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Amazingly, the more the discussion, the closer we seem to be approaching Arthur C. Clark's system in his novel "Prelude to Space"! Anyone remember that one? It's still a good read.
I'm in favour of water-ice-use as much as possible in interplanetary spacecraft, to the extent of being actually surrounded by a "cake of ice," as the solution to many of the problems arising in connection with human transportion in space. I'm assuming, according to latest estimates, there'll be plenty of (admittedly dirty) cometary ice to be found for this purpose, orbiting inside or crossing Earth's orbit.
Orionblad: I must say, you've covered any further questions I could have imagined regarding nitrogen in the atmosphere for the needs of the Mars settlers. This society has such a great bunch of members, as far as obtaining needed information is concerned. The simpler (dumber?) it seems that my questions are, the more interesting and complete the answers you post in response.... I wonder if my question were: "Duh, anyone?" what might be the response? (The mind boggles.)
Tunneling to reside under the ice, as well as "consuming" the melt-water, as I seem to remember was (still is?) done in Anarctica, would also shield first arrivals from ultraviolet, etc. radiation. Your suggestion is a bit different from my initial idea, of "tenting" over narrow canyon tributaries--admittedly a strategy for second or third arrivals. Good thinking!
Hello, Cobra Commander? Planets will be hard to find, certainly none which can be "tailored" to human ecological needs and desires. Space habitats can do the same, given your motivations.
Looking back, Cindy...the '30s wern't all that bad, either. Buck Rogers and Flash Gordon were visiting places like Mars regularly in the funny papers, back then. We thought of the year 2000 as the distant future, where everyone wore funny, "futuristic" clothes, and we still didn't have a clue how a helicopter would fly and sound in the air. The autogyro was the form of aerial "flivver" in our future. Amelia Earhart flew one across the U.S. and nearly back, before damaging it during landing. AM-Radio was interesting to listen to, while driving long distances, when 50 miles per hour was as fast as you dared on the two-lane highways. Three-lanes were being tried, with only solid lines, which made passing exciting when I was learning to drive. Go out and rent a video of the Clarke Gable film, "It Happened One Night," to see what it was like in 1935...get me, babe?.
A word of caution: If you substitute the name "Saddam Hussain" for "Iraq" in those of the above Posts that recommend some form of nuclear attack to eliminate him from the picture...don't they sound foolish?
It's only one man...not the (mostly captive) population of Iraq you want to eliminate! Once he's gone, you can bet he will have left no one capable of taking his place.
Ditto, Hitler (in hindsight) because either of them could have been eliminated, or sent into exile, without destroying populations. The regimes they set up to protect their asses, tend to whither away without them to inspire and/or terrorize in order to stay in power.
How you ensure how/where/when you've got the real Saddam, requires spying and covert intelligence inside Iraq-- James Bond type stuff--tweezers instead of a club, in other words.
Either that, or induce Saddam et al to abdicate into luxurious exile, like others of his ilk, who are presently living out their lives at the expense of the countries they ruined.
What, you say? Let him get away with it? Well, he's just like any other crook who's been allowed to become too big and threatening to arrest and put in jail. Kim, of North Korea, is another of these. You have to make it worth their while to leave, or they'll take their entire nation down with them. That's what happened with Hitler. That's my opinion, anyway.
I thank you for your kind attention.
All species, even this magical, awesome, race of immortals, will still wish to know where they came from (unless they've managed to contact God or something).
Since there are no detectable "others," how about: This magical, awesome, race of humans, will ... wish to know where they came from ... (We ARE pretty awesome, you know.) Time to pull up our collective socks and get on with it, because for the forseeable future, we're all we've got!
Two queries:
(1) I have never understood the importance of nitrogen gas to breath. Something to do with partial pressures...?
(2) Pressure suits, in which "pressure" applied to the body by means of elastic characteristics of the suit material itself (mentioned from time-to-time in other forums) are not suggested for solving the above-mentioned pressure conundrums--where the atmospheric pressure needs of plants conflict with those of the human horticulturists. Why not...?
