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On Apr 12, 2:46*pm, Marvin the Martian wrote:
On Sun, 12 Apr 2009 14:04:47 -0700, BradGuth wrote: On Apr 12, 12:12*pm, Marvin the Martian wrote: Tired of all the flame wars? Insane posts? Off topic postings? Want to try a moderated forum? Then Get your ass to Mars! http://OnToMar.org/forum/ A new forum where you can discuss space policy, particularly if you understand why Mars, and not the moon, should be our immediate goal of our space program.http://www.ontomars.org/blog/?m=200903 Why the Moon isn’t a Stepping Stone to Mars Mars has an atmosphere however thin, the moon doesn’t. A Mars day is 24 hours and 40 minutes, a moon day is about 14 earth days. Temperatures are different between Mars and the Moon. The new technologies needed to go to Mars like the simulated gravity tether and large mass aerobraking to get to the Mars surface, have nothing to do with the Moon. So, other than they require totally different technologies, the moon has little to offer in the way of Mars development. The moon would be a good place to build telescopes. Better than Mars. That’s just about the only thing the Moon has going for it. Now, what does Mars have? Climate Science. Many people are interested in the science of climate change. Mars is a cold planet that once was much warmer. Further, like earth, the climate of Mars is also changing. Ice core samples taken on Mars would advance the science of climate change a great deal. Since we WANT a warmer Mars, tinkering with greenhouse gasses on Mars would not only help to terraform Mars, but provide a great deal of science about climate change. You don’t get any of this by going to the Moon, the Asteroids, NEOs or any other dead rock. Biology The Moon, the Asteroids, and NEO are all dead, lifeless rocks. In the past, Mars had an ideal environment for life with a warmer environment and flowing water. What’s more, gas releases from Mars suggest that life may be there to this day. What a fantastic discovery it would be to find fossil life on Mars. And the probability of finding extra-terrestrial life on Mars would be the most significant scientific discovery since… well, FIRE. You don’t get this by going to the Moon. A Home for Humanity. Mars has carbon. Mars has oceans of frozen water. Mars can be terraformed. The moon has no carbon, trace amounts of water. It makes no sense at all for a carbon based life form made mostly of water to try and colonize a world where there is no carbon and almost no water. What’s more, because there is no volcanic activity or water on the moon, there are no ores. Materials like copper will be hard to gather on the moon. You can build bases on the moon, only on Mars can you build a colony. What’s more, you can grow crops in greenhouses on Mars, as the Martian day is close enough to an earth day that our plants can grow there in a greenhouse with a low pressure atmosphere. On the moon, the nights are two weeks long! * *Mars is the Gateway to the inner solar system Because Mars can support a colony and the moon can only support a base, Mars will eventually become humanity’s gateway to the inner solar system. Once every two years, the energy required to go from Mars to the Moon is much less than going from the earth to the moon! You can get much larger payloads into space from Mars than you can from earth. A Mars civilization would be a spacefaring civilization. The Danger of going to the moon Most of you are too young to recall, but in the early 1970s, when the Apollo program was returning bags of rocks from the moon, people were saying things like “We can go to the moon but we can’t cure the common cold” or “We can go to the moon but we can’t end poverty” and so one. People saw the product of the moon program: Moon rocks, which appeared to be ordinary earth rocks and were only of interest to scientist. The payback for space programs seemed small. Many people could put together a bag of rocks for far cheaper. Space programs seemed wasteful, and the Mars program was convicted by guilt by association with the Moon program in the eyes of public that didn’t know better. There’s a PAYBACK for going to Mars. History repeats itself. Today, it is very much like it was in the 1960s. We have a plan to return to the moon in 15 years or so. However, in 15 years , the people are once again going to see bags of rocks coming back from the moon. They will not see the discovery of extraterrestrial life. They will not see new discoveries in climate science. And they will not see an exciting new self supporting colony. WE didn’t learn from Apollo and we are in danger of making the same error. --http://OnToMars.org*For discussions about Mars and Mars colonization I agree, that Mars would make a super terrific off-world penal colony, that which I think only the rich and powerful should have to pay for. Then we can get our greedy and selfish selves back to our primary task of raping and systematically pillaging mother Earth for all she's worth, before our Eden is taken over by ETs that have other ideas. *~ BG So, you disagree with me, and are not going to actually discuss the merit of human missions and a human presence on Mars. Why did you post this stuff, tho? --http://OnToMars.org*For discussions about Mars and Mars colonization Talk to William Mook about how dirt cheap and easy life on Mars is, because you will get loads of infomercials and no naysay arguments as long as you do everything his way. Technically Mars is doable, though it's to/from is time consuming, a wee bit on the lethal side, and damn spendy by all known methods of research and accounting, of course that's other than by whatever William Mook and good old Zubrin think is doable for less than ten cents on the dollar. ~ BG |
