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#451 Re: Space Policy » Writing our politicians » 2002-06-30 19:22:19

Absolutely. When you receive an email, you can always ignore it or just write it off as being a fake or whatever. When you receive a letter, it's so much more genuine (especially because it costs money to send and produce) and not only does it demand attention, it also demands an individual reply. Plus, you can have a stack of letters which looks impressive physically.

Problem is, writing a letter takes more time and money than an email - which is both why people pay more attention to them, and why fewer people write them  smile

#452 Re: Space Policy » Creating a pro-Mars government » 2002-06-26 03:31:08

Sorry to take this off-topic for a bit (I know I should be setting a good example instead  smile ) but I saw a lecture given by some economists about the social security problem in the US, namely that the two youngest generations are soon to get a shock when their taxes go up to pay for pensions. What's the US going to do about this?

#453 Re: Human missions » Mission Risk Involving Mars Direct - Mission Risk » 2002-06-25 12:31:59

About sperm and ovary retrieval and cryostorage - I would think that it would be a very good idea for all long-term space travellers, considering that there is the (admittedly low) possibility of DNA damage from cosmic rays while in space.

#454 Re: Civilization and Culture » Martian Security - Should guns be allowed? » 2002-06-25 03:18:04

My mistake - I hadn't read your earlier post properly. I think that some kind of lethal weapons will inevitably become available on Mars, and it would be best to restrict them to trained police officers (so I agree with you).

China is certainly gearing up, but it's still quite unstable. It remains to be seen how they'll adapt to free-speech enablers such as the Internet (still heavily and improbably censored over there) and the US enjoys such a massive technological lead over any other country in the world that I doubt they'll try anything any time soon. Plus, Taiwan tends to be the main area of contention between China and USA, but things are looking good in that area now with hopes of peaceful reunifiction taking place in the future.

#455 Re: Meta New Mars » Forum Administrator: Phobos » 2002-06-24 16:40:27

On Thursday, I'll be going to San Diego and Washington DC until about mid-August. While I'll still have Internet access I won't be able to keep an eye on the forums as much as usual. Consequently, I've given Phobos forum administrator status while I'm away - this will allow him to move, delete, edit and change posts and topics within these forums.

I have full confidence in his ability to keep these forums running smoothly with the same kind of hands-off attitude I try to maintain, and I'm sure that all members will listen to him.

If you have any concerns, please PM myself or Phobos - I will still be checking the forums from time to time.

#456 Re: Intelligent Alien Life » Positives/Negatives as to Mars and Venus - GUTH Venus is positively worth an effort » 2002-06-24 16:27:52

I have got no idea what this has to do with Human Missions to Mars, and it smells to me very much like an intelligent alien topic (Venus as extrasolar - constructed? - object). So that's where it goes.

#457 Re: Human missions » I give up.... - Manned mission to Mars. » 2002-06-24 12:08:30

I'm all in favour of sending humans to Mars - I was just playing devil's advocate ("while I agree with all the sentiments expressed here...", "I can think of rebuttals for each of the points above...") - it's always useful to see how the 'other side' thinks.

#458 Re: Human missions » I give up.... - Manned mission to Mars. » 2002-06-24 11:18:25

While I agree with all the sentiments expressed here, let's look at it from the point of the US govt. and NASA (not that I necessarily agree with them):

o Humans to Mars is expensive. We could use the money on countless other things.

o It's dangerous. What happens if someone dies? The public will hate us.

o Robots are nice and cheap and people won't care too much if they crash. Plus, they actually do produce good scientific results, and they seem to keep most people happy.

o Space exploration is not in favour right now, and NASA can't do anything right. Just look at how they handled the ISS - if that can't do that, how are they supposed to handle a Mars mission?

o The public isn't that bothered about going.

So for them, there's no real urge to go. I can think of rebuttals for each of the points above, but even so they all have an element of truth in them, which is why the US government still believes in them.

#459 Re: Human missions » Listen Tuesday night to Hoagland and Zubrin! - Coast To Coast radio show » 2002-06-24 10:45:25

This should be a very interesting show - Zubrin and Hoagland together! I hope someone can find a transcript or synopsis of this.

