Some were big enough to have cloud formation and possibly rainfall, but on a clear day, you could look up and see the tops of the buildings and the trees and streams 10 kilometres away on the other side of the cylinder!! Long sections of the cylinder wall, at intervals around its circumference, were to be transparent and a mirror system would bring sunlight to the interior. Enormous blinds would block out the sun to simulate night.
   There were supposedly many advantages to living in an O'Neill colony which made it preferable to living on a planetary surface. I can't remember now what they were .... total climate control was probably one ... safety from earthquakes, volcanic eruptions, tsunamis etc. were probably some of the others.
   As for me, I'm not so sure. I think I'd miss the grandeur of nature you get on a proper planet; the mountains, the oceans, the icebergs, the deserts ... the storms ...
   Nahh!! Give me Earth or Mars every time!
                                        smile

#2617 Re: Civilization and Culture » Martian Security - Should guns be allowed? » 2002-07-02 01:48:05

Cindy exhorts us to "take care to try and raise QUALITY children".
   This raises the old argument about 'nature versus nurture'.
I've heard a thousand versions of the argument and the only certain conclusion is that the argument will probably never be settled!
   For what it's worth, my opinion is that 90% of what we are is programmed in at conception. The other 10% is the result of the way we're brought up .... which is not to say it doesn't matter, because it does! And we should all strive to see that all children get every chance to achieve their full potential.
   My point is that despite the best of nurture, the union of two gametes is the ultimate lottery and the eventual emergence of a misanthrope is probably inevitable. To this extent, I agree with Aetius, though I feel some of his pronouncements on the nature of mankind may be just a little overstated ("filled with greed and hatred and bloodlust"). Maybe not by much, though!!
   In other words, crime must ultimately appear in a Martian colony (despite Cindy's best intentions) and I suppose we'll have to deal with it somehow.
                                              sad

#2618 Re: Martian Politics and Economy » My political ideas » 2002-07-02 00:45:04

Hi oker56!
   Your political ideas are so beautifully simple and idealistic and I wish they could work. Actually I'm surprised Josh and Clark haven't eaten you for breakfast on this one!
   The most obvious problem with your system is determining who is "competent", as you put it. Most people who vote for one type of political party will be happy to inform you that the other party or parties are incompetent! In a simplified form, that's WHY we have to have voting. There's almost never unanimous agreement as to who's competent and who isn't!!
   The other fly in the ointment is that not everyone has the best interests of all the people at heart. Even if you identify someone as competent, you can't be sure s/he isn't sly, dishonest and self-serving .... and extremely competent at gathering more and more power into his or her own hands! Sad to say, but not everyone is pure of heart like you and me, oker56!
   Wherever there are people, there's politics. And politics is the dirtiest game in town because it's run by people. I think it was Mark Twain who said: "The last person in the world you should ever vote for, is someone who puts himself up for election."!
   As for your ideas about money, I'm afraid greed will forever blight your good intentions. You and I might be able to place the wealth and safety of the colony above our own desire for self-enrichment, but there will always be others at the mercy of their baser instincts. Some of them even end up as politicians!!
                                          wink

#2619 Re: Life support systems » "It's a bit chilly today" - Temperatures on Mars » 2002-07-01 18:31:03

Hi Cindy!
   In reply to your question, I think Antarctica in its winter months is routinely -50 deg.C or lower. I seem to remember that the lowest temperature recorded somewhere on Earth was about -90 deg.C .... this may have been recorded in Antarctica, but I can't swear to it.
   I believe that very little of Mars is consistently this cold or colder. Most of its surface manages to warm up to respectable temperatures at least during part of the Martian year. Though, as RobS points out, surface temperatures and air temperatures are not the same thing!
   I've seen some very interesting "time-lapse" thermal maps of the Martian southern hemisphere as the spring turns into summer. I was amazed to see that surface temperatures climbed above zero over most of the hemisphere .... down to about 75 degrees south!!
   Of course, the northern summer isn't as warm as the southern summer because Mars is currently further from the sun during northern summer. But the northern summer is longer than the southern summer for the same reason. Therefore, I suspect that up to at least 45 or 50 degrees north, ground temperatures should be capable of reaching positive territory during summer. Maybe in sheltered areas during high summer, ice in the regolith may become liquid for short periods even as high as 60 or 65 degrees north. But that is really just speculation on my part.
   I hope this has been helpful.
                                             smile

#2620 Re: Interplanetary transportation » Gravito-magnetic effect - "Breakthrough propulsion" » 2002-07-01 07:13:08

Putting all frivolity aside for a moment. Ron Koczor's time is almost up.
   Later this month we should be getting a report on the Podkletnov gravity-control device ... and I, for one, am good and ready for it!!
                                    smile

#2621 Re: Planetary transportation » Dirigibles on Mars - A practical means of transport? » 2002-07-01 06:58:03

Won't it help that Martian gravity is only 38% of Earth's?
   Also, if your dirigible is bigger, you can place a greater area of solar cells on its exterior for greater power to the engines.
   And, if you make this airship long and thin like a barracuda, you should be able to make good progress even against a strong Martian breeze ... always remembering that the low atmospheric density, which caused us buoyancy problems, is now acting in our favour by reducing the power of the winds.
   Another trick which may help is to take advantage of different wind directions at different altitudes. For example, if you wish to travel eastwards but the prevailing winds at low altitude are easterlies, ascend to an altitude where it is calmer or where the winds are in your favour. Katabatic winds driven by the topography may also be used to advantage in some circumstances.
   I'm sure we will soon learn how to navigate the skies of Mars in much the same way that we learned to navigate Earth's oceans.
                                         smile