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![]() "Pat Flannery" wrote in message dakotatelephone... Greg D. Moore (Strider) wrote: Reminds me of space bugs in the movie version of Stormship Troopers. They apparently could far glowing gas balls out their arse at near relativistic speeds. Yeah, I couldn't make heads or tails of that either; how were those asteroids getting to Earth anyway? My God, those things could fart with more accuracy than a sniper can fire bullets. :-) In the animated version of SST ("Roughnecks") the bugs were running around up on Pluto sans spacesuits. Apparently in Europe the movie was considered a parody along the lines of "Bill, The Galactic Hero", poking fun at the Gung-Ho Americans*. (I have to admit when you watch it with that concept in mind, it is pretty damn funny, I think the original movie had just that concept in mind, not the US, but humanity. The very last scene in the movie made the satire clear. Remember, the entire premise was that we were being invaded/infected by hords of mindless bugs instinctively attacking and dying en masse as if moths to a flame. And we were only holding them off with our 'advanced' technology. But in the very last scene, when they had captured the brain bug, they showed our 'scientists' trying to figure out how they think by ...ramming things it's throat...right! We were the ones invading/infesting their system. And our troops were the ones mindlessly going to their slaughter en masse. WE were the bugs/animals...THEY were the intellignent beings with the advanced technology, which was so far above us we couldn't begin to comprehend how they did it. That was great sci-fi imo. as they take the story and kick it up that extra notch into absurdity, rather like "Space, Above And Beyond" unintentionally did.... yeah, your flight commander carries a Kamikaze prayer around with him, and you are going to fly with _him_ into battle?) In my series "Space Command Ultra Marines ("SCUM") we shall see the dropping of the troops onto Glitch, the moon of Fubar in the Gremlin System, under the command of Commander "Snafu" Burnside...his bold plan of having the troops free-fall into the atmosphere and open their parachutes at around 500 feet would have worked brilliantly if only Glitch had _had_ a atmosphere. But the attack was not a complete failure, as much Flunki** military equipment was destroyed by the kinetic energy of the Space Marines striking the surface at around 2,000 mph, like human earthquake bombs. And even today on Glitch the craters they made show the outstanding accuracy of their drop pattern...as well as greatly simplifying the construction of "The Glitch Memorial Cemetery" which merely required tombstones to be added to the pre-excavated graves. * If that's the case, then Heinlein's ghost must really be ****ed. He saw BTGH BTGH? Back to God hour? as a direct slap military sci-fi in general, and his work in particular, and didn't ever talk to Harry Harrison again after it was published. To see SST turned into a parody would have _really_ torqued him off. ** A slow-moving but fast-talking race of intelligent giant millipedes bent on galactic conquest - one foot at a time. Pat |
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On Sun, 12 Apr 2009 21:48:00 -0500, "Jorge R. Frank"
wrote: Marvin the Martian wrote: On Mon, 13 Apr 2009 01:30:33 +0200, jacob navia wrote: Marvin the Martian wrote: Then Get your ass to Mars! http://OnToMar.org/forum/ (1) Mars is beyond current technology. Only machines can live in there. Any human expedition to Mars is just science fiction. Actually, NASA was planning on going to Mars right after Apollo, back in the early 1970s. This technology is almost 40 years old. And it's a good thing they didn't; they *thought* they had the technology but they didn't. There is no ****ing way that Apollo-era life support systems would have sustained a crew to Mars and back, Wait... SkyLab lasted 6 months of occupation and wasn't on the verge of breaking down when the last crew left. There was a lot of work to do, sure, but the Mars flight was tentatively planned for 1981, 8 years after SkyLab. "Life support would never have worked" sounds a little too "Capricorn One" to me. Brian |
