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Sci-Fi Space Science

Does Active SETI Put Earth in Danger? 647

Ponca City, We Love You writes "There is an interesting story in Seed Magazine on active SETI — sending out signals to try to contact other civilizations in nearby star systems. Alexander Zaitsev, Chief Scientist at the Russian Academy of Sciences' Institute of Radio Engineering and Electronics, has access to one of the most powerful radio transmitters on Earth and has already sent several messages to nearby, sun-like stars. But some scientists think that Zaitsev is not only acting out of turn by independently speaking for everyone on the entire planet but believe there are possible dangers we may unleash by announcing ourselves to the unknown darkness. This ground has been explored before in countless works of science fiction most notably "The Killing Star," a 1995 novel that paints a frightening picture of interstellar civilizations exterminating their neighbors with relativistic bombardments, not from malice, but simply because it is the most logical action."
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Does Active SETI Put Earth in Danger?

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  • by Anonymous Coward on Thursday December 13, 2007 @04:59PM (#21688088)
    Has this man figured out a way to send signals faster than radio frequency or light? Surely, evidence of our noisy bickering between each other will be interpreted long before his signals anyways. And what about the satellites we have cruising away from our solar system?

    I don't think what Active SETI does is really going to matter at this point in time.
  • It's too late (Score:5, Insightful)

    by KillerCow ( 213458 ) on Thursday December 13, 2007 @05:01PM (#21688108)
    If you read the second link

    ...the television broadcasts we have so rashly been transmitting to the stars for the last 50 years..


    Stopping people from deliberately sending signals is not going to make us invisible. We've been sending signals for decades.
  • by Frosty Piss ( 770223 ) on Thursday December 13, 2007 @05:07PM (#21688218)

    But some scientists think that Zaitsev is not only acting out of turn by independently speaking for everyone on the entire planet but believe there are possible dangers we may unleash by announcing ourselves to the unknown darkness.
    "Speaking for everyone"? He has a radio, and he's using it. This is speaking for everyone? When I toss a message in a bottle of the deck of a fraighter in the middle of the Pacific and it washes up on some tropical shore, I'm speaking for "everyone"?

    This idea is a stretch. Zaitsev is more or less free to "speak" to anyone he chooses.

  • hypocrisy (Score:1, Insightful)

    by Anonymous Coward on Thursday December 13, 2007 @05:09PM (#21688258)
    So we're constantly listening to the sky for others to do this to us - but we're unwilling to do it ourselves. But it's the aliens that want to conquer the universe, right?
  • by Free_Meson ( 706323 ) on Thursday December 13, 2007 @05:09PM (#21688264)

    What are the chances of finding another intelligent species?
    Given enough time, approximately 100%.
    The impending heat death of the universe may prevent us from having enough time, however.
  • by domatic ( 1128127 ) on Thursday December 13, 2007 @05:12PM (#21688314)
    Absence of evidence isn't evidence of absence. I agree with you that we have no evidence of other intelligent life and that anything we say about other intelligence in the universe is pure speculation. What you haven't done is demonstrate "nonexistence" which the reference to Fermi's paradox doesn't do.
  • by Anonymous Coward on Thursday December 13, 2007 @05:15PM (#21688408)
    Are you saying that if you were walking through the wilds, you wouldn't notice smoke signals or hear war drums?
  • by Anonymous Coward on Thursday December 13, 2007 @05:20PM (#21688500)
    There is 0 evidence that there is anything out there to fear.
    There is 0 evidence that there is anything out there that cares.
    There is 0 evidence that there is anything out there that could do anything about it eve if it cared.

    But that isn't a reason why we can't be afraid.

    And all of you who want to say "yeah but you can't PROVE that it is safe" kindly prove that the aliens we contact won't save us from a mother asteroid or some other extinction event.

