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posted by martyb on Thursday March 08 2018, @10:29PM   Printer-friendly
from the Kessler-syndrome dept.

An arXiv preprint suggests that evidence of intelligent (or trashy) life could be found by looking for space junk:

Its author, Héctor Socas-Navarro, spends most of his time at the Canary Islands Institute of Astrophysics in Spain studying the sun. But he was struck by a weird side effect of the ring of active and retired satellites circling Earth: it's a little bit opaque. And the more satellites we throw up there, the more opaque it gets. He realized that if we—or any technologically advanced aliens out there—build enough satellites, they'll eventually become dense enough to leave a faint shadow around the planet when it passes in front of a star.

And that's awfully convenient given that one of the best ways we have of spotting alien planets is by staring at their stars and waiting for tiny dips in brightness as planets pass in front of them. Essentially, Socas-Navarro's new paper proposes, if aliens have put enough satellites into orbit around their planet, we'll be able to spot the faintly opaque bubble before and after we spot the brightness dip of the planet itself.

The scale of the endeavor would be a real challenge for the aliens, however, since this idea relies on between 10 billion and one trillion satellites. "It's like building the pyramids," Avi Loeb, an astronomer at Harvard University, told New Scientist. "Each building block is easy, but putting it together is the hard engineering task."


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  • (Score: 4, Interesting) by Grishnakh on Thursday March 08 2018, @10:35PM (27 children)

    by Grishnakh (2831) on Thursday March 08 2018, @10:35PM (#649743)

    Given the extreme distance, and how little light we really get from these stars (and how slight the dimming is from a full planet) there's got to be some limit to how feasible this really is. Sure, if the aliens have a bunch of big-ass space stations (like enough to hold billions of people) and solar collectors orbiting their planet we might be able to detect the difference between that and the planet, but if they're not quite that far along it doesn't seem like we'll see anything. This really seems a bit like looking for Dyson spheres; maybe not that extreme, but still like we're trying to spot aliens who are significantly more advanced than us.

    • (Score: 2, Interesting) by milsorgen on Thursday March 08 2018, @10:40PM (6 children)

      by milsorgen (6225) on Thursday March 08 2018, @10:40PM (#649745)

      Even if feasible I would assume that the timeframe a developing civilization would create large amounts of potentially dangerous debris would be a very short one. Either they would use their resources more effectively or they would come up with a way to remove the potential impactors from orbit. Thus leaving a very narrow window of time to hopefully observe another intelligent lifeform, I guess it boils down to how ubiquitous life is out there.

      --
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      • (Score: 5, Insightful) by NotSanguine on Thursday March 08 2018, @11:38PM (5 children)

        Even if feasible I would assume that the timeframe a developing civilization would create large amounts of potentially dangerous debris would be a very short one. Either they would use their resources more effectively or they would come up with a way to remove the potential impactors from orbit. Thus leaving a very narrow window of time to hopefully observe another intelligent lifeform, I guess it boils down to how ubiquitous life is out there.

        I'd go even farther than that. The issue isn't just the vast distances involved in seeking out such debris. Given the enormous time scales of the universe, should a civilization leave their space junk lying around, its' orbits would almost certainly (unless it was an incredibly large mass of junk) have decayed within a few million years, leaving nothing we could actually detect.

        Consider the possibility that a species of dinosaur achieved sentience 75-100 million years ago. Even if they had a technological civilization, all traces of them would be completely eradicated (well, except possibly extremely long half-life artificial radioactive elements like P239) by now. Polymers would merely be carbon deposits. Any alloys would long ago have been degraded to their initial elements, any structures on the earth would have been completely destroyed/eroded away.

        As such, if we can't definitively say (and we can't) whether or not there was a previous technological civilization *on the Earth*, the likelihood of discovering remnants of one around another star are vanishingly small.

        --
        No, no, you're not thinking; you're just being logical. --Niels Bohr
        • (Score: 0) by Anonymous Coward on Friday March 09 2018, @10:44AM (2 children)

          by Anonymous Coward on Friday March 09 2018, @10:44AM (#649907)

          We find footprints and even eggshells pretty regularly... Surely a technological civilization would leave artifacts more durable than that. Metal might corrode, but ceramic and glass should last over geological timescales, not to mention stone tools or fossilized bone tools, or the "footprints" of machinery. Now, if they were just sentient but only used that ability for social interaction had no technology, then of course we could only infer that if we found a skull.