Gee, I'm disappointed no one has taken me up on the Andes sled-boosting scheme. My motive, as always, was to suggest a scheme possible to accomplish within my own lifetime, since I'm not all that young....
Soph! But first, we need to be able to live routinely off-Earth, and the first step is to learn how to do this...through the use of the ISS. Why is that so hard to accept? Without the ISS, getting to Mars from Earth (motivated how, I wonder?) would be just another Apollo-like, Mars-or-bust exercise which, due to lessons yet unlearned in LEO, would most likely end in tragedy. The repercussions, at this fragile stage of the ISS program, if the U.S. were to let it go by default, would kill any chance for a meaningful Mars Program in my opinion. There's more to this scenario (e.g. possibility of "foreign" takeover) but I've got to quit and get some sleep. Nice chatting with you.
An orbiting, accessible space platform is needed by us in order to learn how to live and work indefinitely in good health and (in the long run) happiness apart from Mother Earth, in order to survive as a species. That Earth-ecology will have to be adapted is a "given," but that will require living space and duration of controlled conditions.
Since living and learning how to accomplish this in low Earth orbit is all we are presently capable of--by default (having foolishly squandered Mir and Spacelab)--the ISS represents this generation's only remaining opportunity make this all-essential first step away from Earth. This should make Mars Society adherents very thoughtful....
To paraphrase what my realitor-nephew keeps on about the three ways property values are determined (location, location, location)...there only three ways to solve the "population crisis" on Earth: Education...Education...Education!
Soph and Josh Cryer! You both seem so retrograde, and I might add--futile. Why not contribute something new and positive to this forum that we older types, to whom your old fashioned and stereotypical arguments are gone and hopefully forgotten, can contribute...please, for gosh sakes?
Soph, you've started something. But, in all of the above responses, there doesn't seem to be a reuseable scheme suggested so far, to boost the proposed spacecraft out of the atmosphere!
I glanced at my World Atlas just now at Peru, at the foot of the Andes. They appear to go abruptly up from the desert along the Pacific coast, to five and six thousand metres. I would love to start some discussion as to the practicality of building a maglev booster-sled track up the slopes of that mountain chain.
The spacecraft would ride a retrievable sled to the top, separating from it at Mach 0.9 (say) at some steep angle of ascent, to further accelerate out of the atmosphere by whatever propulsion means the client space agency has adopted for their particular spacecraft.
Upon separation, the sled would continue in a trajectory out over the Atlantic Ocean, using airbrakes, and then by deploying a Ragallo-type flexible wing to perform a remotly piloted soft flying letdown to a designated retrieval location in the ocean. The sled would then be returned by ship, via the Panama Canal, to the lanch facility.
The launch facility (nationally and/or internationally owned and operated) would be expanded rather than rebuilt, by adding parallel tracks up the slopes of the Andes, to handle increasingly heavy spacecraft as future needs develop.
By all means...and I'm with Soph, in believing that any major space research event will have bearing on the ultimate attainment of Mars. But in addition, besides reproducing bulletins of the events, how about some comment as to how it might contribute to Mars, if not absolutely obvious.
Personally, I think it's quite fantastic how much we humans are already aware of the universe, considering the short time we have existed on Earth. So what, if we're nasty at times to one another, cooped-up together as we are.
We needed to be nasty to get this far...and tough...and mean...to survive. The same goes of successfully spreading off-Earth. Ignorance and superstition is what we should be afraid will overcome what knowledge and education makes us capable of.
Feeling ashamed of belonging to the only intelligent life in the known universe is foolishness. But...that we can have such feelings at all, says a great deal about our potential for continued improvement.
So forget about any help from "out there" by anyone superior to us--we're all we've got. Let's get the heck off the planet, those of us who already know how to go about it, while educating those of us who are to follow!