    You may all return to fearing each other now.
  • No. (Score:5, Insightful)

    by Orange Crush ( 934731 ) * on Thursday December 13, 2007 @05:25PM (#21688582)

    Space is very big and it takes lots and lots of energy and resources to build a craft--even just a weapons delivery system--to cross the vast distances between stars. It would have to actually be worth it to attack us. Our planet and Solar System contain no resources that aren't readily available and easier to obtain much closer to just about any other star system.

  • by DrYak ( 748999 ) on Thursday December 13, 2007 @05:27PM (#21688610) Homepage

    The Enemy is Us


    Which probably could explain why aliens might be more pacific than us.

    What I'm basically saying, is that "peace" is a prerequisite for achieving "space age",
    because "space age" comes only far later after "big weapons" in the technological development,
    and without "peace", a civilisation may blow it's entire planet at the "big weapons" stage, long before being able to achieve "space age".

    Just look at our history :
    As you said, our own worst enemy has always been ourself : the other humans against which we engage war.

    Specially in recent history, we've reached the point where some population have enough warfar technology and power that they might oblitared the whole planet if weapon escalation runs out of control.
    Nuclear stockpiling and M.A.D. programs are the epitome of this situation.
    MAD fundamental premise is that nobody will attack because everyone dies in the process of retaliation that follows (except maybe a bunch of politician hiding into caves with lots of young pretty nubile girls, isn't it, Dr Strangelove ?)
    MAD seeks to make atomic war an unaffordable option because of too high cost.
    The implicit consequence is that if someone played fool anyway, we WILL all definitely stop existing.

    And at the same time, we haven't even reached true space travel yet, and we're very far from being able to do it on a large scale. We can only plant a couple of flags on our moon, and send two motorized webcams to the directly neighbouring planet.

    An alien race that is able to detect us AND come toward earth to meet us, must necessarily be extremely advance, far beyond the point at which we are now. Which would possibly mean also having gone through a long story of dangerous technology (military and such).
    If that alien race wasn't deeply motivated to be peaceful, they'll have had a lot of opportunity of blowing themselves up with all discovery they had the time to make before achieving space exploration.
    Only a race that repress its tendency to kill everything can survive technology.

    Even we as human have a small tendency to try to refrain of causing too much destruction.
    In antiquity, pillaging and burning down to grounds enemy cities has been standard military practice, even told in classical literature.
    In the middle ages, having a lot of deaths during wars was considered pretty normal.
    As history progressed more dangerous technology has become available, people start being reluctant using it. Moral value change.
    MAD was a pissing context without (hopefully) any real intent to engage all those nukes.
    Even if atrocities are comited during modern conflict, those are much more criticized by the public (see current opinion about Irak or the various massacres and ethnic cleansing happening under dictatorship).
    Slowly we are discovering that hurting each other may not be the best procedure.

    A lot of the "modern" forms of conflict have moved to much more political and commercial ground. Emerging country don't long anymore to conquest foreign land, only to capture their markets.

    Thus maybe, we ourselves will be able to survive until space age without blowing ourselves up with all military technology we may invent in the process.

    But probably, the first alien race that will meet us will probably be peaceful because other wise, by then, they won't exist anymore.
  • Unlikely (Score:2, Insightful)

    by Bones3D_mac ( 324952 ) on Thursday December 13, 2007 @05:28PM (#21688622)
    The earth is such a mass flood of electromagnetic signals with repetitive / predictable patterns that, even without SETI, we'd be like a halogen bulb in a dark room to them.
  • by _Sharp'r_ ( 649297 ) <sharper@@@booksunderreview...com> on Thursday December 13, 2007 @05:35PM (#21688720) Homepage Journal

    Only a race that repress its tendency to kill everything can survive technology.

    Here, let me fix that for you:

    Only a race that repress its tendency to kill itself can survive technology.

    What eliminates a race that focuses all of its agression against others not of their race? It makes a great external enemy that allows the race itself to work together with a common bond, at peace with itself.

    It's just too bad that we turn out to be one of those "others", huh?