I was looking around on the net for stuff about Hoagland the other day, not really knowing much about him, and I came across this article in Csicop about him:

In July 1990 on the "For the People" radio program Hoagland proclaimed that "Carl [Sagan] for many years has been taking public credit for the Pioneer plaque which, of course Eric Burgess and I conceived." In November of that year he claimed that "Carl was involved with Eric Burgess and me in the design of [the] message." But according to Posner in 1990 correspondence between him and Carl Sagan, Sagan stated that "Eric Burgess and Richard Hoagland did no more than suggest to me that a message be put aboard Pioneer 10 and 11. Frank Drake and I did the design, and I was responsible for getting it through the White House and NASA approval process."

As for the hypothesis that there are oceans beneath the surface of Europa, none other than Arthur C. Clarke states in his 2010: Odyssey Two that the idea "was first proposed by Richard C. Hoagland in the magazine Star & Sky ("The Europa Enigma," January, 1980)." However, Clarke himself seems to have been mistaken. John S. Lewis first proposed the idea in 1971 and several other scientists published articles in agreement during the 1970s. Posner found that Ralph Greenberg, a professor of mathematics at the University of Washington in Seattle has been trying for years to convince Hoagland to set the record straight-without success.

Do not mistake this as an ad hominem attack - I was initially quite impressed with his credentials listed above, and wanted to find out more.

#460 Re: Human missions » Mission Risk Involving Mars Direct - Mission Risk » 2002-06-23 12:31:18

I'm not sure that the side effects can be that widespread - after all, it is used by millions of women across the world, having been approved by the FDA and other authorities. I do concede that some people will experience some nasty side effects though. You have to remember that astronauts going to Mars will already have to accept a not insignificant amount of risk by mere exposure to cosmic rays; any medical risk posed by birth control pills will be tiny in comparison.

But yeah, men should use condoms. Plus, there's been some news about a very effective male pill which is safe - it's already in extensive human testing.

#461 Re: Civilization and Culture » Martian Security - Should guns be allowed? » 2002-06-23 11:28:17

As far as I know, it is standard practice for UK policemen to patrol without lethal weapons - so they are allowed things like nightsticks and stun guns, but not guns (see this BBC article for more information). Most UK police don't want to carry guns on standard patrols.

Of course, they can carry guns in special circumstances and there are special squads that are trained in the usage of lethal weapons, so it's not as if we're all helpless when armed criminals turn up.

#462 Re: Civilization and Culture » Martian Security - Should guns be allowed? » 2002-06-23 04:08:40

Aetius: I think that's an overly simplistic argument. I'm personally an advocate of gun control, as we have here in the UK and Europe, but I do understand that it's a controversial and unclear issue. For example, in countries with gun control there is significantly less violent crime and gun-related crime, despite the spiel about 'only criminals will have guns'. But you can read statistics in different ways.

I'm not against the formation of a Martian security force; a police, basically. We forget that Mars will be a completely different world to what we know now - in the early days it will be much more difficult to construct guns considering that the equipment will not be available and there will be more important things to build. Plus, there's the possibility for ubiquitous and transparent surveillance of all colonies - what that'll do to violent and gun-related crime, I don't know.

I'm of the optimistic opinion that we won't see too much crime or war on Mars. The worst types of war occur when ideology is at stake (you never see any wars between first world countries any more), and frankly, I don't believe that countries or organizations that promote this kind of ultra-xenophobic ideology will have the money or inclination to send a colony to Mars - at least, not until long after more democratic countries set up colonies.

Plundering colonies for food or resources: I very much doubt it will come to that. I think that colonies will help each other in this respect, and also receive aid from Earth. Colonies will have months or probably years of emergency supplies of food, and they'll know well in advance whether they're going to have a problem. And if they have the capability to go and plunder another colony (lots of rovers, lots of people, weapons, etc) I wonder why they don't have the capability to grow their own food. After all, on Mars colonies will have to be self-sufficient for all the basics.

#463 Re: Not So Free Chat » "Certificate of Deserved Entitlement" - An item received via mail from MS » 2002-06-20 16:09:45

I have yet to receive this mailing (I'll probably get it when I return home from uni) but it sounds like a cheap stunt to me, something which I thought would be below the Mars Society. We all know that these so-called certificates of ownership of land amount to essentially nothing given that they don't have any kind of authority behind them - now, if the USA backed them I'd look twice, but not for anyone else. I would rather they have used the certificate paper for telling people about interesting Mars news or facts instead.

