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#51 Re: Human missions » The reason to go to mars - Going to mars is not a waste of money » 2005-05-12 20:45:34

Deleted a post. Guess I was carried away by my old rethorics while adding little of substance.

#52 Re: Human missions » The reason to go to mars - Going to mars is not a waste of money » 2005-05-12 08:08:25

Wow, I wonder whether Robert Zimmermann reads the New Mars Forum? Felt as if I recognized elements from my posts down to the very sentences.
:laugh:

On the other hand, his are only the natural conclusions. cool

#53 Re: Human missions » The reason to go to mars - Going to mars is not a waste of money » 2005-05-11 14:39:47

Oh yes, I forgot. Shaun, the gravity discrepance:

As for spending 5-7 years on Mars and then returning to Earth, I'm considerably more confident that this won't be happening in the near future. The gravitational difference will be too great to allow acclimatized 'Martians' ever to return to Earth, unless medical technology produces a comprehensive and radical solution.
   I think living on Mars for any more than a couple of years will mean living there for good.
   Just some thoughts.

Hm, so you say. I was of the impression that irreversible harmful effects due to low gravity started being important when you approached micro gravity, and that 1/3 Earth gravity would be quite okay after an initial readjustment. Could some additional light be shed on this?

If they can't take 5 years on Mars, how long then can people practically stay there? I find the one-way ticket to Mars solution simply outside the realm of reason. Who would ever sign up for life confinement in a dusty unbreathable cold desert? Of course you'd have to let people return to Earth. Dull red colours everywhere outside a cramped dome and cave complex forever. No, it's a definite no-no.
sad

#54 Re: Human missions » The reason to go to mars - Going to mars is not a waste of money » 2005-05-11 14:25:54

SpaceNut, in situ resource utilization has been a cornerstone of the Mars Direct plans from day one. The Sabatier reaction for example has featured prominently in Zubrin's writings all along.
I naturally counted on it when writing my message. Interesting article though.
cool

#55 Re: Human missions » The reason to go to mars - Going to mars is not a waste of money » 2005-05-11 13:54:08

Hello Cindy, nice seeing you too. Haven't got that much time to spend on New Mars nowadays, but I'm still here lurking around regularly from time to time. Unlike you, I'm simply not that proficient at multi-tasking, I guess. I'm so happy you liked my post! I just thought the issue needed some sort of balancing.
smile

And hi Shaun. Well, as far as fully terraforming Mars in a thousand years is concerned, I'm simply relying on Zubrin. One mustn't forget I've studied history, religion, philosophy and some economics. I really know nothing about natural sciences, so who am I to judge. Anyhow, as far as I can see, the high CO2 levels won't be a problem with oxygenizing the atmosphere since most of it will be eaten up by blue green algae in any case (CO2 being the main feedstock for photosynthesis). Actually, we might well end up with a situation of CO2 scarcity rather than excess, because the transformation of carbon dioxide into oxygen will also lower planet temperatures significantly. That is, unless we continously add in extra greenhouse gases during the process.

I'm not sure Zubrin deals with the need of buffer gas in The Case for Mars. In fact, I think he only takes the 500 mb to achieve terran atmospheric pressure into account, and thus you might be right it would take longer than a millenium (or more specifically 900 years) for this reason. Nitrogen shouldn't be a blocker on the other hand. There ought to be copious amounts of it locked into the Martian regolith in the form of nitrates. The only reason we haven't  located it it's because the Viking Landers weren't equipped to find it. That doesn't mean it's not there or scarce in supply. The argon is another matter and I really have no comment on that. Perhaps we should ask Karov? After all, he appears to be heavily into terraforming.

