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#526 Re: Science, Technology, and Astronomy » Earth Atmospherics/Weather » 2005-11-25 10:39:59

Well it is late november and we still see tropical storms. This is Delta. It thankfully is far from hitting any of the caribean islands though there is a potential risk to the atlantic Islands.

Still this is getting a bit beyond a joke is the Hurricane season ever going to end or is it as it appears to be that the season where they can form gets longer and longer so raising the threat.

#527 Re: Not So Free Chat » Political Potlock I » 2005-11-15 18:26:59

I agree that we will have to rely on the Iraq people to supply there own law and order but have we forced the issue too fast. Certainly only last week the UK was talking about removing the UK contingent next year. But we cannot do this if we then leave basically what we came to destroy in charge and actively following Saddam and his Baath parties stock in trade.

We need to be able to leave Iraq and say honestly it is a better place now than when we came. At the moment with the insurgency and rising ethnic factional anger, we leave and we will in all likehood have civil war within the space of a few short years.

We are training people fast but in our drive have we in choosing these people just rejected the Black and too keep the white found we have too few and gone for more and more who are really dark grays. This could certainly explain how this torture camp could have come about. Worse is there more than one or are we going to find a large pit filled with the victims who died.

#528 Re: Terraformation » Projected Marsian Population? » 2005-11-15 18:02:27

Low available energy will limit population. You could build a kilometer high tall building covering all of Mars. But the power would have to come from space.

http://www.space.com/businesstechnology … 00908.html

Nuclear energy can be cheap, clean and efficient. The technology is not really that complicated either - I could easily build a small reactor in my living room if someone provided me with the right kind of uranium. I am sure that Mars, like Earth, has many sources of suitable radioactive isotopes. Fusion energy has a great potential, but if it doesn't work then normal fission is a good and proven alternative. In the long term it may be possible to transport energy between different locations in our solar system in the form of anti-matter. This anti-matter could for instance be produced on Mercury.

We do not know if we can get radioactives on Mars but we can assume that it is likely that they do exist. We also have to find radioactives that we can use, Uranium derivatives have been found on the Moon so hopefully we can find the equivalent of KrEEP on Mars. Nuclear is cheap as long as we have fuel. The problems come when it comes down to getting rid of the now hazardous nuclear waste and this includes the now contaminated reactor. This is a long term problem especially when we have to find a place geologically safe and with terraforming happening safe for the long term changes we make.

#529 Re: Not So Free Chat » Political Potlock I » 2005-11-15 17:53:38

US troops searching for a missing 15 year old Iraqi boy entered a goverment compound. They then forced a locked door and discovered more than 170 Iraqi detainees with most showing Malnourishment and many also with visible evidence of torture having been used against them. There where also a couple of the prisoners who had been paralysed by the damage done to them by torture.

BBC, Iraqi detainees found starving

THis is a major embarassment for the US, It has been described as having happened on there watch. In a recent speech of President Bush "he told the crowd that this new Iraq would be a beacon of democracy and human rights in the middle east"

These detainess where never recorded as being arrested and for such a large "black" organisation to have collected so many and kept them, tortured and likely killed, indicates that the trust the US puts in the new Iraqi security agency is not well placed.

#530 Re: Not So Free Chat » Froggy's » 2005-11-14 18:23:29

What this trouble is doing is simply turning France more and more towards the right of the political spectrum. The far right are certainly enjoying this but no political authority or party has gained anything from this, yet.

#531 Re: Terraformation » Projected Marsian Population? » 2005-11-14 18:16:25

The answer is Solar and later predominantly Gravitational.

Solar cause you need only several grams per acre in order to concentrate light using planar fresnel lenses or zonal plates.

Gravitational cause it is the most abundant and clear form... Remember www.paulbirch.net , see - "orbital rings...III".   He figures there that if we deorbit the Moon gradually using ORS ( orbital rings systems ) to deliver from the lunar orbit to the earths surface 6 000 000 000 tonnes of matter annually ( of which 1 000 000 000 tonnes already processed steel, aluminium, titanium...) we`ll satisfy all our energy needs and metal demand for 10exp10 years...

Why moon? Why not asteroids? All the goods including the food could be produced in space and delivered on planetary surfaces TOGETHER with the necessary energy...

The problem with Solar is that at the moment the efficiency we get from the solar panels we can easily make on Mars is poor, especially with an efficiency quotient of only about 10 to 20% also due to the distance that Mars is from Earth we get a problem that Mars just does not recieve much solar energy. Actually plans to terraform mars always start with how do we increase the sunlight Mars gets. Not to mention Solar does not work in the cold nights and of course is also heavily interfered with by dust storms.

Gravitational really just when is this miracle power source due to appear, we cannot even do fusion yet so dont expect what we can do in 1000 years to be able to help us now.