#464 Re: Civilization and Culture » Martian Security - Should guns be allowed? » 2002-06-20 16:05:58

Thread moved to Civ-Culture forum - more appropriate given its content.

#465 Re: Not So Free Chat » World Cup Fun » 2002-06-20 12:09:12

Well, American Football is more like rugby, if you ask me. And I believe that it's called 'soccer' because it's a shortened version of 'Association' (as in Association Football rules). No, I don't think it's a good reason either  smile

#466 Re: Not So Free Chat » World Cup Fun » 2002-06-20 07:04:59

While browsing for information about the world cup, I found a whole shedload of articles making fun about two things: the USA's famous indifference about football (or soccer, as you colonials like to call it  big_smile ) and their idiosyncratic way of describing sports matches and player stats:

A US website headline: "GOAL Mexico 0 - 2 USA. Two soccer points to no score! Landon Donovan top-bodies the sphere into the score bag, and Mexico have a double-negative stat!"

A BBC News article writing a football match report in US sportswriter style: "...The soccer World Cup, a regional show based on Major League Soccer, concludes June 30 at the Grand Series finale in Japorea."

England roster rundown, US style: "Dave Seaman - Goaltender with a .675 save average in last four, the Arsenal Gooners veteran dresses ahead of other netminders James and Martyn and looks for a fourth consecutive shutout. Stats breakdown of just two handling errors with no turnover. In the frame to make all-star team of the World Cup series."

Okay, okay, it's over the top, I know, but we're just getting back at you Yanks for making fun of football all the time!  smile

#467 Re: Intelligent Alien Life » The Drake Equation - useful? » 2002-06-19 14:45:47

The Drake Equation is wide open, but it doesn't suppose to bring an answer towards the number of intelligent civilizations in the galaxy - what it does do is to provide a framework for those seeking to answer that question, and identify the problems involved. I wrote an article about it at another site. This means that researchers at places like the SETI Institute can refer to particular terms of the equation in papers, and that people discussing new findings in the number of (eg.) habitable planets in the galaxy can talk about the greater scheme of things, again using the Drake Equation.

I just read Bill's post, and have realised that I'm repeating a lot of what he said. So: I agree with Bill!  smile

#468 Re: Not So Free Chat » Global warming? - New Ice Age? » 2002-06-19 11:16:00

Comments on Skeptical Environmentalist: I don't have the book with me right now, I lent it to a friend - but I'll have it back in a few days so I'll be able to comment in greater detail. I think a lot of the criticisms of Lomborg's work stem from the fact that it is so unbelievable that the environment is getting better! Look at it this way, we've been told continuously that the world is going to end due to global cooling/warming, and that oil supplies will run out in twenty years (just like the time it'll take fusion to get started, eh?  smile  ). So when someone comes along and says, "Well, it isn't that bad after all, in fact, in some cases things are good!" it seems laughable.

But the book is not one that rests on 'assumptions' or similar woolly thinking. As I have said in other threads, it uses unimpeachable data from the world's best climate and environmentalist experts. It uses the same data that all the environmentalists use - but it points out some of the serious errors in their analysis. Notably, many environmentalists are fond of extrapolating trends from insufficient data - e.g. if there is an increase in grain prices for the last five years, they are oft to say, 'Food prices are rising! We're all going to starve! The sky is falling!' even though:

1) The long term 50 and 100 year trends show a constant downward fall, and
2) The next five years of grain price data show another sharp fall (this is a true example, BTW).

Now, this thing about risk/reward ratios is very interesting. There's been an interesting study (I'll find out the reference soon) carried out on the cost required by many different methods to save one 'life year'. It turns out that environmental measures such as reducing cancer-causing pesticides or putting SO2 filters on smokestacks can cost way over $1000/life year.

$1000 for a year? Sounds like a bargain to me. But hold on a second, if there was a federal law to install fire detectors in every house and apartment in America, the cost per life year saved would be below $1! So you really have to look at this stuff in perspective - yes, we can save a lot of lives by cleaning up the environment. But we can save even more by taking simple everyday precautions.