Tristar, I agree we need a well thought out interplanetary transportation system somewhere between Star Trek and Apollo capsules as soon as we go beyond the expendable rocket stage, which nevertheless is good enough for the initial landings on the Moon and Mars. What I don't agree with is building spaceships on the Moon. It is simply a horrendous proposition for the simple reason that there is nothing there at all right now. You'd have to build everything from scratch, and rocket tech just isn't like manufacturing fizzy cans. There would perhaps be a point to it in some distant future when we were constructing interstellar vessels going to Alpha Centauri and 61 Cygni, but that's only because we would then be speaking about Battlestar Galactica scale ships in real life and the infrastructure to do it would be assumed to be in place.

Everything we need: materials, expertise, capital, machinery, workers and comfy planetary conditions are on the contrary confined to our little blue dot for the foreseeable future. Also, current PGM output is allegedly about 120 tonnes per year. Say demand would increase by a magnitude. That still wouldn't justify a fleet of Super Stardestroyers that need being constructed in orbit/on the Moon. It could require a fleet of much smaller reusable spaceships, however, i.e no larger than can be lifted into space by launcher.

So what do we need to make space travel a regular feature (and get those metals back down here)? After hanging around this forum for some time, this is my conclusion. We need:

1.) SSTO's between Mars surface and Mars orbit.

2.) SSTO's between Earth surface and Earth orbit.

3.) Interplanetary liners between Mars orbit and Earth orbit falling into two main categories:
a) High Isp, artificial gravity passenger ships, piloted, for example GCNR.
b) Lower Isp cargo ships, unmanned, down to solar sails in complexity.

4) Earth orbit to Lunar surface craft.

5) Perhaps some special Earth orbit to NEO and Mars Orbit to Main Belt ship class. Such ships could perhaps carry both Earth imports as well as propellant (from water) for both interplanetary liners and SSTO's for the (Earth) surface return trip.

All of the above would be manufactured on Earth, save perhaps for som final in orbit assembly. Thus, we also need:

6) Superheavy expendable terran launcher.

#56 Re: Human missions » The reason to go to mars - Going to mars is not a waste of money » 2005-05-10 17:24:27

I believe the discussion is too much either or. Either it's nothing but science robots until Mars has been fully terraformed (which will take a thousand years) or it's 50,000 permanent settlers before the end of the century.

I would rather suggest a gradual, organical transition. Initially, no one will go to Mars (and much less anyplace else) to take up permanent settlement and have babies. The Solar System is not and never will be the New World. What could happen are people signing on for 5 or 7 year contracts to work on Mars. In exchange they will receive numerous benefits for the rest of their lives which they supposedly would spend on Earth. Think of it as a sort of professional military service (but for loftier goals).

What will set off Martian settlement will be spontaneous responses to economical needs, and in that sense it's really just an organic continuation of the in situ resource utilization used by the early science and mining operations. This of course presupposes an environment which offer several potentials for indigenous production, like Mars does and the Moon does not (the latter most likely to forever remain more of an oil rig than a community, provided there is anything to mine practically at all).

At first, almost everything will be shipped from Earth, that's only rational, but it's equally rational to switch to indigenous production of as much as possible as soon as means become available and demands appear. Agriculture, livestock and fishponds will in turn create demand for bricks, plastics, glass and steel. Suddenly, you not only have an agricultural sector, but a metals, ceramics and petro-chemical industry as well, which unlike the export sector is entirely directed towards "homemarket" consumption.

New niches will prompt the need for more people and will create incentives for people to stay longer and perhaps eventually even to bring up children on Mars. As long as the right to return to Earth is guaranteed and rewards are affluent, recruitment will not be a problem. If you do it right, in other words, tying it to governmental regulation, Mars service will be seen as possibilty, not a predicament. More people will in turn create needs for more construction material, various forms of manufacture, maintainance services, communications, improved living conditions, entertainment, you name it.

This is physical economy, the only real economy worth paying attention to, i.e the links that tie different sectors together and give rise to and possibilities for new sectors to expand. That is what eventually will turn a semi-permanent presence into a permanent settlement, but it will happen only at a pace and scale that correspond to actual needs, i.e organically. It will never happen because someone wants to send 10,000 people somewhere in a colony ship in order to test his latest idea of the "auto manufactured" city.