#2622 Re: Human missions » Space and Humankind! - why we HAVE to go into space Big Time » 2002-07-01 06:29:12

Andy Kerr suggests that if we're the only intelligent life in the universe, and we die out, then the universe will have existed for nothing. ".... what a waste of a Universe."
   Let's not forget that beetles are not normally regarded as intelligent and yet there are about 300,000 species of them. There is only one species of Homo Sapiens Sapiens. This led one of the great philosophers (whose name regrettably escapes me) to conclude that "God is inordinately fond of beetles".
   Perhaps God's only concern is that beetles should survive. Maybe the demise of the human species would not be of the slightest consequence to Her. And the universe, full of the creatures God loves best, would carry on happily many billions of years after Homo Sapiens Sapiens is no more than a vague memory!
   In any event, the average species lasts from 4 to 10 million years, less than 1% of the time interval between now and when Earth becomes uninhabitable. Whatever life forms may be witness to the boiling of Earth's oceans, none will be anything like what we would describe today as human.
   Let's not worry about all that. Let's just go to Mars because, whatever else God may have intended when She made us, She obviously meant us to be curious. And that may be the only area in which we haven't let Her down ...... at least so far!!
                                           big_smile

#2623 Re: New Mars Articles » The urgency question - Could we lose our chance to go? » 2002-07-01 02:23:14

Hi Aetius and Cindy!
   I usually find myself in agreement with your comments and this topic presents no exception to that general rule!
   I am unimpressed by the notion of the "Noble Savage", which I regard as a fallacy. Native Africans, Americans, and Australians lived in harsh environments and were tough and uncompromising people. It is not usually given much publicity for reasons of political correctness, but the warfare between various indigenous tribes was frequent and brutal. Women and children were shown no mercy in these exchanges and the massacres were bloody and total.
   The idea that these primitive societies somehow engaged in environmental protection policies of a voluntary and self-sacrificing nature is, to me, "cloud-cuckoo-land" stuff of the highest order! Aetius cuts to the reality of the situation by pointing out that the environment was only spared because primitive societies lacked the means to affect it to any significant degree. Not so the megafauna here in Australia, though. We had giant marsupial fauna up until some thousands of years ago, and goannas (a kind of large lizard) up to 7 metres long! There is evidence that many such species owe their extinction to the hunting activities of aborigines. And I understand the mammoths and mastodons of Europe and America met a similar fate.
   I believe it was Isaac Asimov who argued, very persuasively,
that the only cure for too much technology is more and better technology! We can never go back to some imagined rural idyll where all is peace and harmonious interaction with nature .... because it was never like that in the first place!! It's a myth! Life was hard, brutal, and short. That's why we took the path to higher technology, to lift ourselves out of a harsh and grinding existence.
   The 'greenies', though many of their aspirations are worthy ones, are living a fantasy if they think that abandoning technology and progress is a viable option. If they oppose space exploration (and exploitation), then they are seriously misguided because, in the longer term, it represents an opportunity to locate industry off-Earth. It also offers a means of preserving life for the future in the event that an asteroid obliterates it here on our home world. Such blinkered and ignorant people must be opposed vigorously and, ideally, re-educated as soon as possible.
   I have tried to put across elsewhere in Forums the opinion that going to Mars is something we should do sooner rather than later. America and Europe currently have the ability and the wealth needed to establish a colony on Mars. But history shows again and again that the fortunes of nations can change in remarkably short time-frames. Even 30 years can make an enormous difference to the wealth of a country due to totally unforeseen circumstances.
   The US is talking about humans-to-Mars in maybe 20 or 30 years. She is obviously comfortable in her wealth and power and feels she has the luxury of time on her side. I hope she is right to feel that way but I'm afraid I don't share her relaxed confidence!
   If we have the ability to go to Mars, and we do, then let's get the show on the road .... NOW!!
                                           smile

#2624 Re: Meta New Mars » Should NASA credit Richard C. Hoagland? - Sign our petition! » 2002-06-30 02:49:57

I think that if Richard Hoagland's hypotheses are ever proven correct, and so far definitive proof is a long way off, he will go down in history as one of the most far-sighted individuals who ever lived.
   NASA probably already credits Hoagland .... for his outstanding audacity!!
   Not for much else at this stage, I suspect. And this petition will have no effect on that situation at all, PsychicCrab.
   The claims in the petition are outrageously premature anyway, so I'll have to take a raincheck on signing it. Sorry!
                                       ???

#2625 Re: Human missions » How Many Mars Mission Plans Can You Name - Mars Mission architectures » 2002-06-27 01:55:30

Then there's the kid in James Blish's novel, "Welcome To Mars". In his father's garage he invented an electrical gravity-control device which ran on flashlight batteries.
   His mission architecture for a Mars trip involved little more than a heavily-caulked wooden crate sprayed with 5 layers of epoxy resin and a layer of zinc oxide in silicone resin!! Onboard supplies consisted of a little food, spare batteries, and some 22 litre steel flasks of oxygen!
   Makes all those heavy-lift launch vehicles look silly, doesn't it?!!!
                                            big_smile

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