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Originally posted by ZeskoWhirligan
However, if your interest is "cheaper" space travel, the ULTIMATE technology is bacterial... Bacteria can traverse the most hostile interplanetary and interstellar space, riding in asteroids and comets. Self-replicating bacteria are, therefore, the most expedient means of spreading complex LIFE throughout the Universe.
There's no reason to waste time and resources transporting big, nasty, bulky humans or other primates from one star system to another. Life is Life, is it not? Send bacteria and allow it to do its job.
Our ultimate objective in this Universe is to launch LIFE away into the void without any hope of ever hearing an echo from it.
The most economic and efficient way to do that is to launch BACTERIA off into the vastness. Engineer the bacteria any way you wish; but DON'T try to send monkeys and humans and your MACHINES off into the void — sustained by trillions of dollars investment — because they'll never survive.
Hate to break it to you, but humanity and its primitive machines will NEVER reach far into the future. Our species and our technology is decidedly FINITE.
Bacteria, on the other hand, WILL reach billions of years into the future, with minimal investment in life support and technology.
edit on 4-1-2012 by ZeskoWhirligan because: (no reason given)
Originally posted by ZeskoWhirligan
In fact, there are creatures right here on Earth who are far more organized and technically accomplished than Humans.
A lowly spider, for instance, can single-handedly produce a silken compound from its abdomen that is 6 times stronger than steel, and use it to construct the proportionate equivalent of a 100-story building in just a few hours. That same spider can then chemically modify its versatile silk to trap live prey many times larger than itself. That same spider can then use its silk to manufacture para-sails and actually fly away on the breeze.
The spider has thus mastered chemistry, architecture, hunting and aeronautics, and done so WITHOUT Science or Math or any of the other tedious Human skills we associate with intelligence.
Now, imagine an alien "civilization" that functions the way spiders do...
These creatures might excel in chemistry and engineering and aeronautics and perhaps even space travel without EVER understanding the Periodic Table of the Elements or Organic Chemistry or Calculus or anything else that we associate with intelligence.
There are countless organisms on Earth alone that can spontaneously produce light from their own bodies. There are terrestrial organisms that can produce powerful (even lethal) electrical charges, for that matter. There are complex life forms on this planet that can survive with ice crystals in their bloodstreams.
What we do know is that all these millions of diverse life forms are NATURALLY capable of the most astonishing feats of survival without an inkling of an idea of Human Science.
What should this tell us?
It should tell us that the great majority of Life in the Universe is capable of the most amazing feats of survival and engineering without EVER understanding Human Logic, Human Math, and Human Science. Without a doubt, there are creatures out there in the vast depth of Space that DWARF Human technology into insignificance, and they do so NATURALLY, without any sort of Science whatsoever.
If we venture into space on a quest to locate near-human intelligence as our ultimate objective (as in Star Trek), we're going to be very, very horribly surprised.
Originally posted by MrInquisitive
To claim that spiders have mastered chemistry and other fields better than humans is hyperbole. Through evolution, including random chemical reactions, spider species have indeed developed abilities human haven't yet attained; however, I don't see arachnids intentionally expanding their technology or biologically improving themselves to emulate other creatures' capabilities. And I'll bet you any amount of money that humans will have developed a technical mastery of spinning spider silk before spiders develop apposable thumbs.
Originally posted by MrInquisitive
And back to your bacteria-spreading Pan Spermia for just a second: Given that it's taken life 3+ billion years to develop to its present state on earth, and this amount of time is about 1/5th the apparent age of the universe, it seems that spreading life through the cosmos in the form of bacteria or even viruses would be a very slow and inefficient way to do so, even on a cosmological scale. Sure, it would take less energy and technology than transporting primates or what have you, but the pay off would be very low.
Originally posted by ZeskoWhirligan
Originally posted by MrInquisitive
To claim that spiders have mastered chemistry and other fields better than humans is hyperbole. Through evolution, including random chemical reactions, spider species have indeed developed abilities human haven't yet attained; however, I don't see arachnids intentionally expanding their technology or biologically improving themselves to emulate other creatures' capabilities. And I'll bet you any amount of money that humans will have developed a technical mastery of spinning spider silk before spiders develop apposable thumbs.
You do understand what I'm saying, don't you?
Just because WE Humans are highly adaptable doesn't mean that another intelligent life form MUST necessarily meet our adaptive expectations. Other intelligent life forms might, indeed, SPECIALIZE in such a way as to develop very highly advanced propulsion and other engineering systems, but they might be able to do so through instinct alone, with no adaptive behavior, with no math or science. As do spiders.