#57 Re: Not So Free Chat » Should NASA be honest about its Founding Fathers - A NASA built by NAZI scientists & Tech » 2005-04-25 05:10:28

But is it ethical for NASA to drop a big red sticker over the website that pretty much voids the fact that a majority of rocket science was achieved through the NAZI program on something like the NASA centennial projects that needed truth and not propaganda.

Okay, that's one page, albeit at NASA.org. I have seen other sites and books that go much more into detail on von Braun and the origins of the US rocket program. I believe even a simple sweep across Wikipedia will do. We are not dealing with any big secrets here.
Do you have a direct link to the page you claim is glossing over NASA history?


The truth is that Von Braun was like all scientists, arrogant (perhaps even unethical) and willing to work with any regime if it meant furthering their own interests.

Maybe, but I don't think he was compromised in starting to work for the United States in any way. The Third Reich was gone and America had to step in to safeguard what remained of Europe from Soviet aggression or world revolution, whether they liked it or not. In this scenario, von Braun's contribution to the New Look was a service to the United States as well as to Germany, even though this was necessarily nuclear, in much the same way as any German who tried to recollect the broken pieces of a country and reconstruct some sort of existence for themselves.


Trebutchet wrote:
And they were completely correct in concentrating on strategic bombers as well.

Naturally.


If not for bureaucratic idiocy that ended up getting the thousand-odd missiles they had thrown out, you could have had missile-armed Mustangs taking on Me 262's in the closing months of the war. The original SAMs could have been deployed, as well, but fudning was frozen until the kamikaze threat suddenly appeared. They would have been deployed at some point during 1946 for the invasion of Honshu, had that been neccessary, though.

Interesting. The Me 262 was armed with some sort of guided missile as well I believe, but I've forgotten about the details. This highlights that rocket research actually has several applications next to nuclear weapons and space exploration. Even the "Panzerfaust" infantry anti-tank weapon I gather was in some ways a spin-off from the field.
Perhaps "Gorgon" was axed due to the virtually non-existant air threat at the end of WWII? Thousands of US anti-aircraft personell in the European Theather of Operations for example, were transferred into infantry replacements during 1944.

#58 Re: Not So Free Chat » Should NASA be honest about its Founding Fathers - A NASA built by NAZI scientists & Tech » 2005-04-24 20:13:04

They were all amateur inventors, doing their own thing, in a world (like ours) in which politicians were not interested in the potential of the invention process if the prediction of future success was more than the next election away. (Thank God for that, in the case of the German Nazis under Hitler, who was even more short sighted, in spite of being "Chancellor for Life.")

There was nothing short sighted about Germany not funding rocket research in an all out fashion. They simply had no substantial interest for such a thing. The Luftwaffe was primarily centered on army ground support and would have found little use for a primarily strategic weapon such as a large scale rocket. Only the Allies (predominantly Britain) were preparing for large scale strategic bombing campaigns during the interwar era, and could thus have had the incentive to develop intercontinental ballistic missiles, although they did not, betting on the strategic bomber instead.

Rocket research originally carved out a niche in Germany because the Versailles treaty had forbidden development of artillery systems. What happened was that later on von Braun managed to sell the A4 Project to Hitler and Speer during the war. Speer tells about in his memoirs, describing von Braun as a man who was good at convincing. The context was one of retaliation and the desperate need to counter the Allied air offensive which was bombing German cities to bits day and night. Hence the labels V1 and V2, for "Vergeltung" (=retaliation) which Hitler came up with.

Smearney, to think it's bad in some way because it was "NAZI" is not understanding anything about the circumstances. The way the Germans saw it, those who were opposed to peace were basically to be found in the Allied camp. von Braun naturally did what he could to serve and defend his country, which he had every right to do besides being his duty, although he might much rather have wanted to design spacerockets under peaceful conditions instead. There is even a famous contemporary von Braun quote to this effect. As far as NASA is concerned, I think it's rather surprisingly open and honest about the German importance for its spaceprogram, actually, including the horrible conditions related to the Mittelwerk-Dora slave labour camp.