    Oppresive regimes to this all the time on earth, using an "external" enemy to create peace at home in furtherance of opposing the "greater enemy".
  • by Toonol ( 1057698 ) on Thursday December 13, 2007 @05:46PM (#21688928)
    Every technological advancement that we have ever seen has been created by a warlike species. If you want to extrapolate from a sample of one, space-faring aliens to be just as warlike.
  • by sumdumass ( 711423 ) on Thursday December 13, 2007 @05:50PM (#21689002) Journal
    Just exactly what would you need for proof that we were contacted by extra terrestrial beings?

    Proof? I would say that there is an extreme likelihood that a good bit of popular pasts have included alien visitors. Seriously, what would put the fear of god into someone more then an alien "angel"? Or how about Zeus and Apollo and so on. The Chinese fascination with dragons and all could be a sign of visitors. Not that I think dragons are aliens but they can resemble some popular space crafts that the nutjobs claim to have seen.

    I think it would be extremely hard to verify that no extra terrestrial life has visited earth. I think you mean that it isn't probable because they left no trace that you can recognize.
  • by lgw ( 121541 ) on Thursday December 13, 2007 @05:51PM (#21689030) Journal
    The thing is, we haven't really looked. There are no blatantly obvious signs - no cities on Mars or the like, but that's all we can really say. Other than the Earth, the Moon, and Mars, there could be a great many alien artifacts scattered around the Solar System: we wouldn't know unless they were highly visible. We really haven't explored much.

    Similary, we know that nearby stars aren't sending out radio signals directed at us. That doesn't tell us much at all. The galaxy is a big place, and we don't know what to look for as evidence of a high tech civilization.

    This is the most obvious answer to Fermi's paradox: we're wondering why no one lives in the house next door, but we've never actually walked over and rang the doorbell.
  • A new appetizer (Score:2, Insightful)

    by Phoinix ( 666047 ) on Thursday December 13, 2007 @05:52PM (#21689052)
    As once Dr. Hawking http://en.wikipedia.org/wiki/Stephen_Hawking [wikipedia.org] once said: "Meeting a more advanced civilization, at our present stage, might be a bit like the original inhabitants of America meeting Columbus. I don't think they were better off for it."
    http://www.hawking.org.uk/lectures/life.html [hawking.org.uk]

    We may be their new appetizer. I hope that this "Alexander Zaitsev" guy would be first on their menu...
  • by cbart387 ( 1192883 ) on Thursday December 13, 2007 @05:57PM (#21689144)
    This topic (to me) is equivalent to worrying about occasionally drinking beer when I'm shooting up heroin. First, heroin is much worse, and secondly, an occasional beer is not going to likely have that much of an effect. Worrying about SETI seems, to me, like beer. There's so much other stuff we, as humans, are doing that is more of an immediate threat.
  • by Just Some Guy ( 3352 ) <kirk+slashdot@strauser.com> on Thursday December 13, 2007 @05:57PM (#21689162) Homepage Journal

    Perhaps someone more versed in science could tell us whether that or Hitler's speech at the 1936 Olympics is easier to detect from space.

    I've heard that mentioned a lot, that maybe they'll see our Hitler broadcasts and immediately loathe us.

    Why?

    We think he was horrible, but why would we believe for an instant that an alien might think the same? Maybe some of the powers-that-be up there are scratching their chitinous chins thoughtfully, impressed that we have such men.

  • by Arcturax ( 454188 ) on Thursday December 13, 2007 @06:13PM (#21689452)
    This is an amusing thought... if they pick up any of our TV shows and record them and show them to their whole planet to prove life is out there, aren't they then guilty of piracy?

    I don't think we have to worry about attack anyway. We have the most powerful weapon in the universe...Lawyers.

    We'll be sending lots of them as soon as they finish rebroadcasting our work without paying our starving actors or their starving descendants and then they will pay... oh they will pay.
  • Re:It's too late (Score:3, Insightful)

    by zoomshorts ( 137587 ) on Thursday December 13, 2007 @06:13PM (#21689458)
    Yes we have been sending crap into the known universe for 50
    or so years.