#532 Re: Terraformation » Projected Marsian Population? » 2005-11-13 18:00:07

Low available energy will limit population. You could build a kilometer high tall building covering all of Mars. But the power would have to come from space.

http://www.space.com/businesstechnology … 00908.html

I agree in that Mars is energy poor and that is the essential thing for all modern industry and techniques the use of cheap and plentiful energy. With your life hanging on the balance of energy being used to keep you alive then yes Mars has a problem. Not enough air pressure to operate Wind power, Nuclear too complicated, Fusion not in existence and needing special fuels, And solar being as Mars is far out not enough to supply the needs.

Going to have to be creative to sort this problem out. I wonder if we can use geothermal.

#533 Re: Space Policy » Space fairing Nations - The ever changing view » 2005-11-13 17:55:56

The latest news is that it was not a fault with the Arianne 5 ECA that caused the recent launch to be scrubbed but that of the actual launch platform/ground station. Still no date or time for a retry.

#534 Re: Space Policy » Space fairing Nations - The ever changing view » 2005-11-13 07:35:11

The planned lauch of the Arianne 5 ECA has been postpones after a fault was found. The French authorities hope to reschedule the launch today.

Arianne lauch delayed

The Arianne 5 ECA is the largest of the Arianne family and has been prone to technical faults. This was to be the largest launch of satelites that Arianne space has ever accomplished. Its maiden flight in 2002 resulted in an off course rocket and a big delay before it was able to launch again in feb 2005.

It is a modified Arianne 5 that will be used to launch the Jules Verne ATV to supply the ISS

#535 Re: Human missions » Fighting over the Moon » 2005-11-12 11:28:51

The Chinese are just doing what the USSR already had done and what the Russians still do they use large ships as floating space command centers. So the USA uses cheaper control centers in what is friendly nations but they are always at the risk of political change causing them to lose this ability.

#536 Re: Human missions » RAS says UK should reverse astronaut ban » 2005-11-11 15:26:37

Add to the fact that theoretically Russia and Japan are still at war and the Russians are still occupying Japanese islands.

Add to that the current Japanese prime minister and his ministers often visit a shrine to war dead which holds memorials to a few of the war criminals of Japan.

Add to the Japanese suspicion of the threat that China is currently becoming.

Add to this the current economic war between China and Japan especially to ensure regulat supply to the oil flowing from a new pipeline from Russian siberia.

So in effect not a hope of there being a unified space organisation between these groups.

#537 Re: Human missions » Fighting over the Moon » 2005-11-09 17:11:40

I suspect that there would be no war as the Idea of claiming a whole region is all well and good, as long as you can actually prove your claim and more importantly able to control it.

My space tank and squad of space marines says so.  tongue

There really needs to be a framework set in advance make sure that whatever comes from the Moon benefits those on the moon first, and they get a say in what goes on. The US settlement plan for the (then) Northwest Territories comes to mind.

I suspect that the Moon will always be considered as integral to the Earth in short a big satellite of the planets.

Still by the time you get to build yourself a shiny space tank and a squad of space marines you will find a hundred years has gone past.  tongue

#538 Re: Not So Free Chat » Which Korea published this? - North or South? » 2005-11-09 17:02:53

The first test satellite of the Galileo system of European GPS satelites has been named. Giove-A will launch on the 28th of this month.

BBC Article Galileo Trailblazer

#539 Re: Human missions » Fighting over the Moon » 2005-11-09 12:41:14

I suspect that there would be no war as the Idea of claiming a whole region is all well and good, as long as you can actually prove your claim and more importantly able to control it.

In short you would need a lot of assets to be able to do so and so claiming a whole region will thankfully not happen for many years. By then I hope a more reasonable means to claim resources and the rights to utilise them is made law.

Helium 3 from the Moon has always been a no goer financially as a reason to go to the Moon. But Helium 3 is a very powerful means to provide power and I hope that technology allows its use sooner rather than later. And it is not the problem with containment that benefits a Helium 3 reactor its the means of getting power from it. Helium 3 reactors draw power directly from the reaction but a Deutrium-Deutrium/Tritium reactor has to have the whole water for heating and the generators and the cooling towers etc. This means a Helium 3 reactor at worst gets at least a 40% efficiency bonus in power utlisation and this can be a lot more.

Most modern plants loose a minimum of 40% of the potential power generated by simple heat waste etc. A helium 3 plant will not have that problem and with the more effective reaction they also gain from that benefit too.

#540 Re: Not So Free Chat » Froggy's » 2005-11-08 14:31:22

I have been following the riots and have obviously been very interested in what caused them.

The reason for the start was the deaths of two ethnic minority youths in a powerstation. Locals claim they where in there to hide from police but the police state they where not even looking for them. This was the trigger.