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![]() "Marvin the Martian" wrote in message ... Tired of all the flame wars? Insane posts? Off topic postings? Want to try a moderated forum? Then Get your ass to Mars! http://OnToMar.org/forum/ A new forum where you can discuss space policy, particularly if you understand why Mars, and not the moon, should be our immediate goal of our space program. http://www.ontomars.org/blog/?m=200903 Why the Moon isn't a Stepping Stone to Mars Mars has an atmosphere however thin, the moon doesn't. A Mars day is 24 hours and 40 minutes, a moon day is about 14 earth days. Temperatures are different between Mars and the Moon. The new technologies needed to go to Mars like the simulated gravity tether and large mass aerobraking to get to the Mars surface, have nothing to do with the Moon. So, other than they require totally different technologies, the moon has little to offer in the way of Mars development. The moon would be a good place to build telescopes. Better than Mars. That's just about the only thing the Moon has going for it. Right, and our military has already laid plans to use the moon as a base for gathering intelligence for our missile defense shield. This is the true and only justifiable reason for our plans to return to the moon, for military purposes. "The moon is the ultimate high ground", according (to quote) our US Air Force. Don't you realize we are being lied to? For national security reasons as we don't wish to start a military space race to the moon with the Chinese. Oops! That ship has sailed ...hasn't it? Now, what does Mars have? Climate Science. The primary thing Mars has that is ....scientifically....interesting is the strong possibility of microbial life in it's past or even the present. We can fully study this question with robotic missions not only much much cheaper, but even much faster. It might take five years to build and land an advanced rover. Manned missions are still thirty of forty years off. By then we'll know all we wish to know about Mars. Even a casual analysis of our current space goal of using the moon as a stepping stone to Mars shows it's deliberately misleading. Meant to help the military gain the ultimate high ground on the moon. With manned missions to mars being nothing more than a straw man. Many people are interested in the science of climate change. Mars is a cold planet that once was much warmer. Further, like earth, the climate of Mars is also changing. Ice core samples taken on Mars would advance the science of climate change a great deal. Since we WANT a warmer Mars, tinkering with greenhouse gasses on Mars would not only help to terraform Mars, but provide a great deal of science about climate change. You don't get any of this by going to the Moon, the Asteroids, NEOs or any other dead rock. It's still an indirect means of learning about the climate of earth. And given it's distance and expense, a very inefficient way of advancing earth science. Not to mention the odd orbit of mars means it's climate of far more complex than on earth, complex meaning harder to predict and understand. Global warming on earth is an imminent crisis which requires the /most/ efficient ways of finding solutions. Not the most /diffucult/, slowest and most expensive way. Biology The Moon, the Asteroids, and NEO are all dead, lifeless rocks. In the past, Mars had an ideal environment for life with a warmer environment and flowing water. What's more, gas releases from Mars suggest that life may be there to this day. What a fantastic discovery it would be to find fossil life on Mars. And the probability of finding extra-terrestrial life on Mars would be the most significant scientific discovery since. well, FIRE. You don't get this by going to the Moon. A Home for Humanity. Mars has carbon. Mars has oceans of frozen water. Earth has more. Mars can be terraformed. A concept or goal that spans centuries is 'pie-in-the-sky' science for the simple reason it takes so long and so much effort only the most pressing needs could possibly justify the huge effort and time span. And pressing needs rarely spans centuries. This makes such concepts a logical contradiction The moon has no carbon, trace amounts of water. It makes no sense at all for a carbon based life form made mostly of water to try and colonize a world where there is no carbon and almost no water. What's more, because there is no volcanic activity or water on the moon, there are no ores. Materials like copper will be hard to gather on the moon. You can build bases on the moon, only on Mars can you build a colony. What's more, you can grow crops in greenhouses on Mars, as the Martian day is close enough to an earth day that our plants can grow there in a greenhouse with a low pressure atmosphere. On the moon, the nights are two weeks long! Mars is the Gateway to the inner solar system Because Mars can support a colony and the moon can only support a base, Mars will eventually become humanity's gateway to the inner solar system. Once every two years, the energy required to go from Mars to the Moon is much less than going from the earth to the moon! You can get much larger payloads into space from Mars than you can from earth. A Mars civilization would be a spacefaring civilization. Why is it always ...assumed...humanity is destined to, or will need to colonize the solar system??? I believe the first signs of an intelligent or civilized life is the ability to control it's environment in a sustainable way. And once we learn to do so, we no longer need to expand. Hence the logical contradiction with colonizing. If