          • (Score: 2) by maxwell demon on Friday March 09 2018, @12:00PM

            by maxwell demon (1608) on Friday March 09 2018, @12:00PM (#649915) Journal

            The point is, they were so intelligent that they eventually came to the conclusion that littering the planet is a bad idea, so they collected all the artefacts in middle America, where they then destroyed them with a meteorite they directed towards earth for that purpose.

            Unfortunately they were still not intelligent enough to recognize the big error in their calculation, which led them to choose a much too big meteorite, causing their own extinction. ;-)

            --
            The Tao of math: The numbers you can count are not the real numbers.
          • (Score: 2) by NotSanguine on Friday March 09 2018, @04:54PM

            We find footprints and even eggshells pretty regularly... Surely a technological civilization would leave artifacts more durable than that. Metal might corrode, but ceramic and glass should last over geological timescales, not to mention stone tools or fossilized bone tools, or the "footprints" of machinery. Now, if they were just sentient but only used that ability for social interaction had no technology, then of course we could only infer that if we found a skull.

            Volcanism [wikipedia.org] (think the Siberian traps), plate tectonics, massive space rocks, and possibly even a large thermonuclear exchange could certainly obliterate just about any trace of a civilization over such long time scales.

            Any of the major mass extinctions [worldatlas.com] (and conceivably others less massive) could have been caused by many things, even devastating nuclear exchanges. And over the time scales we're talking about (aside from, possibly, the Cretaceous), we'd likely be unable to identify such events.

            Glass? Ceramics? Metal works? Given the geological processes at work, it's entirely possible (especially if a technological civilizations was concentrated on coastlines) that the ruins of such a civilization would be completely recycled via tectonic plate movements, with all evidence having been cycled through the Earth's mantle.

            I'm not saying that such a thing happened, I'm merely suggesting that it could have, illustrating the difficulty in identifying the remains of a another hypothetical civilization around another star. Especially given the even longer time scales (10 billion years?) and vast distances involved.

            Does that mean I think we shouldn't try? No. On the contrary, I think we should try to gather as much information about our universe as possible. Discovering such debris would be exciting, if incredibly unlikely.

            --
            No, no, you're not thinking; you're just being logical. --Niels Bohr
        • (Score: 2) by HiThere on Friday March 09 2018, @05:58PM (1 child)

          by HiThere (866) Subscriber Badge on Friday March 09 2018, @05:58PM (#650124) Journal

          The concentration of metals in ores is something that takes a long time. The dinosaurs isn't far enough back. Now if the trilobites had a technological civilization, I don't think we'd detect it unless they left traces on the moon, and we have explored enough there to rule that out...but the plausibility is quite low. The dinosaurs were (nearly?) evolved enough, but there were too many big ones for it to be plausible. (Just consider trying to fence out an apatosaurus.)

          So I'm rather certain that we're the first technological civilization on Earth.

          I guess I should have read the article, since people are talking about fragments and derelict civilizations, etc., but my first thought was that a topopolis should be rather detectable. The problem, though, is that it wouldn't be planet centric, but solar centric. Still, the inner rings would need to be as close as feasible to derive maximal energy/area from solar power, and that would mean it would need to be highly reflective to maintain a livable temperature inside. This should result in a sustained radiation spike in certain frequencies that would otherwise be hard to explain. There should also be certain effects in the heat spectrum...I don't want to say infra-red, because that's making assumptions about the habitable temperature of that lifeform. Still, it would obviously be easier to detect creatures that preferred a high temperature over those that preferred a lower temperature, unless the inner rings were automated.

          I really doubt that a civilization that had been long in space would remain planet centric, so I have my doubts about their entire scenario. Still...if they *did* find one that way...well, I'd need to revise my thinking.

