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Maybe it's a mistake to try to base a Mars colony's food production on plants and greenhouses, at least to start.
In essence you need a means to convert energy to edible food. So it might make more sense to chemically produce simple sugars and starchs. Feed those to fish, chickens, rabbits - and of course humans.
I won't try to guess whether this is more energy efficient - but it's likely to be more reliable and easy to repair than any plant-based conversion system.
As far as recycling - I'd think recycling the water might make sense, if you're not located close to an abundant source - relatively easy to accomplish.
Why? 2 years is an awful lot of groceries. When is the last time you bought two years worth of food? You know what they say, "better to teach a man to fish than to give him a fish." Does it make any more sense to store 2 years worth of food than to store 2 years worth of oxygen and water? If the if the Earth return vehicle fails, then the crew stands a chance to survive until the next rescue mission if they grow their own food, but if they eat stored food they're dead!
how can we allow the Armed Forces of the furemost Superpower in the World to be defeated by a band of Criminals?
It is the attempt to be a superpower that creates recruits for terrorism. The more you attempt to assert control, the more recruits will join their cause. Some recruits will earn money, others will be soldiers, both make them stronger.
So you say we should disarm and cease to be a superpower? Unfortunately, even though they say, the meek inherit the Earth, the truth is they generally get disinherited. Just look at what happened to Israel in the Roman Empire if you don't believe me, they weren't strong enough to resist the Romans so they got disinherited.
Tom, You seem obsessed with "winning". The goal is to protect the lives of citizens within the borders of your own country, not to "win". Fighting a war against a bunch of criminals is like using a sword to fight a hydra. As soon as you cut off one head, two more grow. The sword cannot defeat a hydra, every attack merely makes it stronger. Or I can say it's like using a gun to fight rain. New Orleans found how much damage can be done by a hurricane. Once the levees broke the city flooded, do you want to fight floodwater with a tank? You can't, the tank shells will simply splash and sink through the water; it will not cause flood water to leave the city. This is what you're doing by sending military to defeat a criminal organization.
So your calling terrorism and crime a force of nature? So do you suggest that we try to placate it instead by making offerings of tribute? Sorry I don't want my country to be part of somebody else's empire ruled by terrorism. We try to win the war in order to deter the next enemy and in that way we secure public safety. As for crime in general, there are cases where the problem requires a military solution instead of law enforcement. The Italian Mafia is one such example: If an Italian prosecutor pursues mob figures too vigourously, then he ends up assassinated, the arm of the Mafia reaches up to the highest corridor of power. I'd rather not have terrorism rule my country the way the Mafia rules Italy. Living with a criminal organization running a country is no better than rule by a military dictatorship. So you'd rather the US Government pay protection money to terrorist organizations like Saudi Arabia does instead of fighting it? I'd rather my country go down fighting terrorism in an ever expanding conflict than have it submit to the forces of terrorism and pay tribute. You see the countries and peoples that support terrorism can be made to pay a terrible price for it if the US fights instead of submits. If the War is not winnable then at least we can make sure both sides lose and maybe that prospect alone will deter the enemy from attacking, same as the principle of mutually assure destruction. The key thing is even if we can't win, we'll make sure the other side loses the same as us. Besides 3000 casualities over several years is not alot, despite how much the Media wants to hype it, and we're taking a toll in enemy casualities that is many times that of our own despite how much the Media wants to suppress it. The best way to win a war on terrorism is to outlast the terrorists and get a media that is on our side in fighting them, instead of acting like we could end it at any time simply by withdrawing. Can you guarantee that there will be no further terrorist attacks if we withdraw from Iraq?
The military is designed to fight a military. A geographic country traditionally has a limited piece of land and resources only from that land. Personnel are limited, some are farmers, some are miners, some are factory workers, some are teachers or bankers or researchers. Others are soldiers. The pool of personnel available is limited, recruiting soldiers takes away from those building military equipment or from sustaining the economy that supports the military. It’s a matter of managing limited resources. You can try to manage your country's resources better, making your military stronger. However, a terrorist organization is completely different. They don't own any territory. They have commercial, profit making operations in other countries. Many of the countries in which they operate are your allies,
Not really. Either they are prosecuted and arrested or that country is not an ally.
and in fact some of their profit making operations are within your own country.
Then the law will prosecute them if they are found to be supporting terrorists, we do not allow them simply to continue to operate if known. If unknown then they are rebels, and we fight them like we did the previous rebellion in this country.
They purchase equipment from the same arms manufacturers who supply your own military;
The that arms dealer will cease to exist as a legitimate arms dealer. We fight all enemies foreign and domestic, that is part of the Presidential Oath of office in fact. I guess you kind of President would take that Oath with a wink and a nod and vow only to fight enemies that are in uniform and stand up right in front of our guns.
they don't have military factories of their own. That means the pool of resources your country draws from is the same resources the terrorist organization draws from.
That is where the FBI and CIA get involved. Terrorism is not in of itself profitable, resources must be siphoned off from legitimate sources and people's incomes to fund terrorism, we must find those people and arrest them. If its alot of people then we expel most of them and arrest the ring leaders. I am always nervious about immigrants who might be sympathetic to terrorist goals.
When you commit atrocities, it creates incentive for citizens throughout the world to join their campaign against you.
Forgotten about mutually assured destruction already have you? Why are you against missile defense then, if you seemingly have doubts about the ability of our offensive nuclear forces to deter? Let if be know to the World that if the World goes against us, then that is how the World will end, it would be no different than if the Soviets attacked us during the Cold War except that our missiles would be spread out across more of the World. Now if the World expects us to simply accept terrorism and if we don't, they'll attack us, then they'll find our that they too and their countries will also be destroyed.
That means the pool of personnel from which they recruit solders is the same pool of personnel which is your allies, and in fact includes your own country's citizens. You can't beat them down, you can't manage an economy better to build greater strength, because they draw resources and personnel from your own. You are fighting a hydra with a sword.