In the end, the V-rockets were of course nothing but a huge waste of resources. The Amerikabomber largelly falls into the same weird category, the difference being that it was even more pointless and never recieved any notable backing, basically because it was nothing the Luftwaffe or the war effort needed or wanted.

#59 Re: Science, Technology, and Astronomy » Einstein Year - A year celebrating physics » 2005-04-18 11:33:23

Oh, don't be sad, Cindy. I didn't mean to sound dead serious. (Hard coming off on the right tangent in foreign languages sometimes.) Thankfully, there are a lot of cultures within academia. Some of the best are probably within natural sciences, I guess.

#60 Re: Not So Free Chat » Political Potpourri IV - Continued from previous » 2005-04-18 10:34:32

We all have our biases. For example, asserting that the "regime lied" rests on an assumption of intent. Acting on bad intel isn't lying, merely an error.

You seriously can't believe this crap yourself. You're much too smart, Cobra. Missing troop movements preceeding the Ardennes offensive, that's bad intelligence. Inventing mobile WMD launch sites in order to explain their obvious illusiveness is not bad intelligence, that's hoaxery, pure and simple. I never believed for a second that Iraq was a threat in any way and I was right.

But again the real question isn't "why did Bush think Iraq had WMDs" but rather "where the hell did the WMDs we know he once had go?" Questions that need answering.

Why? Maybe Hussein shipped the last can of mustard gas off to Nigeria? Who cares?

Despite the fanfare that accompanies it, no one ever spills blood for purely altruistic reasons. Yet sometimes we can act in our own interests and help others at the same time, the two need not always be in conflict.

That's not the issue here. The point is that the public is kept in the dark regarding the real reasons why all this is going on, whether altruistic or not. I believe a people has the right to know why they are fighting. If it's a purely amoral case of "you've got what we want" and everyone's in on it, then fine.

That said, I suspect that this conflict has layers upon layers that we mere citizens can only grasp a vague inkling of. What we want, what they want, what we think they want and vice versa, when "they" are in fact "them", each with their own agendas and we with ours.

You still seem reluctant to think in terms of the possibility of dog wagging.

#61 Re: Science, Technology, and Astronomy » Einstein Year - A year celebrating physics » 2005-04-18 07:45:33

Article mentions how times have changed, today he'd have had a harder time being heard, etc.

Actually, today he would have been laughed right out of the seminar. The astrophysics community before Einstein wasn't a mystic sect basing its beliefs on an a priori defiance of logic.
:;):

#62 Re: Not So Free Chat » Political Potpourri IV - Continued from previous » 2005-04-18 07:20:39

But who knows, maybe bin Laden really thought a public trial in an Islamic country for an attack against America would really fuel the fires.

It would have made quite a lot of sense if bin Laden wasn't guilty of 9/11 and perfect sense for the Taliban all along. I used to marvel at their immense stupidity when not extraditing Osama, or did I smell a rat already at that point? Extradition to Pakistan would in any case practically mean further extradition to and standing trial in the United States.
???

But sense and sense, it didn't make one bit of sense for bin Laden to condemn the 9/11 attacks and claim his innocence either, which he repeatedly did to begin with. Wasn't this guy supposed to be a terrorist?
???

My bullshit detector is perhaps more unbiased than yours. If the regime lied about the need to invade Iraq - meaning we don't know to this day precisely why the US are in Iraq - they could just as easily have lied about Afghanistan.


But no sense crying over spilt blood at this point, even if everything was wrong removing Saddam and the Taliban from their respective countries is for the best in the long run. Or so my fellow arrogant American imperialists keep saying at the secret meetings.

That would all depend, I guess, on whether the blood spilling is really done with your best interest in mind or someone else's.