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          • (Score: 2) by HiThere on Friday March 09 2018, @06:08PM

            by HiThere (866) Subscriber Badge on Friday March 09 2018, @06:08PM (#650131) Journal

            1) We haven't explored the moon enough. I don't know how I left out that "n't".
            2) Reading the article I see that they're proposing certain particular orbits, and only a very slight advance over our space capabilities. I find it hard to believe that this would be detectable, but they say they've calculated it, and certainly polished metallic objects are a lot more reflective than asteroids. I do think they're assuming that the targets would stay at approximately our level of space advancement for an extended period of time, however, and I find that implausible. We're going to either rise or fall, and soon. If we fall, we probably won't be able to get back up. If we rise, then I think the topopolis is more probable than dense clusters around the planets. (More probably, it will be something nobody's thought of.)

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    • (Score: 2) by bob_super on Thursday March 08 2018, @10:45PM (2 children)

      by bob_super (1357) on Thursday March 08 2018, @10:45PM (#649747)

      Yep, it's completely stupid.
      Don't mind me, i'm just jealous that I don't get to publish how we'll find alien civilizations by measuring how fast the CO2 goes up in their atmosphere.
      Then my next publication will be looking for atmospheric nuclear explosions on exoplanets. Those would be pretty clear signs of life, right?
      How about looking for radio waves originating from exoplanets, hoping that they would be modulated in ways similar to ours? Yep, that'd be totally dumb! Can I publish that?

      • (Score: 4, Insightful) by Grishnakh on Thursday March 08 2018, @11:10PM (1 child)

        by Grishnakh (2831) on Thursday March 08 2018, @11:10PM (#649760)

        The radio modulation thing isn't *that* dumb; there's really only a few ways to modulate radio transmissions after all (amplitude and frequency being the main two). The problem is that as radio technology progresses, at least in our experience, it becomes lower-power and the modulation for more complex, making it look essentially like random noise from a distance. In short, if aliens were trying to detect *US* by our radio transmissions, they only had a relatively short window in which to do so, the time from when we first started seriously publicly broadcasting, up until we moved to digital spread-spectrum schemes. If they tried to detect us by our emanations today, they most likely wouldn't notice us. And if our technology progression is typical, that means that we're very unlikely to detect anyone who's at least as advanced as us; we'd only be able to detect them if their earlier signals (from when they were as advanced as us in the 1950s-60s) happen to hit our antennae when we were listening. It doesn't help that even those higher-power transmissions are likely to be very difficult to detect over such a distance, since they weren't meant to be detected by far-away aliens, but only used terrestrially.

        Basically, SETI would make more sense if there were some aliens out there intentionally broadcasting very strong radio signals with the goal of being detected by us. That's not a great assumption.

        • (Score: 2) by Immerman on Friday March 09 2018, @02:31AM

          by Immerman (3985) on Friday March 09 2018, @02:31AM (#649819)

          What about polarization - either linear or radial?

          But yeah, even that only pushes it up to possible modulations... though I honestly don't know if anyone is seriously looking at polarization at all. Heck, for all I know the interstellar medium might destroy polarization, which could actually be an advantage for a security- or obscurity-minded species.

    • (Score: 3, Interesting) by fyngyrz on Thursday March 08 2018, @10:56PM (11 children)

      by fyngyrz (6567) on Thursday March 08 2018, @10:56PM (#649751) Journal

      Given the extreme distance, and how little light we really get from these stars (and how slight the dimming is from a full planet) there's got to be some limit to how feasible this really is.

      Here's the thing: Aperture synthesis. [wikipedia.org]

      On earth, there are pretty obvious limits to this, although, still outright amazing.

      Once telescopes are established in space... those limits move way, way down the line. The people to whom this is available to will see (even more) amazing things.

      My guess: most likely, the space version of this will be entirely practical within 100 years or so, once we get resource development, manufacturing and robotics established "out there."

      • (Score: 2) by Grishnakh on Thursday March 08 2018, @11:22PM (7 children)

        by Grishnakh (2831) on Thursday March 08 2018, @11:22PM (#649768)

        Here's a question for astrophysicists:

        Would there be any significant advantage to locating a telescope (or array of them) in interstellar space, outside the heliosphere? Is being inside the heliosphere limiting what we can see, the way that being inside our planet's atmosphere does?

        • (Score: 3, Informative) by takyon on Thursday March 08 2018, @11:43PM (6 children)

          by takyon (881) <takyonNO@SPAMsoylentnews.org> on Thursday March 08 2018, @11:43PM (#649777) Journal

          It's probably not even worth thinking about.