Yeah, I can just picture the terrorist recruiting in a shopping mall right next to the Army recruiters. Here you have the clean shaven sergent recruiting soldiers and the scruffy looking terrorist recruiting terrorists, and some young kind trying to make a thoughtful decision about whether to join the Army or become a terrorist.
Alternatively, if you treat terrorism as a crime the emphasis is to behave in an ethical manner. This isn't just "doing the right thing", it's a very practical strategy for success. Dropping a cruise missile on an al-Qaeda training camp in a country not your own, and without the approval of that country's government simply justifies terrorist tactics and creates martyrs who can be used as propaganda to recruit more soldiers from all countries through the world.
We didn't obtain Germany's approval to knock out its War plants and training camps did we? What would have happened if we went up to Adolf Hitler and asked his permission to bomb his country, because we had information that certain people in his country were training to fight a war against us, we're manufacturing weapons to kill our soldiers etc.? Would Adolf Hitler give his permission to make a strike against his country, which technically is not under our jurisdiction?
If you send in will armed, well trained police to arrest them, it demonstrates you will not be dragged down to their level and that their activities are criminal acts and their members will be treated as criminals. This creates a disincentive for new members to join their organization. Ethical behaviour starves them of new recruits, both for soldiers and commercial profit making operatives.
Get it? Stop chopping the heads off a hydra, instead starve it.
Was the Confederate Army of the Confederate States of America a Criminal Organization? The United States did not recognize the Confederate States as a sovereign nation, therefore any activities of the Confederate Government and Army would fall under our jurisdiction. What would Lee and his Army have done if he was confronted by a bunch of cops who wanted to arrest him instead of the Federal Army? Was it unlawful for Federal Troops to fight the Confederacy since the Federal Government did not recognize the Confederacy? For me, instead of tackling these legal questions, I would have wanted to just win the War.
I'm still trying to figure out how some Middle-Eastern-born Arabic (*) U.S. visa [expired] holder, who only wanted to learn how to fly a plane horizontally (didn't want to learn takeoff, landing or anything else), DIDN'T raise any red flags in the minds of the morons giving flying lessons...
...until after 9/11.
Terrorists can come into Canada and down into the U.S. But of course they can -- and do -- also come through our front door. All the 9/11 hijackers were welcomed into the U.S. by us!
I can't condone "arming" the northern border for a couple of reasons (one being our Canadian friends don't deserve the insult). Tighter controls at the major points of entry should be enough.
(*) Most of whom hate Israel and us for supporting Israel
If you build a "wall" it must be continous or the people who want to get through and harm us are only going to go around that "wall". I can see a common "wall" surrounding both the US and Canada and if that happens, then I see no reason to guard the border between the US and Canada. If the US is vigilant and Canada is lax and the border between the US and Canada is not guarded, then the terrorists are going to have some incentive to enter through Canada. If this hasn't happend yet doesn't mean that we aren't vulnerable. this sort of security is sort of like the security of a homeowner who doesn't lock his doors and windows, excusing himself by saying, "Well we've never been robbed, so leaving the doors unlocked would seem to be a friendly gesture. Many people install security systems and locks only after they've been burgalarized.
Quite a book here that you've written, and almost impossible to respond to the whole thing without spending a whole day on it. So therefore I have to respond to some choice parts even though I've taken the time to read the whole thing:
Tom, I've harped on about this since the Clinton administration. You're new here, you haven't read all my posts. Let me summarize. The correct, sane way to deal with criminals is treat them as criminals. Treat a crime as a crime. Stop attempting this "war on terrorism"; terrorism cannot be stopped by war. It can be stopped by treating it as a crime.
When criminals take over a whole country as in Afghanistan, they cease to be criminals and become an Enemy. But if I take your argument and it is only criminals that we are fighting, then how can we allow the Armed Forces of the furemost Superpower in the World to be defeated by a band of Criminals? I say allow because it looks like the US Congress is going to allow this band of criminals to defeat our armed forces by withoulding funds from them for this operation in fighting them, this means our soldiers are going to run out of munitions, food, and that they are not going to get paid as they fight this band of criminals, so therefore this band of criminals wins and the US Armed Forces look weak and to satisfy the Democrats political cravings to defeat George W. Bush.
I once saw on TV news a U.S. congressman say they tried to treat it as a crime, but that didn't work so they're going to war. That statement is wrong, they never did treat it as a crime, they always treated it as war. The war has never worked and never will work. Terrorists don't have a finite territory with limited resources, rather they're non-geographic and can recruit personnel and resources from anywhere in the world. Consequently all your resources are their resources. A war of attrition will never work in that environment.
Obviously the terrorists operating in other people's countries are breaking the law and are therefore criminals, but the nations sponsoring them are the Enemy. There is a bit of fuzzy logic here, if we mechanically prosecute these terrorists, no matter the scale of their operations then at some point the scale can overwhelm the courts and it becomes a national security matter instead. Due process is overly long and not designed to fight an enemy.
What if we were to treat the Confederates during the Civil War as criminals instead of enemy soldiers? We could send the Keystone cops out after the Confederate Army in Gettysburg, Pennsyvania instead of Mead's Army, what do you suppose would happen if we did that? The Confederate Soldiers are after all US citizens, so therefore the US Constitution applies to them, they cannot be arrested and kept in confinement without a trial or access to Lawyers. If we acted as robotic policemen and treated the Southern Rebellion as a series of crimes such as murder, arson, illegal militias, destruction and theft of Federal government property etc and tried to push that through the courts, we would have lost the War, but you seem more concerned about process rather than results. So long as we mechnically do what the Constitution says were supposed to do, the outcome of the War doesn't matter, we can lose all knowing that we did our duty according to the book.
