You are not logged in.
Another large Glacier has broken away
http://www.livescience.com/environment/ … .html]Live Science article
LOT of loose ice floating around nowadays
GCNRevenger,
It doesn't stop governments as owners of resources and doesn't stop employing or sub-contracting the work to others but ultimately the resources could be controlled by a government for its uses and not for humanity in space uses.
That means if the chinese find resources that could benefit china they won't share with other countries and same goes with all other nations. And I do remember all the treaties , but they are paper and we are talking about the real life concerns of their people and they won't stop protecting the way of life for their citizens because it says we can't unless they back up the paper with actions.
Also when private enterprise goes out into space they will claim out a section for themselves and hold their resources until they can increase by creating alliances or merge with other private concerns or get taken over by government concerns, " brave new world in space ".
In this it does.
Currently it is only the goverment sponsored agencies able to afford with our current launch technology these challenges to enter space. We have some hope in the Alt space community but there is no funding there and as such most plans to enter Orbit or higher using there ideas remain that just ideas.
Currently, though there is tremendous potential to be gained by using space there does not appear to be of anything currently worth the considerable investment in making space cheaper. And it is unlikely that goverment will sponsor the small firms as the larger ones are giving them what they currently want and also are good taxpayers and have very good links into the decision makers.
You believe that if the Chinese goverment is able to enter space in enough capacity and to put the infrastructure up there to enable mineral etc utilisation they would claim the sights and areas they are using as theres. I agree they would and so would anyone else, the outer space and Moon treaties not withstanding. But it is for a legal decision to allow mineral rights I am hoping for rather than a "gunship" type solution where we have a standoff between armed parties in space.
Despite my tendencies to the Right in politics, which I defend as pragmatism and realism, I am actually an environmentalist - though more along the lines of Bjorn Lomborg. I think we need to analyze the problems we face carefully before we jump to conclusions.
I don't like burning fossil fuels, I don't feel comfortable raising atmospheric CO2 levels, I don't want the seas polluted, I think the human population should be 1 billion - not 6 billion.
Temperatures are reported to have risen 0.7 deg.C in the last 100+ years and it looks likely the 30% rise in atmospheric CO2 since the Industrial Revolution has played a part in that.
But what we do have is the hard evidence of Ice cores and in Ocean taps that CO2 remained for the most part stable for the last 10000 years at about 280ppm. There where variances but never more than 1 or 2ppm. This is not the case starting about 150 years ago that CO2 started to increase till it now is at a level of 350ppm. We have seen that lately weather patterns are being affected.
We are the dominant species on this planet and we really are masters of all that we survey. We though are producing the majority of the CO2 that is entering the atmosphere either by burning hydro carbons or by the slash and burning of forests for agriculture.
In Scotland we now have the climate of what was the south coast of england in regards to when spring comes and to the severity (or lack of) of the winters. Worrying for Scotland is that people from England might move up here (Laughs).
Fossil fuels are what has given us the very high standard of living we in the west now enjoy. It has fueled western culture to being the dominant one in the world and has allowed the worlds "carrying capacity" to have the 7 billion that now abide on this planet by its mass production agriculture. But to all of this there is a cost, an acre of grass for cattle does not absorb and convert as much CO2 as an acre of forest. And our dependence on fossil fuels means that we produce a lot of CO2 that has to go somewhere.
So what can be done well for oil we are seeing its price rise and rise as we have really peaked in our production and it is now falling but demand is still there. My concern is that we will still need to have to provide energy and we will have to turn to other power sources as oil prices rise. This could mean coal and there really is no dirtier a fuel.
Do we really want a world that has a lot of its flat areas covered in rising sea water. Where would the people of Bangladesh go? If we keep going with the global warming we do risk one thing more and more global insecurity and it wont bring what we all hope for a peaceful world
Heh sorry to go slightly off topic.
Not as if it hasnt happened before ???
Studying the United states constitution and its history in particular the civil war. Was it not constitutionally right for the southern states to decry that the states where the main backer of law and there rights where the priority in the constitution. And that a Civil militia was what was due to back up a states rule rather than a federal appointed body.
Of course I could be well out of base but then again im not from the USA and would like an answer to a question that puzzles me.
I hope Ian that you and yours have the best and that this symptom will be able to be cured or at least treated by medicine.
And since the majority of type 1 diabetes is very treatable and since I have a friend who had it I hope your bairn goes with the majority.
My friend never found it an impedement on his life or in enjoying his childhood in case you need an example of this.