we don't know how to build sustainable societies on earth, how could we possibly succeed in space with the limited resources and unforgiving nature of space? Once we have learned to build sustainable societies/colonies on earth, we no longer need to expand to space. If we can't our colonies will fail. The Danger of going to the moon Most of you are too young to recall, but in the early 1970s, when the Apollo program was returning bags of rocks from the moon, people were saying things like "We can go to the moon but we can't cure the common cold" or "We can go to the moon but we can't end poverty" and so one. People saw the product of the moon program: Moon rocks, which appeared to be ordinary earth rocks and were only of interest to scientist. The payback for space programs seemed small. Many people could put together a bag of rocks for far cheaper. Space programs seemed wasteful, and the Mars program was convicted by guilt by association with the Moon program in the eyes of public that didn't know better. There's a PAYBACK for going to Mars. History repeats itself. Today, it is very much like it was in the 1960s. We have a plan to return to the moon in 15 years or so. However, in 15 years , the people are once again going to see bags of rocks coming back from the moon. They will not see the discovery of extraterrestrial life. Robots will have discovered it long before then. And given us millions of high res color pics on the surface of mars. So many it's as if we already live there. By the time men set foot on mars, it'll be ho-hum. We need a space goal that becomes more justifiable over time, not less. They will not see new discoveries in climate science. By the time men walk on the moon, where I live will be thirty feet underwater. I'm not exaggerating, for South Florida the most recent and respected projections show the entire south of the state underwater in .....forty years. Those projections came out last spring, a few months later the real estate market in South Florida bubbled, setting off a nationwide real estate panic and world wide recession. The effects of global warming are here already. It's too late to fix it. We need to 'circle the wagons' so to speak and start using our scientific abilities and resources as if our national existence were at stake. To the moon and mars define the antithesis to what is practical, logical and needed. And they will not see an exciting new self supporting colony. What we ....need....and need desperately is to create a new self supporing colony.....HERE ON EARTH. Unless of course you intend to move SIX BILLION PEOPLE to a space colony. How will the public respond to the notion of devoting our entire national science goal just so a few selected people can abandon the earth just before all hell breaks loose? Lucky few eh? I bet the public would embrace that notion with all the derision it can muster. At best to the moon and mars is a Guilded Safari for those living in Ivory Towers ...to milk ...at the expense of our national survival and the future of the planet. WE didn't learn from Apollo and we are in danger of making the same error. The lesson of Apollo, according to Neil Armstrong in his address to Congress, was that Apollo as a goal had too much emphasis on pure science and exploration, and not balanced with the tangible needs of society. Hence the short term support. Long term support, which is CRUCIAL requires clear, massive and easily justifiable tangible returns for society. Our /primary national science program/ should be oriented around our greatest national needs and problems. Such as global warming and energy etc. Not some fancy safari for the rich and famous. We used to have such a goal, remember ssto? Remember space ports? Remember space solar power? Bush killed /it all/ for a military oriented goal. A small base on the moon for our missile defense sensors. Instead of building the true infrastructure we need to exploit space, single state to orbit space ports ect, we building another one-shot deal. Instead of solving global threats like climate change and energy shortages, we spend all our dough kicking around some moon rocks and drilling little holes for bacteria. If we do that, we deserve what we likely to get from Nature. Another hundred thousand year long ice age that kills off just about all life on earth. Cheers! Jonathan s -- http://OnToMars.org For discussions about Mars and Mars colonization |
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On Apr 12, 10:51*pm, Pat Flannery wrote:
Jorge R. Frank wrote: The moon has one enormous advantage: three day return trajectory from Earth. That means you can learn long-duration planetary surface operations on the moon without it killing you like on Mars. You get a major leak in your spacesuit and either place will be just as fatal inside of ten minutes. You seem to be suggesting that the majority of the major health problems encountered will be serious enough to demand evacuation to Earth, but not serious enough to kill you inside of three days. Mechanical problems, not health problems. Long term presence on the Moon - or travel to and from Mars - will require fairly closed loops for life support. These systems are historically complex and unreliable. When your water recycling system breaks down on the moon, you can make it back with not much more than some lithium hydroxide canisters for CO2 removal and some form of humidity control and thermal control. When your water recycling system breaks down on Mars, you die. -jake |