Some unscrupulous politicians are out for power at any cost. They attempt to exaggerate any emergency to create justification to revoke civil liberties. The actions in the U.S. have done exactly that. The real terrorist threat could have been taken out in a matter of months, but it has been perpetuated for over 5 years now to create justification for dictatorial authority of the federal government. The laws of the U.S. were modelled on ancient Rome. Rome started as a republic ruled by a senate. It slowly became a military dictator ruled by a Caesar. The title Caesar was supposed to be an administrative leader where the senate has more authority. The same is happening in the U.S., the President is becoming Caesar, and authority of congress is being co-opted by the President. Those congressmen who think they can gain power as well are complicit with this.
There are some unscrupulous politicians that don't care about their country enough to wish that it wins its foreign wars with an enemy, they care only about gaining some political office and not about solving the problems of America. They figure that if the US suffers some major defeat to an inferior enemy, then there will still be enough left over of America for them to gain that office and defeat rivals in the next election. The Democrats have some influence in Congress, but they also want the White House, and one clear path to the White House as they see it is to make sure that the United States loses the War. George W. Bush wants an additional 20,000 troops sent to Iraq, but the Democrats in Congress aren't going to give them that flexibility, they want to "hog tie" him and drag him and the whole country down to defeat by a band of criminals, then they will say that as Commander in Chief it was George Bush's responsibilty to fight the War and he lost, thus he was an incompetant president and by extention all Republicans are incompetant. Of course by cutting off funds Congress wouldn't let the President be Commander in Chief, if they do that, then Congress takes responsibility for the outcome of the War, and if they lose, they will be blamed for it.
The ballistic missile defence system cost a hell of a lot of money. Tests showed only 1 out of 3 hit their target. Initially there were planning to install 10 missiles in Alaska. That could only intercept 3 incoming missiles. Russia had 8000 nuclear warheads before the reductions started, most of them on missiles. I don't know how many they have now, but it could easily overwhelm that defence system. China as 12 missiles, so who is the defence system to protect against? North Korea has been developing a two stage ballistic missile, and a nuclear bomb. Tests showed both don't work very well, they're nuclear bomb fizzled with very little power. The missile also failed and had to be self-destructed. However, they could conceivably build a pair of nuclear armed missiles aimed at the U.S. But if they used one, the U.S. would respond by saturation bombing their country with strategic thermo-nuclear bombs. All you have to do is say that and they can't ever use their weapon. So what is it for? If the U.S. invaded North Korea it would be even easier than Iraq. The execution of Saddam Hussein demonstrated what happens to the leader of a country the U.S. doesn't like, so if their country fell the leaders would have nothing to loose. So the only use of this weapon is to retaliate upon loosing. The only use for the ballistic missile defence system is to stop that retaliation. So the ballistic missile defence system is part of a first strike against North Korea. Condoleezza Rice has said the U.S. has no intention of mounting a first strike, but keeps demanding North Korea stop their nuclear reactor program. Design, development, and construction of the first 10 defence missiles cost $80 billion. In the 1990s the cost for a Mars Direct mission to Mars was estimated by NASA's budget guys to cost $20 billion for the first mission plus $2 billion per mission after that. There has been some inflation since then and NASA projects tend to overrun their budget so let's say $40 billion today. That means the missile defence system cost twice the price of a manned mission to Mars. Furthermore they deployed 10 more defence missiles in Alaska, and 20 in California. The sheer cost of all this is horrifying, and there really aren't any spin-offs to the commercial economy. North Korea reminds me of the mouse that roared.
The funny thing is that the ABM system would be an argument in support of not invading Iran to stop their nuclear missile development, but here you are opposing that very system which would bolster you argument for this. Missile defense is certainly a less aggressive posture than invading and occupying Iran to prevent their nuclear missile program from being developed.
Iran's nuclear program is equally unimpressive. Europe is dealing with Iran, there's nothing positive the U.S. can contribute. The best thing the U.S. can do with Iran is stay out of it, let Europe handle them.
But without the ABM system which you oppose, there is nothing to stop their one feeble missile from destroying one of our great cities full of liberals criticising the War in Iraq.
A large issue here is the appropriate use of intervention throughout the world. Many third world countries deliberately played off the Soviet Union against the United States to ensure neither had significant impact on their country. Now that the Soviet Union is no more, the United States is the only country attempting to be a superpower.
Actually China is too, and Putin hasn't given up on Russia. The difference between you and me is I don't view dictatorships to be equal players with properly elected governments in democratic countries. I don't give a fig about what the head honcho strongman of country X thinks, if he's not properly elected, he is not a legitimate representative of that country. If the people were to elect a Chavez and her were to seize power, take over the media and try to destabilize his neighbors for no reason other than to aqcuire power for himself, this calls into question the judgement of the people who elected and reelected him, perhaps they aren't ready for democracy yet, and perhaps they aren't ready to be an independent country either, I'd be happy to have Brazil take them over. Perhaps we should support a Brazilian version of Manifest Destiny and get rid of Chavez by getting rid of Venuzualia. Its people are certainly dumb enough to elect leaders who so obviously want to overthrow democracy, so they wouldn't mind if their Spanish speaking population were to suddenly become a minority in an enlarged Brazil. They have no right to complain after all, since they threw away their rights when they elected a leader that wanted to take away their rights.
Those counties who insist of independence are now left with a problem, how to ensure the United States does not rule them.
Or perhaps their people ruling them instead of they ruling them. The main thing a leader of an undemocratic country wants is to preserve their power, they don't want the US ruling them not because they care about their countries independence but because they would lose there power over their countries in the process. If the US were to hold elections in their countries, the dictators would still lose power, that is what they are worried about. Independence is meaningless without freedom, it means something for the nation's leaders, but not for the people in those nations. If a strongman rules them or the United States makes no difference to the average citizen. if you want the average citizen to have a dog in this fight, then give him some freedom and democracy. If you care only about independence, then you have to persuade the people to fight for their dictator's right to rule over them independently, which is what that dictator is actually concerned about.