          The closest idea to that being considered right now is probably FOCAL:

          https://en.wikipedia.org/wiki/FOCAL_(spacecraft) [wikipedia.org]
          https://www.airspacemag.com/daily-planet/ultimate-space-telescope-would-use-sun-lens-180962499/ [airspacemag.com]
          https://www.centauri-dreams.org/2006/08/18/the-focal-mission-to-the-suns-gravity-lens/ [centauri-dreams.org]
          https://arxiv.org/abs/1604.06351 [arxiv.org]

          Using the Sun as a gravitational lens by putting a telescope ~600 AU away would have a vastly greater effect on what we can observe than moving out of the heliosphere.

          The next milestone after that would be sending a starchip or other craft to another star system, such as Proxima/Alpha Centauri.

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          • (Score: 2) by Grishnakh on Friday March 09 2018, @01:26AM (5 children)

            by Grishnakh (2831) on Friday March 09 2018, @01:26AM (#649797)

            FOCAL looks like it would require a telescope well outside the heliosphere, as it needs to be about 600AU, and the heliosphere seems to be about 120AU according to my quick Wikipedia research, so that's sorta doing what I suggested, but of course for a very different reason. One big problem with it, however, is that it can only look in one direction (toward the Sun), so if you want to see anything else, you have to move the telescope.

            As for sending a starship to another star system, I don't see how that really helps much. It would let you see stuff in that system close-up, obviously, but if you want to observe lots of star systems, or even galaxies, I don't see how it's really any better than doing it right here. It'll help if you really want to see some star system that's nearby, and closer to Alpha Centauri than here (like something on the other side of it), but that's probably only a handful of systems that are close enough to AC to really make a difference; with farther systems, you're not getting that much closer.

            I was just wondering if the effects of the heliosphere were causing any issues with long-range observation and if there'd be a significant difference in interstellar space. I'm not sure we know that very well at this point though, since we've only barely penetrated that region, and only with very old spacecraft that, I believe, no longer even have functional cameras. You're probably right though: it's probably insignificant.

            • (Score: 2) by takyon on Friday March 09 2018, @02:24AM (1 child)

              by takyon (881) <takyonNO@SPAMsoylentnews.org> on Friday March 09 2018, @02:24AM (#649815) Journal

              It would be cool to stick a huge ground telescope on a moon of Planet Nine (700+ AU away). Assuming they both exist.

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            • (Score: 2) by All Your Lawn Are Belong To Us on Friday March 09 2018, @03:49PM (2 children)

              by All Your Lawn Are Belong To Us (6553) on Friday March 09 2018, @03:49PM (#650031) Journal

              That is about the distance of the heliopause, if we haven't moved the cheese again on the Voyager data [xkcd.com]. (Actually, no, the second heliopause announcement seems to have been a PR agent error [arstechnica.com]). But at lunch the other day we were talking about Voyager which got me to look up that the Voyagers are 141 and 117 AU's away currently - since Voyager 1's heliopause was measured about 116 AU's, makes me wonder when we'll hear about Voyager 2.

              It also mades me wonder what the travel time for a dedicated mission to 600 AU's would be. Speed is variable to thrust, of course, and the Voyagers had a different mission, but 40 years to 140 AU.... At Voyager 1's heliopause recession speed of 17 km/s (the fastest so far per Wikipedia) by my calculations shows 167 years to 600 AU. Talk about your long-range mission planning!

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              • (Score: 1) by Grishnakh on Friday March 09 2018, @04:25PM (1 child)

                by Grishnakh (2831) on Friday March 09 2018, @04:25PM (#650044)

                Yeah, you'd really need a more powerful rocket for a decent mission to 600AU. I also wonder what the transmission delay would be, and how much trouble they'd have maintaining radio communication over that distance.