Wish you the best, Grypd
You do know that this replies are very depressing to me
Heres hoping someone can actually use the survey for what it is a mineral survey so allowing a bit more like a full access to space and its resources
At last, it has always astounded me that such a potential resource like the Moon has never been checked for materials which we would need to further advance mankind.
But will NASA share :laugh:
Thankyou GCN.
But for us to require that amount of investment and cost we need to have a real reason. At the moment the USA's plan to return to the Moon and go further hardly calls for the creation or need for such development of cheaper to space launch hardware. And as much as we dont want them we will still need a heavy lifter to get cargo to space.
I'm deferring to "the world's existence doesn't revolve around us." It can still be bad and natural, we can be contributing but not be the cause, for all we know it might even be good for more people than bad. Mine is a position that acknowledges the complexity and inherent instability of the world around us while acknowledging that we are part of that world and affect it in combination with many other factors.
But I have to ask the question what about all the hydrocarbons we are using. We use over 574 million barrels of oil each year, mostly for fuel. In the US the production and use of coal is over 400 billion tonnes a year most of this is pure carbon.
This is a lot of carbon going into the atmosphere and I have to ask where does it go?
Which I haven't arqued against. if you want to cut pollution for the sake of cutting pollution I'm with you, but not if it's shrouded in this religion of catastrophic human-caused global warming.
We have seen that we are able to have a great effect on this world. Do you remember mount Pinatubo Volcanic eruption 1991. It produced about 22 million tonnes of ash and sulfur Dioxide (SO2) it changed the weather for about a year. It cooled the atmosphere by about a 0.5 degree centigrade. This is a definite example of a real change in what occured. Sulfur Dioxide obscures the sun but Carbon dioxide retains heat so does this mean that we who pump about 5 times as much into the air are effecting the world as much?
If it is not us what is it then that is causing the world to heat up as much and the increased amounts of CO2 found in the atmosphere.
Spaceplanes always give me thoughts of the Chicken and Egg scenario. They will never carry a large amount of cargo but are the perfect way to take people up reasonably cheaply. But they wont be developed as there is no reason to have large amounts of people go to space. And we wont develop space to the point where large amounts of people are needed when its so expensive to send them there.
One question a metalic heatshield what sort would be best and what kind of endurance can it give us. ie how long will it last?
So we can be reasonably certain that the atmospehric composition is different now than in the recent (geologically speaking) past, but this isn't what I'm arguing. It has not been established that the change is the direct and sole result of human activity or that it has a causal relationship to recorded climate change, which incidentally brings us closer to the Earth's baseline rather than an unprecedented warming.
It's all a question of the timeframe you sample. It was colder 200 years ago. Most evidence indicates it was warmer 500 years ago, the so-called "Medeival warm period". Go back 10,000 and we're significantly warmer, go back 70 million and we've cooled dramatically. Climate cycles regardless of what we do and we're at the tail end of a cool period. If every human being died tonight the climate would still go about its shifts, sometimes dramatic. I want to know how much and in what manner we affect it but to assert that we are the cause of it is fantasy.
I know it's tempting to think that the Earth is stable and that natural systems are easily quantified in simple, labeled columns but it just isn't the case. There is far more at work here than western nations burning coal and driving.
But like everything we have to look at the where this CO2 and methane that is present in the atmosphere come from. What puts it there and what would account for its increasing. Unfortunatly only by looking at the Emissions of fossil fuel burning and deforestation can give the amount that is now present. We know that the gas hydrates on the ocean and locked in the permafrost are still there.
It was colder 200 years ago but then the general Industrial revolution occured and since that time we have recorded an increasing amount of industrial products in the atmosphere and ocean floor, Principally CO2. The Earth is in what is called an interglacial period and should by evidence from geological be in a period of cooling. But its not, its heating.
There is no such thing as an Earth base line but general trends and peak conditions like Ice ages etc. But what is certain is that it is a general trend between the extremes and not what is dramatic increase like is occuring now. The only change is Human influence and that we are very influential to the planet.
And it is not just the western nations which shoulder the blame. Certainly the rest of the world is being destructive to there natural balances as we are, in fact in the production of methane they are worse and in the destruction of forest and so called carbon sinks the worst. But it is the western world that burns the hydrocarbons.
The proof of human responsibility for global warming is about as rigorous as the proof that Martian meteorites really are from Mars. Characteristic isotope ratios are considered adequate proof of origin in both cases.
No it isn't.
I'm just disagreeing with everything you say today, aren't I?