The route cause was though the facts that even though France has a very strong political consensus that Race and religion should not be a factor in anything in practice the ethnic minorities tend to gather in certain areas, in short ghetto's. These people in these districts are less able to get jobs though they still recieve state welfare which for a country France's is very good. Unemployment is 2 to 3 times higher though in these areas from the general 10% that is nationwide. So what happens is that there is an ethnic minority which has no work and has too much time on there hands concentrated in areas. There is also the general minority wide hatred of the police.

This is what is causing these disturbances and they are communicating across Blogs but this is more a chance to boast of there successes and to goad each other to do more damage.

#541 Re: Martian Politics and Economy » What Type Of Government Should Mars Have?? - Mars Government » 2005-11-08 13:49:55

I suspect that when people get to Mars it will not be one just one set of countries or country that manages to make it. This means there will be more than one culture with the different wants and beliefs of the people there. Who is to say that there will be a single political structure on Mars and when it comes down to it Mars is massive there is a lot of room for a lot of such different political units.

We could have a tyranny in the south and a religous state in the North who can really tell. My own belief is that democracy will flourish with communities linked via Mars internet rather than regular visits to each other. This will actually give incentive to interesting political structures rather than bland across the board methods

#542 Re: Human missions » NASA's Moon Mission » 2005-11-08 13:26:59

I remember that a proposal for a lunar hopper transportation system that would have used a system of prepackaged Aluminium/oxygen premixed rockets that would have been burnt to allow this vehicle to hop across the Moon. It would have fired one then as it was coming down it would have fired another to give it distance.

Would it be possible to make a factory that manufactures such things and then instead of making a rocket that pumps the mixture through the motor we instead create a more conventional solid rocket. Obviously solid rockets cannot be throttled and the mixtures tend to burn less uniformly but if we use a cluster of smaller rockets this problem can in some ways be cancelled. This obviously increases the weight of the system.

#543 Re: Human missions » Fighting over the Moon » 2005-11-07 14:58:43

I know its politics but it is relevant to this thread.

I have to agree with that assesment BWhite. But we must also put it to its logical conclusion. If one of those craters was found its materials will still belong to the whole world assuming the country accepted that provision in the Outer space treaty. But with the $Billions sitting in such a crater I could well see the Outer space treaty simply discarded and as long as that country kept to the other space provisions and treaties there would not be a problem for that country except for the general lack of legal provision for everyone else.

Actually that is my main concern the Outer space treaty does contain a lot of decent general legislation and it provides a sense of protection and guidelines for many of those who plan for space. If this treaty is dropped to allow a country to use mineral mining then many countries will follow suit. Landgrabbing and probable claimjumping are likely to follow as there will be no set authority to protect those interested in space and utilisation of space.

Of course with China being interested in Mineral exploitation then there is at least one political force interested in changing the current Outer space treaty into something more useful.

#544 Re: Human missions » Fighting over the Moon » 2005-11-07 09:31:04

The principle of Hunting for a Fusion fuel on the Moon is not considered a good idea by the likes of us in the west but you have to look at it from the point of view of the country that wishes to do it in this case China. China needs to double its power output every few years to keep its expanding economy and rapid industrialisation on track. It can do it but it has limited capability to do it by the likes of cleaner hydro, Windpower is just too expensive and does not provide enough power. It has not enough Gas and the price of that commodity is increasing, Oil is needed for fuel and materials not for burning for power. This leaves only Coal and Chinas coal which has plenty of is as coal goes very very dirty.

Nuclear is an option but the whole world is looking at that option so prices for uranium is increasing. Another problem that China has is that it is a country that is actually water poor and this has major concerns for the Future. Water purification and pumping needs a lot of energy and this will have to be supplied.

Now there is the possibility of Helium 3 which as power goes is clean and from the energy it can give fantastically powerful. So China has to look at the future and it sees this fuel possibility so she will do the sensible thing and make sure that when the powerplant that uses Helium 3 comes available and oil is runing out it has another power source available.

China's position is no diffrent than that of any other country.  Sure they need more energy, we all do.  But that fact doesn't change the economics of the situation.  I was check prices online, I can buy 8500L of Deutrium for 5,100€ or about $6k.  right now, with the bottle included.  That's about $1 a liter.  Now I can't by Tritium online for obvious reasons, and while I would expect it to be more expensive, not necessarily drasticly so.  Lithium (which is radiated in a reactor to get tritium) is around $50/lb. so Tritium isn't going to cost drasticly more than this, but lets call it an order of magnitude to be generous.  Even at $500 a pound it is cheap.  Now I know my units aren't all uniform, but I think you can get the point.  Conventional fusion fuel is cheap.  And when you consider the amount of energy that fuel can produce it's REALLY cheap, way WAY less then enriched Uranium or Coal.  I don't see how He-3 which is going to cost millions to billions of dollars per gram is going to be able to compete.