Good commenting regarding the Japanese, Europeans and guilt. Indeed, one wonders why politicians aren't smart enough to do just that, acknowledge ancient misdeeds without taking personal responsibility and move on.

#63 Re: Not So Free Chat » Political Potpourri IV - Continued from previous » 2005-04-18 00:13:40

Came over a slightly interesting article the other day:
http://www.scoop.co.nz/stories/WO0110/S … S00046.htm

If true, this would mean that not only were the reasons for the war in Iraq fraudulent, but there never existed an honest reason to invade Afghanistan either.

#64 Re: Intelligent Alien Life » Cydonian "Pyramids and Face" II - What is your opinion? » 2005-03-28 21:48:57

Not that I'm sure the thread needs my reply. The most coherent feature of the face is actually the 'foundation'. As such the slopes of the foundation look exactly the same as several other mesas in the region. Consequently, the face is a mountain.

Just my two pennies.

#65 Re: Human missions » Selling out Mars and Science? » 2005-03-28 21:28:00

If I were you I wouldn't take Bush's space initiative too seriously. It's most likely nothing but hoax and vapour like everything else the current administration stands for anyway, and will be quietly forgotten in a few years.

If you wanted a space program you don't need to print money either and thus fuel inflation (which I gather is what is meant by "FDR" policies). Slashing US defense expenditure in half would do nicely as there is simply no need for the present overkill capacity maintained by the US military. The threat of terrorism is imaginary, and by itself such a silly concept that it could only have been devised according to the notion that if you're going to lie, you should lie really big.

#66 Re: Not So Free Chat » Corporal Punishment on Mars - Should it be Permitted or Not? » 2005-03-24 08:03:51

If blacks are executed by lethal injection at five times the rate of whites, perhaps the "big age" you speak of has been clever enough to clothe himself in a uniform.

Uh-ho. big_smile
Let's just say I'm a proponent of legal equality.

And some on the "Left" merely seek to resist the "big ape" who has falsely clothed himself in the colors of the State.

And in my book that would mean they are not really leftists anymore, but everyone is free to label himself the way he feels fit, I suppose.
big_smile

I agree with this:

Quote
In the end, civilisation is nothing but power used to protect the community against power used to destroy it.


And we must also beware wolves in sheep's clothing.  :;):

Indeed. Well, the eternal question of practical philosophy, I guess.

#67 Re: Martian Politics and Economy » Who Governs Mars? - Corporate Warlords vs. Commonwealth » 2005-03-24 07:46:17

I'm putting fasces on mine.   big_smile
And big shark mouths.

Wow.

I'm thinking imperial silver eagles holding fasci in their claws. What do you think? big_smile

#68 Re: Martian Politics and Economy » Who Governs Mars? - Corporate Warlords vs. Commonwealth » 2005-03-24 07:35:30

Not if colonization and cooperation is beyond the abilities of any individual state.

It isn't. The US could do this on their own if they wanted to. The day they get their tumbs out of their asses, more power to them.
European nations must possibly co-operate to pull it off, but I have no problems with that, because basically we share more than divide us. It's just a matter of centralizing an autonomous executive, and if Norway for some reason refuses to share in the glory, well, I won't force them to contribute.

Why would you as a citizen responsible for governing yourself surrender that to be governed by others.

Ever heard of the social contract? Yep, that's the reason why. The state offers protection. As individuals, we are not responsible for anything. Responsibilities are the consequences of other people.

This is an absolute right from which extends the frail ethics of your own interpretations of human rights and Democracy. The penalty for violating this right is expulsion and isolation from all others.

Frankly, I don't care a penny either for your "human rights" or so-called "democracy". I care for the civil rights of my citizens and wise government. Besides, I want my own European eagles painted on the spaceship fuselage, not the tasteless symbol of some global democratic tyranny, thank you.
smile

#69 Re: Martian Politics and Economy » Who Governs Mars? - Corporate Warlords vs. Commonwealth » 2005-03-24 07:11:31

Isn't it amusing?