About time I joined in
There is a certain increase in Carbon Dioxide in the atmosphere and this we have from sampling of air and of Ice core samples so we know what the atmosphere has been like with a very high degree of certainty for at least the last 160,000 years we can tell when volcanoes erupted and when there where years of great forest fires. Add this to sea floor core samplings has given us a detailed picture of how the atmosphere has changed.
We have a theory that greenhouse gas emissions from human industrial activity are the direct cause of the mild tempature increase recorded over the last century or so, which happens to roughly correspond with previously recorded variations going back well before the burnign of fossil fuels
We have detected a massive increase in the tempature of the whole planet and it is not like any tempature changes we have ever reported except for some really nasty events in the past where it appears all the gas hydrates stored in the Tundras and ocean floors let themselves into the atmosphere. The increase in tempature is directly linkable to the increase in the so called greenhouse gases found in the atmosphere.
There certainly is a link to the CO2 emmissions by industry and the burning of fossil fuels but there also is the likelhood that the reduction of the rain forests will have reduced the worlds capacity to absorb so called standard natural emmissions of CO2.
Maybe we are causing it
Oh yes we are
I'm all for investigating it to find out what exactly is happening and why, but we aren't there yet.
There is the trouble we may have to do something about it now or it may be too late. The planet has nothing like what has happened occur to it before and we could be actually about to run over the cliff. But how do we find out we have our ice and ocean cores. We have the rising sea levels and we have the general trend to wilder and more severe weather. But how do we put it down in paper its a trend with people having to make a good estimate of what will happen.
On this I can agree, there's no sense taking rash and economically destructive action based on an unsabstantiated whim.
Its a case of risk management and if we do hit a bad trigger point then it may be economical suicide. Most surveys of water level rises produced by NASA and other well respected organisations show that our major cities become more and more at risk of flooding. Imagine floods puting New York under two to three feet of water and then think of the impact that would have on the economy. But saying that we are doing something about it but far too slow.
The British goverment now have plans to develop a Tsunami detecting service for the western hemisphere.
It is something everyone has to realise is that Tsunamis can occur anywhere that there is a large area of water. The American continent Eastcoast and Europe have no real Tsunami detection service either. The Tsunami in the Indian Ocean was a wakeup call, a tragic one and we do need to do something better. As an example the Japanese have the best Tsunami detection service in the World they detected the one in the Indian Ocean but due to not haveing anyone to tell all they could was watch. The Pacific has a good one and soon will the Indian ocean. But what about the Atlantic. And this question was asked of a geologist in Aberdeen university could it happen. His answer "Oh yes, actually geologically speaking they are very common"
And it can be quickly repeatable and the heatshield on the orbiter section does not need incredibly delicate and long inspections.
http://www.floridatoday.com/!NEWSROOM/s … XYGEN.htm] Generator to fly sooner, NASA wants backup oxygen maker on station before crew expansion
NASA has moved up the launch of a new oxygen generator, which will fly to the International Space Station as soon as 2007.
Hamilton Sundstrand is developing the generator and plans to deliver it to NASA's Marshall Space Flight Center next month, so it can be integrated with its power supply.
It will be installed in the station's U.S. laboratory. Previously, it was to be housed in the yet-to-fly European-built Node 3.
Why so long to send it up after getting the unit at the end of 2005? Does it really take that long to add a power supply unit? Why does it not come with one?
One reason could be that the oxygen generator wasn't designed to use the US Lab's power supply as it was intended to fly on the European Node-3 module. It probobly needs some adaptors and modifocations.
There is another example of the short sighted thinking that catergorises the building of the ISS. This oxygen generator was at first supposed to have been launched by the Ariane 5 and not the shuttle. It also was supposed to have its own power supply but all this was vetoed by NASA. Now the Node 3 remains sitting in a hanger as it is now impossible for it to be launched by the Ariane.
This beggars the question if this is international cooperation what happened then.
Well it seems that France has decided it can no longer afford the 35 hour week. There Unions are angry but the Buisness community of France state if it does not happen it will cost france dear.
Interesting.
And in Britain we now have a law of self defence for Homeowners who find there house being broken into. Still means you just cant shoot him dead and keep pumping bullets in. But reasonable force if used and kills the Housebreaker will be allowed.
And the European space arm of Eads has made a profit last year. But forsees that there will be trouble ahead for all space contractors.
Sorry to see no link to the thread but/
http://www.spacedaily.com/2005/05020116 … Spacedaily Article
And its not as if this has been known for years. The trouble is For the USA is it cannot afford the Kyoto agreement especially facing cheaper competition from the likes of the Chinese etc.
Not to mention it is political suicide for an American president to tax the Fuel that fills its countries tanks. There is even rumbles when the price goes up.