Those who committed the terrorist acts are criminals who killed thousands of people; they have to answer for that. The sane course of action is to root out al-Qaeda and bring its members to trial. I have to emphasize trial. It is a crime; military action is revenge, court trial and sentencing is justice. Revenge results in a cycle: those who you seek revenge upon will be offended and seek revenge upon you, then you seek revenge for their action, and they seek revenge for yours, etc, etc. Justice puts an end to the cycle, but you have to capture the accused alive to bring them to trial.
Which is why we invaded Afghanistan. Fighting terrorism only when they come into our country is much like that missile defense system that you criticize, its not going to get every one. When we can't stop every missile that comes into this country, it doesn't make sense to let things develop in the world to the point where our enemy gets to launch them at us, and the same goes for terrorists, if the problem comes from another country, we have to go to that country to root them out.
Robert wrote: Today's Winnipeg newspaper had pictures of the new Prowler UAV based out of Grand Forks, North Dakota. They're proceeding with arming the Canada-US border. (Shudder)
Yes, I noticed a similar headline. I am stymied as to why there is a "need" to "secure" the northern border in that fashion.
Strict controls at major border crossings only should suffice, no?
I'm only 50 miles from Mexico [for the past 15 years], and thus a long way from Canada [though was born/raised/lived in Iowa & Nebraska until 1992]...but I've never known any trouble coming out of Canada with the exception of 2 or 3 suspected terrorists trying to cross over into the U.S. All the 9/11 terrorists were IN the U.S. on visas (some expired) for years, we're still allowing Mid-East immigrants in.
Canada is so laid-back and calm compared to the U.S. Being hypervigilant/suspicious about Canada seems patently absurd.
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And it's home to Hayden Christensen and William Shatner...heck, I love Canada.
Lol!
It is the price we pay for being a Superpower. Canada is just a staging area for terrorists, they aren't going to target Canadians too much. Why should they, they want to preserve their beach head for making attacks on the US, Canada's laid back attitude suits them just fine for this, they wouldn't want to do anything to spoil it, like explode a car bomb in Ottawa for instance. The USA is the one that's bothering them the most, the one that's giving aid to Israel and meddling in Middle East Affairs, and it has the big bulleye on its back. Canada benefits from this, but it doesn't want to rock the boat and get too many Arabs mad at it, letting the US take all the hits, at least that's the way it seems to go down. The price Canadians pay for this of course is a little more difficulty in getting into the US. If Canada was as vigilent as we are and we were to pool our resources into guarding and screening those who come into our areas, then I don't see any reason to pay any special attention to the US/Canada border.
Then I have an interesting idea for a flush toliet. You flush the toilet and the human waist empties into a holding tank, then the valve between the toilet and the tank closes and the valve between the tank and the outside opens. The human waist gets sucked out and deposited onto the Martian soil right next to the hab. I suppose the urine either freezes or boils away, the solid waste would turn into a fine powder and all the liquids inside boiled away. Over time a sizable pile of human waste would accumulate right next to the hab, at least it wouldn't smell.
That scheme would not preserve the wastes for potential future recycling - you'd need to vent the holding tank/boiler at the top and skip the "deposited on the Martian soil" step. But yes, that's the basic idea. Store (not strew) the effluent nearby, and come back to it later if we decide we care.
I wonder how much room two years worth of food would take compared to the facilities to grow new food? Seems to me that if they were serious about growing food, they'd need to bring along an agricultural specialist or two. Growing food is fairly labor intensive. You'd probably need a full time farmer to take care of the food needs. One person growing food is one less person exploring Mars.
By my estimate, the equipment needed to grow food for a crew of six would take about as much mass as a second hab. It should be sent seperately, and preferrably wait until well into the first mission. And its setup and operation will take more than one person's man-hours of work per day - it should be spread between two or more people.
If you're just scouting, it's best to leave the greenhouse on Earth.
It would seem sensible then to have one base that all missions keep on returning to. A preferible location might be at the mouth of the Vallis Marinaris. Water flowed here, there may be some frozen water underground. So the sensible thing would be to drill down until ice is hit, and then apply heat to melt the ice. Recover the vapors at the ambient air pressure and then condense it under pressure into pure water for drinking purposes, fuel production, rehydrating food supplies, and agriculture. A dedicated greenhouse would be added and some personell to grow the food, later on another hab might be added for raising chickens.
I’m curious Robert. Were you also against Clinton sending cruise missiles into a country to try and get Osama Bin Laden in response to an embassy bombing?
Yes. The only difference between a cruise missile and a truck bomb is price. Using terrorist tactics against terrorists simply justifies their activity. To quote the philospher Friedrich Nietzsche, "that which does not kill you will only make you stronger". A cruise missile attack makes those killed into martyrs, it will be used to recruit those pissed off by American military actions in their countries. The terrorist organization will see this as an escalation; they will mount an even larger, more dramatic terrorist attack. Oh wait! They did. Told you so.
Your arguments are designed to make all resistance to the enemy seem futile. If you fight them, the enemy only grows more numerous and stronger. Just like the Nazis only grew bigger and more powerful when we fought them and they withered away when we showed them no resistance. Why don't we just hand over all our tribute to them and get it over with? Might as well if you think fighting the enemy only makes him stronger and more powerful, since we can't win as you say, we might as well surrender and submit, starting with your children I suppose. Better get ready to send them to those Madrassas I think. Millions for tribute, not a penny for defense! I wonder what John F. Kennedy would think of the modern Liberal, always trying to weasel and find an excuse not to fight the enemy. Another liberal once said it best, "Every once in a while the tree of Liberty needs to be watered with the blood of Patriots and Tyrants!" That old liberal tradition of fighting for one's liberty is lost among modern liberals of today, they are ready to bow to any king or tyrant that wishes to conquer us, just so long as they don't have to fight.