    This timeframe is but a fly fart in a hurricane, galactically speaking.
    What makes anyone think that intelligent beings will be looking for
    old 'I Love Lucy' episodes, freely radiated into the cosmos?

    Not to worry. Please tell Al Gore also.

  • by Blakey Rat ( 99501 ) on Thursday December 13, 2007 @06:16PM (#21689500)
    What I'm basically saying, is that "peace" is a prerequisite for achieving "space age",

    I've always thought this was BS.

    because "space age" comes only far later after "big weapons" in the technological development,
    and without "peace", a civilisation may blow it's entire planet at the "big weapons" stage, long before being able to achieve "space age".


    To quote Brain Guy in MST3K: "Our race is pacifist. We kill only out of personal spite."

    Not using big weapons doesn't imply peaceful, it only implies not using big weapons. After all, we have nukes right now, and we're in a war right now, and we're not using nukes to fight the war. But that doesn't change the fact that we're killing people, it just means we're doing it in a more targeted manner than using big weapons allows.
  • by cowscows ( 103644 ) on Thursday December 13, 2007 @06:31PM (#21689720) Journal
    At an even more basic level, even if an alien race was able to read the radio signal and construct it into an audio/video feed, would they really be able to understand it enough to form a useful opinion on what it meant? The idea of a universal translator is nice for sci-fi shows, but it doesn't seem very likely that a short speech meant for native speakers would enable someone(particularly someone with no previous knowledge of any human language)unfamiliar with the language to make any real sense of it. There just wouldn't be enough context to figure out the meanings of all those sounds. It's probably not even reasonable to expect an alien race to be able to make assumptions based on the speaker's tone and attitude like a human could.
  • by trolltalk.com ( 1108067 ) on Thursday December 13, 2007 @06:44PM (#21689906) Homepage Journal

    "No proof (how could that ever be proven?) but lots of evidence... we haven't found any yet!"

    And for most of mankinds' existence, there was no proof that oxygen existed. Or that atoms existed. Or bacteria. Or radio waves (we didn't "invent" them - Jupiter was emitting radio waves long before we existed) or X-rays, or gamma radiation, ...

    There are other, more intelligent, ways to answer the question - the "we haven't found any yet!" isn't really all that good argument.

  • by Just Some Guy ( 3352 ) <kirk+slashdot@strauser.com> on Thursday December 13, 2007 @06:54PM (#21690046) Homepage Journal

    Very true. But even if they did, would it sound inherently bad to someone who had no idea of our morality and values?

    Hitler: We must exterminate the Jews! They are destroying our society!
    Kodos: Wow. Whatever Jews are, they sure are causing that guy a lot of grief. Wonder if he gets it under control?

    Since only a small fraction of news on both sides of the issue was televised, ET might not have enough context even to know that we thought it was bad (although they'd know that at least some other factions didn't like him and his plans, even if they didn't really understand all the reasons).

  • by 0xdeadbeef ( 28836 ) on Thursday December 13, 2007 @06:58PM (#21690104) Homepage Journal
    Betraying your country is a capital crime; what do you think we should do to those who betray not only their species, but their entire genetic lineage, their planetary ecosystem, maybe even DNA itself?

    We should keep our eyes open and our mouths shut. It's a big universe, and we don't know what's out there, or how long it's been there before us.
  • by cowscows ( 103644 ) on Thursday December 13, 2007 @07:19PM (#21690446) Journal
    There's no doubt that plenty of signal leaks out into space, but it's important to realize how big space is, and how quickly the power of radio signals drop off. Imagine radio waves expanding in a sphere from an antenna. A certain amount of energy is used to create that signal. Right at that antenna, the signal takes up a small amount of space, all that energy is crammed into a small area, the signal strength is strong. That sphere of the broadcast expands out from the antenna at the speed of light. Assuming that nothing absorbs or reflects or otherwise interrupts any of the signal, that sphere of radio waves continues to grow but overall only has the same amount of energy as when it was first released. You can see how very quickly the amount of energy available at any one point on that sphere drops as the sphere expands. Now imagine a sphere with a radius of light-years. That's a whole lot of area to be spreading a set amount of energy over. It's certainly possible to focus radio signals and the like. You don't have to spread all your energy out in all directions, you can aim it somewhat. But you're not going to get a perfectly tight beam, there's going to be some spread, and over interstellar differences, what seems like a minor loss of energy will really start to become significant. And don't forget that focusing your energy into a tight beam means that it will pass by far fewer planets than a signal sent in all directions, and the chances of anyone being there to listen get much smaller.