One last thing about the psychology of risks: humans tend to exaggerate small risks and underestimate large ones...

Finally (!): The environment is not in as good a state as it could be. I don't think that things are perfect, and neither does Lomborg. The point being made here is that the environment is not as bad as its being made out to be.

Bill: I look at that Calvin link you supplied, about the cycle of ice ages and Milankovich cycles. Interesting stuff - I can't really comment though, I don't know much about the subject and the Skeptical Environmentalist doesn't cover it. AFAIK, exactly where we are in terms of an incoming ice age is not precisely agreed upon and it would probably take a few hundred years at least to get really nasty, but we'll just have to wait and see - I could be wrong!  wink

#469 Re: Not So Free Chat » Global warming? - New Ice Age? » 2002-06-19 11:00:02

Actually, the amusing thing about pollution worldwide is that China  has cleaned up its air pollution quite significantly over the last few years - see this recent study for more information (PDF). CO2, SO2, methane and other pollutants are all reduced from five years ago across teh board, even though China's economy has been increasing.

You have to remember that America is the world's largest polluter - and I'm not criticising, because they make a hell of a lot of stuff, but even so, it's not fair to criticise other countries that are undergoing modernisation.

#470 Re: Planetary transportation » Dirigibles on Mars - A practical means of transport? » 2002-06-16 09:07:05

There's a story at the Mars Society homepage about the German chapter's efforts to produce a balloon probe for Mars:

The Mars Society Germany, supported by numerous companies, universities and the German Space Agency DLR, is currently leading an effort to design, build and fly Germany's first interplanetary mission; a super-pressure balloon born aerial reconnaissance survey of the planet Mars. The mission, known as Archimedes, will fill the current gap between orbital and surface missions, and combine long-range mobility of planetary dimensions with close up surface measurements and imaging.

Besides being a technology demonstrator, the proposed craft will perform unique scientific experiments. Being a super pressure balloon it will have the ability to make close up images of the surface from an oblique perspective, probe the weak residual magnetic field from its position beneath the ionosphere, and use an atmospheric science package to provide for in situ measurements of local pressure, temperature and humidity. The associated instruments are a high resolution planetary camera provided by DLR Berlin, a magnetometer provided by TU Braunschweig and a meteorology package provided by the Finnish Meteorological Institute. These sensors have a combined weight of roughly 600 g without electronics, and are suspended beneath a 15 m diameter balloon in a small gondola of 4.3 kg.

The vehicle will enter the Martian atmosphere and decelerate. Subsequently, a drogue chute will be deployed at around Mach 2 that will bring the vehicle through the sound barrier and decelerates enough for the deployment of a larger, the main parachute. The system will drop its nose cap forward in flight, suspended by a bridle forming an instrument that senses ground contact. Once ground contact is acquired, a set of solid rocket motors will decelerate the flight system even further (to around 1-3 m/s) so that a semi hard impact may be achieved.

When the vehicle itself hits the ground, the parachute suspension rope is cut, allowing the parachute to be jettisoned by the remaining fuel in the SRM. This prevents the parachutes from covering the vehicle. Once this has been accomplished, the vehicle will open up by folding out three panels, with the inflation system, the gondola and balloon envelope left in the middle. The gondola is thus exposed to sunlight and can recharge its batteries. Ground controllers will now be able to monitor the vehicle's health and wait, if necessary, for conditions that allow for balloon envelope inflation.

If the command is sent, a smaller pilot balloon will be inflated that pulls up the main envelope, which should be slightly larger. Once this is inflated as well, it will climb to unfold the gondola suspension bridle. Now the gondola is released and the balloon may climb to its service altitude.

This is the design reference scenario. The major issue here is that it is necessary to find a way to automatically deploying the envelope on the ground without having the material ripped due to ground contact. Another option to be researched is to use, instead of a pressure vessel, some way of chemically bonding the hydrogen in order to have it less volatile during cruise, and thereby eliminate a heavy object from the mission.

Issues are that the process must guarantee for a clean hydrogen gas, must be safe and simple and function in the Martian environment, and be lighter than the equivalent amount of gas with it's high pressure storage system. Along with these questions, various entry vehicle shapes are currently being researched, balloon material options are being studied and transport arrangements with AMSAT on board their P5-A space craft are being negotiated.