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David Spain wrote:
Jorge R. Frank wrote: Are you off your meds, David? First you question the science utility of a human return to the moon, where humans can actually explore the surface to a level of detail that no robot could possibly match, That is true. And that appeals to Dr. Schmidt and... ? Many. Dr. Paul Spudis, for one: http://blogs.airspacemag.com/moon/ There are others. Just because you are ignorant of their existence does not mean they do not exist. then you post this nonsense about sending humans past Venus just so you could Actually to orbit Venus for a few months, dropping probes, placing satellites in orbit around it, maybe doing atmospheric sample returns, etc. A Venus orbital exploration mission would be a great warm-up for a Mars mission. As you said small steps. We could do all that with a traveling space habitat. Try to do that with Constellation. There is still no need to send people. Everything you list could be done more cheaply without them. That will always be the case for Venus, because it is impractical for humans to explore its surface directly. It is not the case for the surfaces of the moon and Mars, where not only can humans explore more effectively than robots, but more *cost*-effectively as well. Venus has an atmosphere that has "global warming" run amok. There might be some useful science to be done there with Earth application.[/quote] However, no science that requires people. The moon offers us... ? Lots. Dr. Spudis explains it more eloquently than I could; I suggest you look over some of the past articles in his blog. But putting all that aside, my actual point is a space habitat could travel. I don't see why we need to jump down the gravity well of the moon just to establish how to do long endurance space living. The ISS is a start. But then it looks to me like from a policy perspective I don't know what the plan is after shuttle. A few Orion visits? Then what? At least six years, probably ten or more, of ISS operations after shuttle retirement. A space habitat could be built in LEO, travel out to the moon or elsewhere and then return to LEO, where it would remain accessible even after a US moon program is abandoned. We could park it near the ISS. In fact the ISS would serve as a good construction site for the traveling habitat. Nope. As someone with over 15 years experience working ISS, I can tell you it's a ****ty site for construction. All the features of SSF that would have enabled large-scale in-space construction were gone by the time it morphed into ISS. |
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"Jorge R. Frank" writes:
David Spain wrote: Jorge R. Frank wrote: Are you off your meds, David? First you question the science utility of a human return to the moon, where humans can actually explore the surface to a level of detail that no robot could possibly match, That is true. And that appeals to Dr. Schmidt and... ? Many. Dr. Paul Spudis, for one: http://blogs.airspacemag.com/moon/ There are others. Just because you are ignorant of their existence does not mean they do not exist. Agreed. And I can line up several experts that claim a return to the moon is a waste of time and money. The fact that you choose to ignore them does not mean they do not exist. http://planetary.org/programs/projec...y/roadmap.html http://planetary.org/special/vision/results.html http://www.popularmechanics.com/scie...html?series=35 http://www.spaceflightnow.com/news/n0801/18avweek/ then you post this nonsense about sending humans past Venus just so you could Actually to orbit Venus for a few months, dropping probes, placing satellites in orbit around it, maybe doing atmospheric sample returns, etc. A Venus orbital exploration mission would be a great warm-up for a Mars mission. As you said small steps. We could do all that with a traveling space habitat. Try to do that with Constellation. There is still no need to send people. Everything you list could be done more cheaply without them. There is no need to send people to the moon either. Tele-robotics will work just fine on the Moon, unlike the planets, because the round trip communication delay is on the order of 2 seconds. People can work around that very effectively. A 20 min to 2 hour delay makes that impossible for planetary exploration via tele-robotics. You have to rely on some amount of AI in your probe programming. And that is not easy. And tele-robotic exploration will be far far cheaper than a moonbase. In fact after the political will to stay on the moon is gone, tele- robotics may be the only remaining viable option that will allow NASA to "afford" a long-term lunar exploration program. impractical for humans to explore its surface directly. It is not the case for the surfaces of the moon and Mars, where not only can humans explore more effectively than robots, but more *cost*-effectively as well. I disagree about the cost effectiveness for the moon given what could be done with tele-robtic explorers. But more to your point, sure if surface exploration is the end all and be all of exploration. But I disagree with that as well. Much can also be learned from orbit. Think about the ability to alter the experiment or create new ones based on the results obtained during observations. That is very hard to do with unmanned probes. I mean if we can't get to the surface should we not even *ever* attempt future manned missions to Jupiter or the outer planets someday? Venus has an atmosphere that has "global warming" run amok. There might be some useful science to be done there with Earth application.