Look at it this way, we only lost 3000 soldiers in this entire war, the Media won't report on how many enemy combatants were killed. I think the Media just doesn't want us to win. You and all the rest of them are only focused on President George Bush, you care about nothing else in the World except making George Bush a failure, so its anything you and the liberals and the Media can do to sabotage the war and make us lose, then you will say that the superior enemy defeated us and you had nothing to do with it.
512 Commanders-in-Chiefs are not good at winning a war, they are only good at losing one, and so the Democrats follow the strategy of "lose to win". I tell you now, if we lose the War, it will be because the Democrats have cut off funds, not because of anything the Insurgents and terrorists have done, it will be because they have too many allies in teh Democratic Party in Congress for us to possibly prevail. If and when we lose this War, I will blame the Democrats, and just watch as they freeze the funds to NASA, so it will be forced to cut science programs so it can continue to operate the Shuttle and get ready to send people to Mars, just you watch. if it comes to the Shuttle or Ares, the Democrats will pick the Shuttle every time, because it does nothing spectacular while employing alot of people.
Democrats just love humilation and defeat, the love to roll around in it, in fact the only things they love to win are elections, that puts them in charge so they can lose everything else, just you watch. I'm in "I told you so" mode.
Do you envision a Mars base sitting next to a huge pile of garbage?
Yes.
Almost anything worth recycling will keep at -60C temperature, and all that's necessary to store it for centuries is a properly secured plastic cover. If we like the location, equipment for 100% recycling can come later. If we don't like the location, the trash midden will be the least valuable thing left behind.
Then I have an interesting idea for a flush toliet. You flush the toilet and the human waist empties into a holding tank, then the valve between the toilet and the tank closes and the valve between the tank and the outside opens. The human waist gets sucked out and deposited onto the Martian soil right next to the hab. I suppose the urine either freezes or boils away, the solid waste would turn into a fine powder and all the liquids inside boiled away. Over time a sizable pile of human waste would accumulate right next to the hab, at least it wouldn't smell.
I wonder how much room two years worth of food would take compared to the facilities to grow new food? Seems to me that if they were serious about growing food, they'd need to bring along an agricultural specialist or two. Growing food is fairly labor intensive. You'd probably need a full time farmer to take care of the food needs. One person growing food is one less person exploring Mars.
In the shorter term though, the added equipment mass, power demand, and risk of relying on a recycling system must be weighed against the simplicity and reliability of a open-loop systems.
Do you envision a Mars base sitting next to a huge pile of garbage?
I'm reading "The End of Faith" by Sam Harris. It's a pretty frightening analysis of [quote from back cover blurb] "... the dangers and absurdities of organized religion ..." I'm thinking of starting a thread about the influence that religious faith may have in delaying the development of travel in space, but I can't think of a name for it that won't just start another harangue about religion, instead of space travel. I hope some of you find time to read this book and comment upon it.
Religious faith might actually accelerate space travel too. The Pilgrims came to Massachusetts because of Religious faith. Skeptics might question why we spend so much on space travel and seek to cut the budget, thus delaying space travel, they have in the past after all. But some religion that has a Manifest Destiny that it believes is to spread itself throughout the Solar System might push space travel ahead. Religious faiths that want to establish that perfect society according to their doctrine might pass the collection plate and establish their own colonies on Mars, and live according to their own philosophy. Those bean counters might perceive no benefit from space exploration, while the religious cults might find it a change to get away from the "corrupt" influences of the "Global village".
Who your friends are determine who you will become?
Citing a movie to make a point (and a bad movie at that)?
You seem a little disoriented there. I wasn't talking about movies.
If you don't send in troops to shoot people, why give them guns?
I wasn't talking about the US Arming the Brazilians to go invade Venuzualia. Brazil already has an Army, and its not such a basketcase that it needs assistance from us in order to have one. Chavez is spreading revolution in South America, since the Venusualian people elected him and reelected him, I have doubts about whether they are capable of having a democracy, therefore I wonder whether Venuzalia should exist since all it seems to be is a platform for dictators to assume power and to use it oil wealth. I think Brazil is more deserving than some dictator. Brazil is a more responsible country and its people take their responsibility of choosing their government seriously rather than electing trouble makers who try to destabilize the region.
Oh, and Tom is still a monkey.
If I was a monkey, I'd be typing something more like this:
dbfkdggkcf djufndhdjkfbskfghsjkfghsn dhdbgfhjdgdhvbgsdgqklxopfhskv
Rather than being any sort of "leader of the free world", the U.S. has allowed itself to fall to the level of a banana republic. American founding fathers used to read works by people like Plato and Democritus, they studied the legal system of ancient Rome. Now they're studying Saddam Hussein and Osama bin Laden, and becoming them.
I find this excessive, Robert. You're smarter than this.
The Democrats won big time in the last election. They're seeking to reverse a bad course, to fix/resolve issues. The US public elected Democrats, thereby overthrowing a lot of Republicans.
Doesn't that give you hope? Light at the end of the tunnel so to speak? A positive outcome?
Can we give a bit of credit? All is not lost.
And we both know Pres. Bush isn't going to be in office forever.
Every entity (human, nation, whatever) goes through dark periods. Unfortunately we've been through one. 4 years from now the situation could be entirely different (here's hoping).
I heard that Al Qaeda celebrated the Democrats elections to Congress, and the first Muslim American to swear on the Qoran upon taking the oath of office was also a Democrat, I'd say the terrorists are the ones who see light at the end of the tunnel with this election victory. Meanwhile in the wake of this election Victory, Hugo Chavez decides to assume dictatorial powers in Venuzualia. I guess with Democrats in power, he calculates that the US will do nothing to stop him from forming a mini-Soviet Block in the Western Hemisphere. Iran's emboldened already, is developing nuclear weapons and its waiting for its birthday present of Iraq from the Congressional Democrats, probably at the end of this year when money for Iraq operations runs out. I just wonder at the timing of the Bush administration when he waited with his new plan for Iraq to ask the Democrats for money rather than the Republicans while they are still in power.