    But wait, it gets worse. There's a lot of electromagnetic noise floating out there in the universe. There's even a big source of it close nearby, we call it the sun. With all that static going on, a weak signal can get very hard to find, especially if you aren't exactly sure what sort of signal you're looking for.

    Basically, it's not very realistic to expect people on other planets to be listening in on our TV broadcasts. Even if enough time has passed for the signals to reach them, they're not likely to get enough of a signal to be able to work with, even if they happen to be looking for exactly the right thing at exactly the right time.

  • Re:The Enemy is Us (Score:5, Insightful)

    by Mr. Bad Example ( 31092 ) on Thursday December 13, 2007 @07:52PM (#21690908) Homepage
    > [...] so they'll just nuke us from orbit. After all, it's the only way to be sure.

    Fixed that for you.
  • Re:Most notably? (Score:4, Insightful)

    by ScrewMaster ( 602015 ) on Thursday December 13, 2007 @08:09PM (#21691136)
    Even more notably, L. Ron (schmientologist) Hubbard's "Battlefield Earth", where a Psychlo reconnaissance probe picked up one of the Voyagers (in its own way a feeble attempt at communication) and backtracked the machine's course to Earth and ... that was that. After wiping us out with an invulnerable gas drone they simply moved in and began exploiting Earth's mineral resources. Conquest is easy if genocide is on the table.

    By broadcasting the way we are, we're making a couple of assumptions: a. that there are no alien civilizations out there to worry about or b. if there are, they're not actively hostile and capable of making something of it. Neither is a safe assumption. Granted, interstellar distances are a perfect defense against anyone near technological parity with us, but why would we assume that an alien civilization has advanced no further than that?

    Furthermore, some people maintain the (preposterous) belief that any race that is substantially more technically advanced than us would, somehow, have to be peaceful and beneficient. However, if they followed a developmental path anything at all like ours, they got that advanced by being anything but peaceable! Where did many of the historical discontinuities in our scientific and technical knowledge come from? Why, from the tremendous R&D investment the world's militaries command in times of war. I see no reason to assume that an alien race would necessarily be any different in that regard.

    Consider this: how many times in our own history has a culture been damaged or destroyed after encountering a more advanced one? Take our Native American friends, for example. The more capable society doesn't even have to be warlike either.
  • by dorix ( 414150 ) on Thursday December 13, 2007 @08:14PM (#21691210)
    - Could the cavemen have anything we want?

    Of course they do... Cavewomen.
  • by Pharmboy ( 216950 ) on Thursday December 13, 2007 @09:51PM (#21692248) Journal
    I also find it ironic that people make these broad claims "if it wasn't for war, just think how far we could be with space", when in fact, the opposite is likely true. Not trying to be rude, but war brings us many neet things, some of them faster than without war, some are only a result of war. Sick, but true:

    Jet engines, radar, rockets, encryption, and thousands of other inventions exist solely because we were looking for better ways to kill people. We got to the moon in the 60s because of a space race /cold war. How many others have gone since then? Exactly none, we won, no one else was interested enough to spend the money.

    As you point out, there is nothing quite like the bond of like minded people when you have a common enemy, be it across the ocean or on another planet. Half the planet uses the U.S. as the common enemy, we use terrorists (used to be communists), etc. If someone would just land here and shoot off a few rounds with a 'ray gun', maybe we could all get along, but we need enemies. We must, since the dawn of time we have always had them.
  • Very Astute (Score:4, Insightful)

    by hackus ( 159037 ) on Thursday December 13, 2007 @10:36PM (#21692674) Homepage
    If we are to believe that natural systems, such as the earth really are quite common, then "prey" and "predator" relationships must exist at all levels in the Universe.