I thank you (no applause, please).
Soph--I really think this deserves more than a "...if Saddam thinks..." response! The difference in world consequences, involving masses of humanity hinging on a point of honour, I feel should be openly publicized.
Here is a tasteless and non-politically-acceptable point regarding the postulated war between a Consortium and Iraq that I have yet to see addressed, namely:
What if the Consortium were to invade Iraq on the ground? In view of Iraq's assurances that they have no hidden bacterial or chemical weapons...rather than admit they lied to the U.N., wouldn't this prevent their use of such weapons on the invading ground-troops, even if they actually clandestinely possess these weapons?
I like a couple of ideas:
1) RBCC, i was told about this by mark s, this sounds like a very good idea.
2) an NTR SSTO. they can be made clean, and have a far greater mass ratio. they dont need as much fuel, and the fact that they can carry much more mass per total mass means better safety possibilities, including the heat shield.
3) the elevator. yes, its a decade or two away, but it is the ultimate SSTO in terms of cargo. we will always need a launch SSTO for crew and long distance passenger flights, etc.
4) OSP must be pushed!
The elevator's a lifetime away--get real, and concentrate on what we can do in my lifetime, eh?
Hi all,
In the event that the ISS costs really to much for the returned benefits, even in the future, and could be replaced by a MIR-like automatic station, is that possible to add a propulsif nuclear reactor to the ISS and relocate the ISS to a Mars orbit ? or just to transform the ISS in a space ship ?
The ISS orbiting Mars ! that would be great. I am talking in the far future of course, like in 40/50 years. That would still be better than to burn the ISS in the atmosphere like for MIR.
Until further notice, the Russian Soyuz space transportation system is ready and able, I'm convinced, to service the ISS in its present half-built stage of development. I could go on...but it's a bit too soon after the catastrophe.
I'd better reply so you'll know you've been read and appreciated for bringing this to our attention. Thanks heaps. Comments after I follow-up....
Okay, this is what I turned up:
Friday, January 17, 2003
According to the LA Times, President Bush is going to ramp up funding for nuclear rockets
with possibly a State of the Union boost.
The Bush administration has signed off on the ambitious nuclear-rocket project -- though
not specifically for the Mars landing -- and the president may officially launch the initiative
during his State of the Union address on Jan. 28, NASA Administrator Sean O'Keefe said in
an interview with The Times. The project, dubbed Project Prometheus, would greatly
expand the nuclear propulsion plans that NASA quietly announced last year when it said it
may spend $1 billion over the next five years to design a nuclear rocket. NASA and the
Bush administration are keeping the lid on the details, including how much more the
agency expects to request from Congress, but O'Keefe said the funding increase will be
"very significant."
[Meanwhile, the first Chinese astronaut will travel to space this October.]
I'd better reply so you'll know you've been read and appreciated for bringing this to our attention. Thanks heaps. Comments after I follow-up....
Resources is part of cost. Cost doesnt necessarily mean money-so my initial statements are still quite valid.
But for an established colony, where children and families are involved, yes, risk must be kept to a minimum, but it will always be there. Thats what the frontier is all about. Families and children came to the New World, and encountered risks at every turn.
With things like the internet and e-mail (future upgrades) the frontier won't be so isolated. Add saunas here and there for communal get-togethers (and a place to wash and dry your laundry), and jogging, and flying self-powered ultralight aircraft inside the domes and roofed-over canyon tributaries...why, lead me to it!
Why anyone with any amount of sense, with knowledge beforehand, would even want to "try" anything that might degrade their ability to function physically and mentally, is more than I can understand. But, criminalization by the establishment, of habit-forming (whatever) without providing humane ways and means of kicking a victimizing habit, is worse than criminal! Drug addiction education similar to up-to-date hygene courses in schools should be available to all, myself included, to avoid getting started out of sheer ignorance. (I thank you...next?)