Originally posted by MrInquisitive
I guess I didn't quite understand that what you were saying. Apparently you're suggesting that some lifeforms, through natural selection, may have developed propulsion systems/means to travel across space, as well as the capacity to live in deep space during the transit. And I would have thought that they would first develop capacities to successfully live in their environment on their world...
For some species to adaptively mutate to be able to attain escape velocity from its mother planet and to withstand the environmental rigors of space (near absolute zero temperature, radiation, near-complete vacuum and no food for possibly thousands or millions of year) seems highly unlikely. I acknowledge there are plenty of things under heaven and Earth than aren't dreamt of in either my or Horatio's philosophies, but I'd say this supposition of yours is most infeasible to say the least, and that the OP's suggestion of machine intelligence being the likely culprit if we indeed have had or will have ET visitations is a much more likely possibility.
Originally posted by ZeskoWhirligan
Pardon, but there IS NO DATA to support a discussion of "extraterrestrial machine intelligence"... It's pure bunk, pure nonsense.
Originally posted by TeaAndStrumpets
This is just a friendly discussion about *possibilities* the way I read it. So relax, okay? ;-) You have some interesting thoughts, and I've enjoyed this thread when it's been able to stay on-topic.
Originally posted by TeaAndStrumpets
If you're suggesting that there's solid evidence of panspermia, then quite a few people would love to see that evidence! And if you're relying on the Mars meteorite (ALH84001) and NASA's mid-1990's claims for that... well, to say that those claims are highly disputed is to put it very kindly.
Originally posted by ZeskoWhirligan
You should know that bacterial life forms DO have the capacity to survive for YEARS in the absence of air, water and nutrition, as well as in zero-gravity, in the impossible cold of Space, and under the harshest bombardment of radiation, and that NASA has quietly acknowledged this FACT for nearly 50 years...
NASA: Earth Microbes on the Moon
NASA doesn't deny that bacteria are entirely capable of surviving environments that humans and machines cannot survive; but they don't popularize the fact, either.
The reason for this is obvious — our space programs, at present, are entirely politically-driven. You can't garner public support for a million-year mission, okay? We must appeal for support of missions that can be accomplished quickly, well within the lifespan of the average human being — which, as it happens, is an impossible prerequisite for deep space exploration, both for humans and machines.
The most intelligent form of deep space colonization is to genetically program bacteria, insert them into inert chunks of rock, and hurl these stones out into the void, allowing them to fall where they may. Which would cost, what? A billionth of the cost of your average manned mission? A millionth of the cost of your average space probe?
I suggest that this is precisely how Life is disseminated throughout the Universe, except that Nature takes care of the interstellar propulsion by means of asteroid impact, which not only delivers new bacteria to the surface of far-flung worlds, but also launches bacteria from these planets' surfaces into Space.
We already have samples of fossilized bacteria from Mars right here on Earth, but humans have never set foot on Mars — the Mars bacterial specimens we possess were dislodged by asteroid impact from the Martian surface millions of years ago and drifted through Space to land on Earth about 13,000 years ago.
...
Even NASA acknowledges that bacteria can survive the rigors of the most hostile Space environment for years at a time. We should also acknowledge that, if Life can survive in a frozen vacuum under harsh radioactive bombardment for years at a time, there is a possibility that SOME Life may THRIVE in a vacuum, in zero-gravity, WITHOUT air or water or food, and that it may even EVOLVE into higher species under those conditions.
I'm saying that, yes, there may indeed be Life forms that LIVE in the Void, in the impossibly hostile vacuum of Space. There may even be highly evolved and technically advanced life forms that avoid the little islands of rock and gas and Gravity that we call planets.
Originally posted by MrInquisitive
Also, flinging microbe-laden rocks off a planet relies a lot on random factors: how could they be flung just to the right solar system, and then get to just the right planet or planetoid in said system?
Originally posted by ManInAsia
Just for the record, it was plants that are supposed to have created so much oxygen which initially killed a lot of the existing anerobic life on Earth but later allowed other bigger and more complex multicellular organisms to exist with the oxygen boost now available for respiration.
Originally posted by ManInAsia
I see you just completely ignored my point which was there is no single bacteria suitable for your Creator bacteria and also that what is toxic for one species is perfect for another. Humans don't do well in space now but with future technology it is possible for humans to conduct long term space travel.