Hugo Chavez may be right, we may have to invade his country because he will make it necessary. We can't have some new dictator threatening our freedoms in the Western Hemisphere. Perhaps Brazil should annex it, since by voting for Hugo, the Venuzualians have demonstrated that they don't want to run their own country.
If you add buildings, you are increasing the available surface area, but not increasing the amount of sunlight.
Effectively, averaged over the entire city, yes. The Citicorp building gets an increase in potential collector area at the expense of decreased illumination time for other portions of the city. However, power generation is unlikely to be completely homogenous, even with distributed solar power.
So rich people who live in high rises above everyone else get solar power, while poor people who live in the shadows of those buildings do not. I call that hardly a colution at all.
Another important consideration is that New York City uses so much electrical power that portions of the city cannot obtain enough power from outside the city - the state electrical grid won't handle it.
Then the solution is obviously to fix the electrical grip so that it can carry more current, that does not require a work around such as adding solar panels to tall buildings. If the problem is not enough capacity, then you add more.
New York City must generate about 75% of its own electricity, using power plants right in the city. If it could be generated on site by solar panels without significant cost over what it would take to upgrade the grids (upgraded in order to, say, pull in power from an SPS microwave receiver in the countryside), that would be competitive with anything that requires upgrading the power grid to pull in more electrical power from outside sources.
The power grid needs to be upgraded anyway, we saw what happens when we do not upgrade the powergrid, and using Solar panels as an excuse not to upgrade the powerlines is a bad idea. Blanketing buildings with solar cells is an eyesore as well. How would you like to go to work in an office building whose windows are covered over with solar cells? With no natural light coming in through office windows, you'd be forced to rely on artificial illumination. and I doubt the roof of a very tall building would have enough solar collecting area to supply all the floors underneath, so, you'd end up having to cover over the sides as well, and this works for tall and skinny buildings, tall and fat building are even worse. Volume after all increases more with size than surface area.
Estimating from US EIA and US Census records, the approximate average electrical power requirement of New York City is about 0.5 GW. That's a little over 60W per person, and can be supplied by a 10% efficient fixed solar array of 1300 hectares total area at that latitude. That's less than 2% of the land area of the city. There's no need to add new buildings just for solar power plants.
At $20/W installation costs (for any other city in the country, it'd be <$4
), that's a total installation cost of $10 Billion (US). I'd love to be able to install a similarly sized SPS and receiver stations for that price, but I don't think we can.
The power demand of the urban area around New York City is similar, only distributed over a larger area. So, $20 billion, max.
We would do better to go solar right here on Earth, and either leave SPS alone or use it exclusively in space.
Do you really want to replace the batteries of an apartment building, when they wear out? batteries are not infinitely rechargeable, they have a lifetime and need replacing.
What prevents the same in the United States?
Constitutional checks and balances, seperations of powers, and a bill of rights, that's what. If the people of Mars want a government that doesn't fall into tyranny, they should follow that successful model. Many governments leave certain things out of their constitutions because they want to be different from the United States and write their own original Constitution, and in the process they leave certain things out, perhaps intentinally, and this provide opportunities for tyrants to rise to power. The Russian Constitution made the office or President too powerful, and the result is a dictatorship, and a censored press. People sometimes want strong governments because it makes it easier for that government to solve problems if their is no debate or opposition, the problem is then, you no longer have the ability to get that government to do what you want.yeah but the us has the highest prision population of the world, and is one of the most wasteful nations on earth!
Certainly China has a higher prison population than we do, and North Korea is one great big prison, and its population is larger than the number of people we have in prision.
They aren't going to find evidence of life proof of the lack of it on the first mission to Mars anyway unless its a blind stroke of luck.
The facts remain, until Zubrin came along, NASA didn't have even the remotest possible manned Mars mission architecture.
And I think its vital that space exploration remain "dangerous" to build public support.
No danger. No heroes. No heroes, no budget.
Zubrin's contribution was the concept of "living off the land" and it's unlikely that the first mission will depend on ISRU based fuel for the ascent vehicle.
Why not? The technology can be proven without going to Mars, and there is also a sample return mission that's slated to test ISRU. I think by the time we send people to Mars, we should know what were doing and not be afraid that Martian carbon dioxide will not react properly to make fuel.
the biggest problem with Solar cells is that they don't work in cities so well, especially if you live in a high rise. If you live on the second floor of a 5 story building, all the tennants must share the same roof, and the roof won't have enough area to supply all the occupants with electricity. Also some buildings will tend to shadow others. If you wanted to supply New York City with electricity from Solar Cells, you'd have to blanket the suburbs with them...
No.
A photovoltaic cell only responds to the angle of incident light, not the angle of the cell. Thus, if the horizontal roof of the building is too small to hold an adequate array, you can put them on a well lit vertical wall instead.
The Citigroup Building,for example, a fair-sized skyscraper in New York, has an average wall area of about 1.2 hectares on each wall. About half of this is shaded during the day, and the north side is unsuitable for solar panels, so it offers about 1.8 hectares of useable wall area, or around four times its roof area (which, if you'll look at the picture, is tilted to increase its exposed area - for a flat-topped skyscraper of the same size, the wall area is seven times the roof area).
This building could be retrofitted with a 1 MW photovoltaic powerplant. Many other suitably positioned buildings in New York City could be suitable modified, including, I'll bet, about half the houses in the suburbs.
New York City gets the same amount of sunlight as does an equivalent area of flat land without buildings. If you add buildings, you are increasing the available surface area, but not increasing the amount of sunlight. The more people you put in an area, the less area for solar energy there is per person. The tallest buildings stand out rising above all the others, while shadowing other buildings, but never the less the same amount of sunlight reaches the City as an equivalent area of vacant farmland. When people live close together and on top of each other, each doesn't have sifficient room to spread his solar collecting array. Most people live in cities where rooftop solar panels aren't an option. You probably need as much collecting area as the total amount of floorspace in New York city, except that solar panels can't be stacked on top of each other as people can.