How people with grand plans like these, be them neocommie utopians or free market evangelicals, always seem to reason that at least their solution is freed from the oppression of "nation states", while in reality nations are one of the few things for which ordinary people will act voluntarily out of love or duty.
smile

#70 Re: Not So Free Chat » Corporal Punishment on Mars - Should it be Permitted or Not? » 2005-03-24 06:33:29

It's so easy to take the worse of men misconduct to preach for capital punishment, neglecting the fact that murderers and rapists are always somehow mad peoples at the moment of their crimes, no matter their are clever or not.

Why would you suggest this? Rape has a long history in natural biological evolution. Big apes do it all the time, and big apes among humans do it as well. It's not a sign of illness, it's a sign of strength, the acting out of a primitive mind, power being abused in a voluntarily manner against the defenceless because the perpetrator is able to. It's an act of the will. It's natural.

Punishment should be metered out to serve two functions, settling the scales (as Cobra puts it), you can call this revenge or restoration of honour if you like, and as a cleansing of the social body. On a deeper level, these two are actually intertwined. In the end, civilisation is nothing but power used to protect the community against power used to destroy it. Believing it could try for "rehabilitation" on the other hand is pure hubris, in my opinion (which coincidentally might well be suspected of hiding a sociopathic disregard for the victim - I have come to believe this in fact is a typical trait of the left. They always side with the predator).

As for the soul of the criminal, I can only leave that to the Allmighty. Our responsibility is (or rather should be) to the victim. That this isn't so in our western legal systems is simply a disgrace.

P.S: Some sort of abortion must be allowed in any case. I wouldn't want to force a woman to bear the child of a rapist.

#71 Re: Interplanetary transportation » What's the Biggest Rocket Concievable? - How big can you really build it? » 2005-03-23 15:34:55

This is a simple question. Speaking of ordinary chemical expendable rockets, if you wanted it big, I mean really big, how big could you do it?

Let's say either from a practical or theoretical viewpoint?

#72 Re: Not So Free Chat » Greece Joins ESA » 2005-03-23 15:01:49

Whatever it is, we'll just have to make sure it won't be a minus. And I don't believe it will.

*Low pitched mumbling*: Now, if we just could get the into some bilateral partnership with the Russians, we could help funding a recommittment to that monster Vulcan rocket they were working on in the 70's... and we could setup a Euro-Russian Mars Direct program, hmm...

http://k26.com/buran/Info/Hercules/vulk … ulkan.html

#73 Re: Martian Politics and Economy » Who Governs Mars? - Corporate Warlords vs. Commonwealth » 2005-03-23 14:24:09

Make the future a better place for as many people as possible or stay on Earth.

That's my opinion.

--Cindy

Hear, hear! smile

In my opinion, total plans like these are also pointless because when/if Mars settlement ever gets off the ground it will simply be a matter of political entities on Earth staking out the area they settle. Mars will never have a single government, independent or not, but several administrations, linked to their country of origin. 19th century imperialism (but without the oppressed) is a better metaphor than either Columbus or Charles Fourier.

And that's how it ought to be.

#74 Re: Not So Free Chat » Greece Joins ESA » 2005-03-23 14:09:13

Nice, although it's mostly just a formal procedure. smile

#75 Re: Human missions » Zubrin on Moon, then Mars - Three essays, one link » 2005-03-18 10:44:34

I really get tiered of hearing this. You don’t fly to the moon and then fly to mars. The lunar ship would meat the earth ship in earth moon space and then go to mars.

I believe this is incorrect. Just going from LEO to lunar orbit would still require a Delta V of 4.1 (3.2 for trans-lunar injection + 0.9 to capture into Low Lunar Orbit). This is practically the same as going directly from LEO to MLO, which is generally described as a Delta V of 4.2 (4.5 if you include landing on Mars).

If you add the Delta V for going from lunar orbit to Mars orbit and the extra infrastructure and logistics on the Moon, it appears to be a fundamentally flawed proposition.

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