But it does come down to operating cost and size of machinery needed to build an operating reactor. If we can get fusion operating using Deutrium rections we will find that the plant will have to be of a large design as it will like a coal plant be the power of water heated by the plant that we get power from. All of this will be at risk and it will be likely irradiated and as such needing replacement often and the material from this plant will be radioactive hazardous waste. Getting rid of this and replacing the plant is expensive and the greatest operational cost of the plant is not fuel but this handling of dangerous material and its long term storage.

Helium 3 will though need a lot smaller plant as it will draw electricity straight from the fusion plant and as such a smaller less radioactive plant is formed. This over time is the major saving though the plant that houses a Helium 3 reactor will still get irradiated from stray Deutrium-Deutrium reactions. The difference is size and that the plant will last a lot longer, need replacement less and when replaced the irradiated plant will take up less space in storage.

And so the long term view as well as that the use of Helium 3 plants will not give a country the ability to make nuclear weapons from the materials irradiated unlike a Deutrium-Tritium plants waste, gives Helium 3 an edge.

#545 Re: Human missions » Fighting over the Moon » 2005-11-06 08:57:51

The principle of Hunting for a Fusion fuel on the Moon is not considered a good idea by the likes of us in the west but you have to look at it from the point of view of the country that wishes to do it in this case China. China needs to double its power output every few years to keep its expanding economy and rapid industrialisation on track. It can do it but it has limited capability to do it by the likes of cleaner hydro, Windpower is just too expensive and does not provide enough power. It has not enough Gas and the price of that commodity is increasing, Oil is needed for fuel and materials not for burning for power. This leaves only Coal and Chinas coal which has plenty of is as coal goes very very dirty.

Nuclear is an option but the whole world is looking at that option so prices for uranium is increasing. Another problem that China has is that it is a country that is actually water poor and this has major concerns for the Future. Water purification and pumping needs a lot of energy and this will have to be supplied.

Now there is the possibility of Helium 3 which as power goes is clean and from the energy it can give fantastically powerful. So China has to look at the future and it sees this fuel possibility so she will do the sensible thing and make sure that when the powerplant that uses Helium 3 comes available and oil is runing out it has another power source available.

#546 Re: Human missions » Fighting over the Moon » 2005-11-05 18:13:35

That is stupid why waste all those tourist dollars taking people to see those old sites.

And frankly the principle of the game is materials and subtle political one up-manship. It also revolves around ensuring your country has the ability to dominate the next 50 years.

#547 Re: Human missions » Fighting over the Moon » 2005-11-05 07:55:15

The best way to state a claim to territory on the Moon and elsewhere is to be there and using that terrain when someone else comes along.

So what if the USA got there first all they left was a flag and footprints and a large mirror. As long as China does not disturb that area then they can do what they like with the rest of the Moon assuming they ignore the outer space treaty enough to actually start mineral exploitation.

The USA by the way did Not claim the Moon it was not allowed to.

#548 Re: Space Policy » Chinese Space Program? - What if they get there first » 2005-11-04 18:43:48

China has a lot of work to do to be able to send and get Taikonauts from the Moon, It  must have A heavy lift option, practiced docking and longer term missions, it must have a designed Moon lander, Designed and tested spacesuits for the Moon. Not to mention it needs to know where to land and how to do it and have a decent knowledge of the Lunar terrain and Maps. Still it is the measure of there space programme that they can consider they can do it in this very tight timeframe and we shall see if they can succeed.

Now though space is a race and for domination of the Moon and Mars there are spots where being first there gives Major advantages. She who controls those areas of permanent light gains great long term power. Aristarchus crater is another as it seems to be home to a lot of released volatiles, not to mention being central crater regolith covered and surrounded by highlands.

Mars is another example what happens when a country gets both Moons and lands and controls Olympus mons with the plan for use as an elevator site?

In short there are strategic points on or around every planet/Moon he who controls them can find it easier to dominate that terrain.

#549 Re: Space Policy » Chinese Space Program? - What if they get there first » 2005-11-04 07:09:22

China plans for first manned mission to the Moon to land about 2017 the intention is Mineral and Helium 3 exploitation. Definitly looking to the long term here with the intentions of actually mining.

Reuters News Agency Article

#550 Re: Science, Technology, and Astronomy » Medical Science Potpourri » 2005-11-03 14:14:33

Well Nano-Tech has exploded two treatments already out there and apparently over 150 in the pipeline.

Spacedaily 150 Nanodrugs on the horizon

Great stuff especially as these are mostly aimed at cancer.

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