Not to mention we will likely find that the Martian fines may be charged and as such "sticky"
Still it is something we have discussed in other threads and some interesting alternative means to move Martian or Lunar soil have appeared. Especially as groundforce is very reliant on the gravity of the planet and as the lower the weight the less effective a standard weight digger will operate.
This is ridiculous.
The ISS is having to use its thrusters as the basic system to keep it spinning the right way has Overloaded
The ISS is still suffering from the occasional recurrent unexplained noises though the Mission controllers now think its the result of stress being put on the whole frame. There where those nasty dent pictures.
The ISS keeps having its air supplies get low as the main system to manufacture and purify the air keeps breaking down.
The ISS has real difficulties for feading the much reduced crew aboard as its supplies are reliant on the Russians who never planned to have to do the whole deal..But hopefully the ATVs will be up and running soon.
The ISS is hardly finished and is going to take ages if ever to be done as long as we get the shuttle working as no other option is available to send the modules into space and its very unlikely to be able to do any real science before it simply wears out from age
The ISS is in the wrong orbit for development of space and it really has no future potential in that regard. If we need to go to the Moon we will need to create Another station to be able to develop those potentials.
The ISS is causing real problems in international relations with the Russians actually calling the shots but with everyone blameing NASA for why they cannot get the Billions they have spent to create modules to go up there. Especially as NASA in the past had blocked alternative launchers sending up there own modules or creating modules with seperate power supplies.
The ISS has become what it was not to be a floating failing white elephant. A lot of good work went into the creation and design of the various modules to be utterly wasted. I find it very frustrating.
Significant emigration is the only source of sufficient demand to spur the development of truly low cost Earth to LEO launchers.
IMHO, as always. . .
Then you have to have a reason for going there and it has to be a commercial reason or one of planetary necessity. At the moment we have neither and have to rely on the spinoffs of going elsewhere in the solar system to reduce launch costs. So if we have a reason to go commercially to the Moon and the Asteroids then we should have a reason to invest in cheaper launchers. So then we can consider emigration.
It has been said that we will send a generation of artificial wombs so that an instant population could be created on Mars. Sorry to say if that where to be the case it will be done by another country than the USA. Taking stem cells and developing a fetus in space is not capable for them.
It recently has found that the stem cells it currently has are coated with a sugar enzyme. This means that they are unworkable and it is not known how they got there nor under legislation can they garner more or research how they where so contaminated. And we are far from clone producing a generation of Alphas, Betas and Gammas.
As for Kliper it needs a development of its current launcher to fly. And it is this launcher that can be flown from Kourou. And so Russia wants to work with ESA is that a bad thing it keeps them focused on this side rather than China and for ESA it gives them access to a lot of developed space research and generations of advanced Engines and launchers.
Falcon V may be less expensive than Delta IV but can it undercut the Soyuz 2 lifted Kliper.
The race of the vapor-ware? :laugh:
I have more belief in Falcon flying than Klipper. Cheaper is just a matter of time as the big-space guys watch their market get undercut. They'll be forced to redesign and work at the new cost levels.
I actually have more faith in Russia and its Kliper than the Falcon V. The Russians apear to be building a modernised version of the Soyuz and have done the basic research. It will cost 10 billion rubles but with the improvements in the situation in Russia and with there financial side becoming more stable they seem to have the money for it.(not to mention the will for the prestige)
I think its the actual amount that reaches the sail that is important and Im pretty sure that the Sun will not deliver the required 60mw. It also seems to be set for a specific frequency so allowing it to be able to cause the paint to melt and release its stored gases.
http://www.newscientist.com/channel/spa … 46.500]New Scientist article
Seems that scientists have found that a sail made of carbon with a paint coating that would be vapourised by heating would accelerate to 60km/s per second. It would require delivery of 60MW of microwaves from another source but this should be feasible to do.
Interesting but with some questions
1) The return leg would still be limited to the engine on the spacecraft if it was returning.
2) Where would a 60MW microwave be based.
3) Finally the sail would find that the paint is a one use option.
These are fundamental questions but for a means to get to places faster it may be worth it.
I suspect that we will never truly know the numbers of people that have died in Gulf war 3 and the occupation of Iraq afterwards. And I can see it will cause the historians to be arqueing this in the decades to come. Not to mention wether it was really a worthwhile war in the first place.
But it is said we cant arque over spilt milk. We are there and it means we have to devote all our efforts to fixing the problems and ensuring when we leave we leave a country that will not turn out to be a worse enemy than Saddams Iraq was.