There is no reason to travel to outer space in order to find the acreage necessary for solar power conversion on Earth. Solar power satellite stations are not necessary, and are not cost effective in comparison.
The first couple of missions need not immediately lead to a base, but should be sent to prime candidate locations; the critical resource for a base is access to water, and we need to make sure it can be extracted. A manned DRM-sized mission would best maximize the chance of finding a good supply of it for what we can afford.
The pressurized rover doesn't need to be THAT big, its not an RV more like a big SUV, it just has to be big enough to travel the terrain with two astronauts normally or six astronauts in a pinch and carry/power the heavy drill. The DRM plan calls for a rover in the 5-10MT range to be carried with the ISRU plant and the MAV, which would be about right. Of course it will have the ability to drive by remote, albeit not as well perhaps. The larger size of this rover will let it traverse terrain that the MarsDirect "enclosed golf cart" simply couldn't, and do useful work when it gets there.
A big rover could be powered directly by a nuclear reactor and would have a virtually unlimited range and direct communications with Earth, the idea being that you might want to travel anywhere on Mars and you'd have two years to do it. You might want to go to the North Pole, then traverse the Valles Marineris, descend into the Hellas Basin, and climb to the summit of Olympus Mons.
There are alot of people less interested in what a manned Mars mission would accomplish on Mars than what it would do on Earth.
Specifically for the United States.
And whats that supposed to mean?
The purpose of the first Mars mission should be to set up a base that would be used by the next mission and the mission after that. Perhaps the pressurized rover can be prepositioned ahead of time, it should be similar to the 2 Mars rovers in that they can be controlled from the Earth to a limited extent, except that it would be much bigger, it probably should have some camera's attached and other instruments including a sampler arm and a drill. All these things can be controlled from the operators or programmed to do something with commands from Earth. I think the ROver should have the mass of a Hab, and thus it would require a seperate launch just to get the rover there ahead of the manned expedition. Now what would be the best way to land a pressurized rover, the size of an RV on Mars?
Well, i can see this spiralling into an ideological pissing match so i will stop here.
It takes all kinds to make the world go 'round
Well you called the founding fathers of my country terrorists, as I am American, I think you can see how I might be offended by that, and I see you are from Canada, thus maybe your ancestors were Red Coats. I for one had ancestors who were Continental soldiers, including a relation to Martha Custis Washington.
Well, the people that started the war of independence were certainly terrorists to the British at the time. The big difference though is they did not go bomb Brittan to win their independence. They also had wide spread support in America. In hind sight it seems that their revolution brought a better life as it was a rebirth of democracy. Later to avoid unrest in the colonies the British allowed, “responsible government” in Canada.
So your saying that if a Continental soldier in blue shoots at a British regular from behind a rock, that is an act of terrorism? I think that is stretching the definition of terrorism quite a bit. The Continental soldier conceils himself because he doesn't not want to get hit by a musket ball fired from the British regular that he is shooting at. So are you saying that if Continental soldiers didn't stand erect in perfect squares to fight British regulars in perfect squares in a flat open field, they are being a terrorists? I dispute this definition of terrorism. Terrorism is more like planting a bomb in an open market place to kill civilians, it isn't shooting at British regulars from behind a rock or place of conceilment. Just because the Continentals weren't so dumb as to wear bright red uniforms and to stand in perfect squares and rectangles as they march in uniform and load and fire their muskets to the beat of the drum and the wail of bagpipes, doesn't mean that they were terrorists.
Well, i can see this spiralling into an ideological pissing match so i will stop here.
It takes all kinds to make the world go 'round
Well you called the founding fathers of my country terrorists, as I am American, I think you can see how I might be offended by that, and I see you are from Canada, thus maybe your ancestors were Red Coats. I for one had ancestors who were Continental soldiers, including a relation to Martha Custis Washington.
Yeah, that's the idea. Just make the space environment realistic (no ficticious gravity fields, no sounds outside the ship, no visible laser beams in vacuum, no beaming of crew members up and down, no control panels going up in smoke and flames, lots of dressing and undressing dishevelment and general messiness due to weightlessness) now that we have the capability to produce such made-on-Earth digital video. The ongoing series where the characters learn to live for up to a year en route, in space instead of on Earth, somewhat like a "Wagons West" or "Little House on the Prairy" saga, perhaps. Although a "Third Rock from the Sun" comedy series might not be such a bad idea either. Okay, I'll drop it for now, and get back to the serious stuff....
How about a Space Western, except do it realistically? The best way to achieve realism is to do it all CGI, that way no money is wasted in creating sets. So maybe the characters don't look quite real, at least the whole movie would have a consistant unreality to it all, and then you can deal with the real stuff like the physic. I mean how would you like the be the actor, that shows up for work everyday to hang from blue cables to simulate Mars Gravity? The involvement of actors and sets makes the whole thing that much more expensive, do away with all that and make the whole thing computer cgi animation, and you can reduce costs considerably.
Now as for the Western Part. What you basically need is a good reason to bring guns to Mars so you can have shootouts. In the scenario, space transportation costs would have to be reduced considerably to have any hope of families traveling their to seek their fortune.
What are the ways to reduce space transportation costs so it would be believable?
A reusable 2 stage scramjet shuttle?
A Space Elevator?
Single Stage Rockets with metastable monopropellents?