The institutions other than the Mars Society Germany so far involved are the AMSAT Germany, Technical University of Stuttgart and the University of the Armed Forces in Munich. The team is led by the two project manager Hannes Griebel and Sven Knuth from Mars Society Germany.

A complete report on the design and progress of the Archimedes Mission will be presented at the Fifth International Mars Society Convention, August 8-11, 2002 University of Colorado, Boulder.

Those wishing to get involved with the Archimedes mission should contact Sven Knuth (Sven_Knuth@online.de).

#471 Re: Not So Free Chat » 2002 Mars Society Convention - What to expect, who's going, etc? » 2002-06-16 04:54:06

At the end of the convention there's always a banquet for attendees, which is usually pretty fun and has a bit of entertainment. Towards the end of the banquet a few short speeches are made by Zubrin et al, and if my two previous experiences are anything to go by, they have an open-mic session where any member can ask questions or make statements about any aspects of the Mars Society.

Other than the final banquet there isn't much else planned, as attendees tend to make their own arrangements.

#472 Re: Meta New Mars » New categories » 2002-06-15 17:24:59

Done - I made the new forum. Threads that are clearly about intelligent alien life are being retroactively moved there whenever I see them (so I can't guarantee that they will all be moved straight away). If people make disruptive posts in the middle of threads about intelligent alien life, then they will be warned and further such posts will be deleted. If they get too annoying, they'll be banned - and no, this is not censorship.

If people want to talk about this sort of thing, they can do it in the appropriate forum. If they start disrupting existing threads, that's unacceptable. If you don't like this arrangement, then New Mars is not for you.

#473 Re: Intelligent Alien Life » The purpose of this forum » 2002-06-15 17:19:05

Let me first say that it is not the policy of New Mars or its parent organization, the Mars Society International, to pursue investigations into intelligent alien life of the Cydonia variety. We do not believe that there is a conspiracy to cover it up, and we believe that discussion of such topics is not useful due to insufficient evidence and a complete lack of usage of the scientific method. The New Mars forums were not set up to promote this kind of discussion, and papers submitted to Mars Society Conventions relating to Cydonia are not welcome.

However, New Mars is not going to suppress or censor this kind of discussion, since people will always want to talk about it. All posts on New Mars referring to the possibility of intelligent alien life having formed artefacts on Earth, Mars, Venus or indeed anywhere in the solar system should go into this forum - if they are not made in this forum, then they will be moved here. Discussions of the Drake equation or detecting intelligent life may or may not be moved here.

The management of this forum and of New Mars is up to the administrator's and the Mars Society International's discretion. If you are not happy with this arrangement, then there's always Usenet and other forums.

#474 Re: Science, Technology, and Astronomy » New Discoveries - Extraplanetary, deep space, etc. » 2002-06-15 17:09:50

Brad, what on Earth does your post have to do with this thread about extrasolar planet detection? If you want to talk about Venus, make your own thread about it. If I see any further disruptive posts that clearly have nothing to do with the thread they are in, I'll just have to delete them.

#475 Re: New Mars Articles » Excellent articles on Greg Benford! » 2002-06-15 16:07:55

As ever, I partially agree with what's being said  smile  I think that utilisation of space-based resources constitutes a solution to the demand for energy and materials at low economic and environmental cost. However, I'm not sure that it's the best solution, as yet. It has its advantages and disadvantages - the advantages are that it (e.g. space-based solar power stations) could have very low environmental impact on Earth. The disadvantages are that it would be very expensive and the entire field is highly immature and would require at least two decades to gear up to substantial levels, if not longer.

Energy solutions such as nuclear power and renewable sources (wind, water) also provide low environmental impact and aren't as expensive, and that's why they're the preferred choice for environmentally friendly energy production. As for materials, I haven't seen any studies on bringing bulk materials back to Earth, and I suspect the reason for that is because it may be too expensive right now.

Now, that's not to say that space based solutions are being ignored. Several governments are known to have plans for solar power stations, most notably Japan who have set a deadline for constructing one - so clearly they recognise the potential there. But there are also other good ways for promoting growth and protecting the environment beyond space based solutions.

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