[/quote] However, no science that requires people. How do you know that definitively? Maybe if we had an orbiting laboratory the science would present itself? The moon offers us... ? Lots. Dr. Spudis explains it more eloquently than I could; I suggest you look over some of the past articles in his blog. OK. The page you pointed me to didn't really put much of a case forward for lunar exploration. It was more of a lament about the decline of the US aerospace industry (a lament I share), but I'll poke around a bit. But putting all that aside, my actual point is a space habitat could travel. I don't see why we need to jump down the gravity well of the moon just to establish how to do long endurance space living. The ISS is a start. But then it looks to me like from a policy perspective I don't know what the plan is after shuttle. A few Orion visits? Then what? At least six years, probably ten or more, of ISS operations after shuttle retirement. We'll see. Esp. if moon fever takes over NASA as I have a feeling it will. These things tend to snowball. A space habitat could be built in LEO, travel out to the moon or elsewhere and then return to LEO, where it would remain accessible even after a US moon program is abandoned. We could park it near the ISS. In fact the ISS would serve as a good construction site for the traveling habitat. Nope. As someone with over 15 years experience working ISS, I can tell you it's a ****ty site for construction. All the features of SSF that would have enabled large-scale in-space construction were gone by the time it morphed into ISS. OK, I'll defer to your expertise and accept that. And more's the pity. We should have downscaled SSF into something we (US) could have used more productively. And in-space construction is one of those functions we should not have sacrificed. All the more reason to get cracking on building useful space infrastructure in LEO now, rather than another one-off to the moon that the politicians will abandon when the polls tell them to. In the meantime we will have squandered another 25 years and more billions of dollars before getting back to building the kind of infrastructure that we really need. BTW Jorge, thanks for engaging me in this instead of succumbing to the temptation of writing me off as a crank. I'm the first to admit that space in not my profession nor my area of expertise. But I learn a bit every day and I highly value the input from those like yourself who are involved. Thank you. Dave |
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Pat Flannery writes:
David Spain wrote: Well, I'd suggest a landing technology similar to that used for the Mars Exploration Rovers would work well.... ;-) I never saw that movie, which was supposed to suck. Ever notice three odd things about "Robinson Crusoe On Mars"? 1.) They abandon the Eleanor M because it's decaying out of orbit... but somehow after they land it goes right on orbiting, with an perigee that appears to be around 2,000 feet. Maybe the Newtonian effect of jettisoning from the Eleanor M (along with the reduced mass) was enough to inject it into a higher, stable orbit. Or maybe one of the flaming meteor ball's gravitation pulled it into a stable orbit. We all know Mars orbit is filled with flaming meteor balls right? Gee, Pat the movie had to assume *some* level of knowledge on the part of the audience. ;-D 2.) At the end of the movie they are dying of thirst while walking around in a snowstorm. Unless that's CO2 snow they could just eat it. Or maybe they could have survived on filtered monkey ****! If only they'd used Friday's pills and that monkey more effectively! 3.) Christopher Draper never makes the slightest attempt to determine if the alien Friday might have a vagina rather than a penis. If "he" was actually sort of a "she" this could change the whole timbre of the movie. Don't knock this concept; if that had been Commander William Riker, that's the _first_ thing he would have checked. :-) Pat That surely would have cured him of dreaming about Batman! ;-) Dave |
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David Spain wrote:
I disagree about the cost effectiveness for the moon given what could be done with tele-robtic explorers. Which teleoperated rovers? The ones of 2050 or 2060? D. -- Touch-twice life. Eat. Drink. Laugh. http://derekl1963.livejournal.com/ -Resolved: To be more temperate in my postings. Oct 5th, 2004 JDL |
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