Solar cells are also heavy, and they become less efficient as you concentrate sunlight on them, the biggest problem with Solar cells is that they don't work in cities so well, especially if you live in a high rise. If you live on the second floor of a 5 story building, all the tennants must share the same roof, and the roof won't have enough area to supply all the occupants with electricity. Also some buildings will tend to shadow others. If you wanted to supply New York City with electricity from Solar Cells, you'd have to blanket the suburbs with them, clear cutting the trees and using up expensive suburban real estate. New York City would have to be surrounded by a field of black stretching out to the horizon. Also the further north the city is, the larger the collecting array would have to be. I think it would be much better to collect power in space and then broadcast it down to Earth. Blanketing the Earth with solar cells surrounding each city is probably bad for the environment. In the North East, you'd have to clear cut forests, and this would contribute to soil erosion, also the heating effect would be similar to surrounding New York City with a giant parking lot. If you are going to waste so much valuable real estate, you might as well build the parking lot too. Raise up the solar cell collecting surface and put a parking lot underneath. New York City is in bad need of parking space anyway, so build a giant parking lot around New York City, and force them to use Mass Transit to get in. As for the people living in the Suburbs surrounding New York City, too bad for them. That house with the solar cells on the roof that is too close to New York City will have to be torn down, as well as those of all their neighbors too. Tsk tsk tsk.
I'm not sure why everything about this ties into WW2, their are far better and robust examples to liken this current war to.
It was the last war we've unequivocally won, that is why I use that War and use it to draw lessions. the Korean War ended in a Stalemate, and the Vietnam War effort was sabotaged at home, it is better to draw lessions from a War that was fought sucessfully and draw lessions from it on what we did right, rather than argue on the mistakes of poorly executed past wars such as Vietnam.
Thus there is no excuse for a professional army, the US Army, for being defeated by a band of stateless criminals with no national resources to call upon.
I find it very irrational that your patriotism can blind you to the facts. The fact is this is exactly how the US defeated the Brits to gain their independence. But of course, early Americans didn't call them selves terrorists. They were freedom fighters. This is currently a roll reversal.
Yes, as I recall, our Continental Soldiers were blowing themselves up, were murdering the women and children of both Loyalists and Patriots, were planting improvised explosives made from cannonball shells of solid shot! We kept the British on the run until we surrounded London and had King George the Third begging for mercy as blue-coated Continental soldiers marched down the streets toward Parliment yelling "God is Great!" and blowing themselves up!
I don't seem to recall ever reading that history book. I doubt a terrorist group would set up a democracy or a republic, they'd rule by terror instead.
But, in the interest to avoid this becoming an auguring match, BACK TO THE TOPIC!
Saddam was charged with the killings of 142 people. I hardly call that crimes against humanity.
He was charged with killing 142 people because that was all that was needed to get him executed, charging him with the other hundreds of thousands if not millions of murders would have kept him in court so long, he would die of old age before he ever saw the hangman's noose. You are using facts dishonsestly here, by implying that because he was charged with 142 murders, that was all that he killed. The courts simply did not have the time to handle the murder cases of all those whose deaths he was responsible for, you can only execute a man once, so they picked a number of cases that they felt were sufficient to get him executed, anything else would have been a waste of time and resources, they even said that themselves.
humanity; all human beings collectively; the human race; humankind.
Since these blokes made an attempt to assassinate him and this was his retaliation, this is one bullshit charge. But it was the only one that the US put on him without implicating them selves. The US wanted Saddam dead more then anyone else because he was their fuck up. They sold him the gas to kill the Kurds, the means to create nuclear weapons. The US had a huge role to play and they wanted people to forget about that.
You are one messed up Saddam sympathizing Lib! You give other liberals a bad name, ones that are actually concerned about the state of humanity and democracy rather than one overriding obsession to get Bush!
Have you seen the video? It's disgraceful. The Iraqi government is putting out a probe to look into the behaviour of it's guards during the "circus" event. By showing the world that you cannot even show honour to the face of your former ally and current enemy, that shows great weakness.
Oh boo hoo! Poor poor dictator! Sniff Sniff. You remind me of that character in the Movie Return of the Jedi, you know the one who was crying over his poor pet Monster/Rancor that Luke Skywalker killed when Jabba dropped him into its pit. You cry for all the monsters in the would, but not for his victims. Sorry, you not going to convince me that Saddam, Hitler, of Genghis Khan are all cute and cuddly, just give it up.
Now, lets address this "who is our enemy" issue.
Terrorist; One that engages in acts or an act of terrorism.
Terrorism;
1. the use of violence and threats to intimidate or coerce, esp. for political purposes.
2. the state of fear and submission produced by terrorism or terrorization.
3. a terroristic method of governing or of resisting a government.Now, I agree with you Tom that to win any kind of engagement you need a very firm hand. You need clear rules of engagement with the flexibility to eliminate your foe. If you do so, you are in fact committing terrorism. No amount of fancy talk can ignore that. So, to declare that you are fighting a war on terrorism is akin to the war on drugs.
You can make progress, but with such vague descriptions of the battle field, you will never win.
Nothing but self-defeating rhetoric and arguments for giving up the fight.
The thing is, we don't want the terrorists submissive or subserviant, we want them dead or destroyed, and since our objective is to destroy the terrorists, we don't care whether they fear us or not. So you cannot say we are waging terrorism, rather we are waging a war to erradicate them. Your typical terrorist doesn't have the resources to destroy us, so they try to terrorize us instead, but that doesn't work, it only makes us mad. I was never afraid of terrorists, even during 9/11, instead after that attack, I wanted revenge. If they are going to kill 3000 Americans, I want my country to exact a high price for that, I don't see myself ever surrendering to those terrorists, nor forgiving them, no matter what the Democrats may do, as far as I'm concerned they are the enemy, ever last one of them and the people that support them.
How does all this relate to space? Solar power satellites don't make sense.
Batteries are fairly heavy, and houses aren't the only consumers of energy, there are also vehicles. When was the last battery powered airplane that you saw? One possibility for SPS is to power airplanes, transmitting microwaves to them and powering their engines instead of burning fossil fuels. As for birds getting fried, birds don't fly at jetliner altitudes. All that's required is the ability to track the air planes.