    So it is logical to assume that there are technologically advanced civilizations that prey on other civilizations for resources or food.

    After all, we do it in our own backyard, so why can't other civilizations?

    There is nothing in the rule book that I know of that says just because a civilization has conquered space travel must not be aggressive.

    We continue to advance, yet we are still very warlike.

    -Hack
  • by Lijemo ( 740145 ) on Thursday December 13, 2007 @11:34PM (#21693146)

    What eliminates a[n alien] race that focuses all of its aggression against others not of their [species]?

    Ecological destruction?

    Actually, a big part of the process of civilization and enlightement is expanding the idea of "we". From "we" being just our family, just our clan-- to hey, the people in the next village are human to-- then realization that someone who doesn't look like you is human, too-- then the realization that if all we worry about is humans at the expense of other life-forms on the planet, we end up destroying ourselves anyway, therefore for our civilization to survive, we need to expand "we" to included, to a greater or lesser extent, the Earth ecosystem as a whole.

    A civilization that lasts to the space-faring stage, in order to survive, must have overcome the us-vs-them false polarity often enough that hopefully they would be beyond that-- or at least that any hint of falling into it again would set off warning bells.

    Well, at least in the intelligent members of the species. That won't stop the politician-aliens from draining all of the alien's resources on a preemptive strike against Earth because hey, some other planet in this sector of the galaxy attacked them once, and therefore they can make a claim, however transparent, that we were working with them, and therefore must be dangerous, too. And so then they send their own economy into a tailspin by bombing earth back to the stone age, and it will be cold comfort to us if most of the alien population was less atavistic than that...

  • by Anonymous Coward on Friday December 14, 2007 @03:47AM (#21694824)
    Hitler invaded other countries who did not threaten him with the aim of enriching his homeland, Germany.

    Bush invaded other countries who who did not threaten him with the aim of getting himself re-elected.

    And we still think HITLER is the worst politician?
  • by CarpetShark ( 865376 ) on Friday December 14, 2007 @09:27AM (#21696382)

    if it wasn't for war, just think how far we could be with space", when in fact, the opposite is likely true. Not trying to be rude, but war brings us many neet things, some of them faster than without war, some are only a result of war


    This is pure fallacy, although I appreciate that you used the word "likely" rather than speaking in absolutes. Generally, good education comes in peace time. Sharing of ideas comes from openness and trade with other tribes/cultures. Rockets are probably based on fireworks (and aerodynamics), which are based on so-called gunpowder -- something that was not used destructively for for many years after its creation. Radar came about in war, yes, but all of the technology leading up to it was developed in peacetime. That the first need to make the next leap came about because of war is irrelevant; the technology was there, the progress was ready to be made, and if the technique was needed, someone would have made that leap.

    As someone once said, "the tradegy of war is that it uses man's best to do man's worst". War is destructive, not creative. Those involved in war often claim credit for things either through delusion, or power. That does not mean that the warlike people, warlike ideals, or even warlike circumstances are the reasons such things exist. I'm sure da vinci would've preferred to work on less lethal things, if less lethal people had held the money and power.
  • by gnuman99 ( 746007 ) on Friday December 14, 2007 @02:51PM (#21700416)
    Sorry, but bullshit.

    Most efficient jet engines are for commercial planes. Everything else you mention was advanced because of stability where it was invented, not destruction. Just look at how much positive science is coming out of Palestine or Iraq or Afghanistan. The last one should be the pinnacle of human knowledge - they had was for almost 30 years now!

    Military is waste. Period. Anything positive that comes out of it is not by design, it is purely as a side-effect.

    It wasn't the military that got us to the moon. It wasn't the military building ISS. If it was up to military, we would not even have something like Hubble because it is useless.

    Anything positive comes out of the military it is only a side-effect of its intended purpose. And that purpose is to kill and control.

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