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Rebuttal #1
Originally posted by Skyfloating
Chissler, my esteemed opponent, smugly rests in the antiquated space-travel concept of the 19th Century (which lasted until up to around the sci-fi movies of the 1950s).
Originally posted by Skyfloating
This debate is basically horse-carriages vs. jets.
Originally posted by Skyfloating
So, no...the idea of slower-than-light interstellar travel is no good because there are much better options already being considered.
Generation Ships
Suspended Animation
Originally posted by Skyfloating
What may come as a surprise to my opponent is that I am all for interstellar travel and exploring the many new worlds out there and I firmly believe we will do that for the very reasons my debate opponent kindly showed in his opening post.
Socratic Approach
Rebuttal #2
Originally posted by Skyfloating
My opponent starts out by painting a picture of doom and gloom, saying we will have to leave our planet very soon.
Originally posted by Skyfloating
What my opponent tries to play down is that this project was designed as an unmanned probe mission...something one might easily overlook if reading too quickly.
Originally posted by Skyfloating
In this article my suggestions surrounding wormholes, teleportation (stargates) and lightspeed travel are listed along with the options my opponent names...as options scientists are taking seriously as a reality, not as fiction.
Answers to Questions
Extended Human Lifespan
Geoffery A. Landis, of NASA's Glenn Research Center, says that a laser-powered interstellar sail ship could possibly be launched within 50 years, utilizing new methods of space travel. "I think that ultimately we're going to do it, it's just a question of when and who," Landis said in an interview. Rockets are too slow to send humans on interstellar missions. Instead, he envisions interstellar craft with gigantic sails, propelled by laser light to about one tenth the speed of light. It would take such a ship about 43 years to reach Alpha Centauri, if it passed through the system. Slowing down to stop at Alpha Centauri could increase the trip to 100 years.
Socratic Approach
Source: Yoji Kondo: Interstellar Travel and Multi-generation Spaceships, p. 31
It has been argued, that unless an interstellar mission can be completed in less than 50 years, it probably should not be started at all. Instead, the money should be invested in designing a better propulsion system. This is because a slow spacecraft would probably be passed by another mission sent later with more advanced propulsion.
Source
As there is currently no known technology that allows for long-term suspended animation of humans, the term is usually only found in science fiction.
Source
The main difficulty of interstellar travel is the vast distances that have to be covered and therefore the time it takes with most realistic propulsion methods - from decades to millennia. Hence an interstellar ship would be much more severely exposed to the hazards found in interplanetary travel, including hard vacuum, radiation, weightlessness, and micrometeoroids. The long travel times make it difficult to design manned missions, and make economic justification of any interstellar mission nearly impossible, since benefits that do not become available for decades or longer have a present value close to zero.
Insert a Pseudo-Witty Title Here...
Originally posted by Skyfloating
By the time those slowpokes finally reach their destination, we will have invented something better.
Terraforming... ?
The terraforming (literally, "Earth-shaping") of a planet, moon, or other body is the hypothetical process of deliberately modifying its atmosphere, temperature, surface topography or ecology to be similar to those of Earth in order to make it habitable by humans.
Humans currently do not possess the technological or economic means to terraform another planet or moon.
The initial cost of such projects as planetary terraforming would be gigantic, and the infrastructure of such an enterprise would have to be built from scratch. Such technology is not yet developed, let alone financially feasible
It is possible that over geological timescales—tens or hundreds of millions of years—Mars could lose its water and atmosphere again, possibly to the same processes that reduced it to its current state.
Socratic Approach
A generation ship is a hypothetical starship that travels across great distances between stars at a speed much slower than that of light
Paraterraforming
Also known as the "worldhouse" concept, or domes in smaller versions, paraterraforming involves the construction of a habitable enclosure on a planet which eventually grows to encompass most of the planet's usable area. The enclosure would consist of a transparent roof held one or more kilometers above the surface, pressurized with a breathable atmosphere, and anchored with tension towers and cables at regular intervals. Proponents claim worldhouses can be constructed with technology known since the 1960s.
It has been fun!
Socratic Approach
In Conclusion
This one was almost impossible to judge. Talk about a legendary battle. The defining questions seem to be as follows:
Do we have time to wait for more advanced technologies to come around (if they ever will), or do we need to get off this rock sooner rather than later?
Skyfloating should have taken this point more seriously. I was convinced by Chissler that we may have to get off of this planet within the next 50-100 years, and that defeats the fact that warp drive or worm holes might manage to outrun a generation ship on its way.
Is mars really quicker and easier, and would that address the concerns that drive us to interstellar travel?
But what about Mars. Skyfloating's tactics on this issue were really good, and Chissler missed a trick there that allowed that point to stand. Antartica isn't a great example since it doesn't have to produce its own atmosphere or shield itself against radiation or many of the other concerns that skyfloating himself raised against generational ships. Alas that was Chissler's argument to make, not mine.
Mars definately gets around the eco problems that Chissler raised. If Chissler had suggested something more along the lines of Firefly- a human civil war in which one system just wasn't big enough for two sides, that might have been another story.
Neither side really deserves to lose- both sides have ideas that should be pursued and make points that might prove accurate as history unfolds, yet there can be only one.
I've got to give it to skyfloating, just by a hair, because the mars alternative does hold at least as much water as a generational ship
Originally posted by The Vagabond
I've got to give it to skyfloating, just by a hair, because the mars alternative does hold at least as much water as a generational ship