                • (Score: 3, Interesting) by All Your Lawn Are Belong To Us on Friday March 09 2018, @05:20PM

                  by All Your Lawn Are Belong To Us (6553) on Friday March 09 2018, @05:20PM (#650079) Journal

                  600 AU is 3.46 light-days - so a full week for a roundtrip signal. Signal degradation in free space is interesting. We're already getting signal from Voyager past the heliosphere and NASA said they could still run radio communications for another couple of decades with Voyager, alignment thrust issues notwithstanding... I wonder if there is anything out there that would significantly degrade the signal? I think I remember reading our current uplink signal is 17.5 kW. Again if I remember right we're receiving something like -123dB strength from Voyager on Earth; its radios are 23 watts at 8 GHz. (The 144 MHz radio I have in my car can do 50 W at that frequency, but I think 23W @ 8 is pretty screaming in terrestrial terms).

                  It's a bandwidth tradeoff, though. Higher data rates require more power. Voyager does between 160 bits per second and 1.4 kbps.

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      • (Score: 1) by Ethanol-fueled on Friday March 09 2018, @02:03AM

        by Ethanol-fueled (2792) on Friday March 09 2018, @02:03AM (#649806) Homepage

        Wonder if there's a way to utilize an array plus degree of backscatter to look for space junk. Backscatter would make sense to detect reflected radiation from a sensor or irregulary-shaped target (asteroid belt or space junk) in motion with respect to each other, but from the perspective of a single sensor or closely-spaced group of sensors, the return reflections are interpreted as attenuation rather than a high-backscatter target.

      • (Score: 2) by HiThere on Friday March 09 2018, @06:18PM (1 child)

        by HiThere (866) Subscriber Badge on Friday March 09 2018, @06:18PM (#650136) Journal

        Aperture synthesis is great for refining focus, but it doesn't do much for collecting additional photons. That's strictly dependent of reception area (and, of course, sensitivity). If what you need is a clearer image, then aperture synthesis is the best way to go. If the signal's too weak to read, you need a larger or more sensitive detector.

        What I think would be (eventually) great is a couple of 5 mile diameter mirrors at opposite point of Neptune's orbit. But that's not going to happen *this* decade. (For best results you need three mirrors, and the third should be inside Mercury's orbit, when measured by projection onto the orbital plane, but as far above it as the diameter of Neptune's orbit. That way when you synthesize the aperature you get a real 3-D image.)

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        • (Score: 2) by fyngyrz on Friday March 09 2018, @10:29PM

          by fyngyrz (6567) on Friday March 09 2018, @10:29PM (#650272) Journal

          If the signal's too weak to read, you need a larger or more sensitive detector.

          Or, if you can keep the sensor noise down, more time.

          They're pushing photon counting [gigajot.tech] now, so there's that to look forward to. Once you're down to counting actual photons, as opposed to random electrons wobbling off the sides of a collection well, all you need are counters. Given enough time, signal will emerge from the noise. Noise is random; it averages out. Signal is not, and does not. As long as there is some signal. And generally speaking, in cases like this, there is.

          You can get astonishingly good astro images using nothing but a DSLR with multiple exposures and image stacking+post-shooting-alignment to push the noise down. I do a bit of that myself. Magnitude 10 and even dimmer objects are easily captured at reasonable ISOs with the most mundane equipment.

    • (Score: 2) by JoeMerchant on Thursday March 08 2018, @11:08PM (2 children)

      by JoeMerchant (3937) on Thursday March 08 2018, @11:08PM (#649759)

      The whole space-elevator concept would lead to a visible ring, if practical. Chemical rockets, not so much (unless they have very little gravity.)

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      • (Score: 1) by Ethanol-fueled on Friday March 09 2018, @02:05AM (1 child)

        by Ethanol-fueled (2792) on Friday March 09 2018, @02:05AM (#649808) Homepage

        The space-elevator concept is to space enthusiasts as Yakub or Xenu are to religious people. Let that comparison sink in for a moment.

        • (Score: 4, Insightful) by Immerman on Friday March 09 2018, @02:54AM

          by Immerman (3985) on Friday March 09 2018, @02:54AM (#649823)

          Only on Earth, and only the beanstalk variety. Earth-based "beanstalk" space elevators are so far at the extreme edge of feasability that they look increasingly unlikely to ever be possible - Carbon nanotubes, which we have good reason to suspect are approaching the physical limits of tensile strength, have only barely the strength-to-weight ratio to make it possible, theoretically. And no engineer worthy of the name would even consider building such a structure with safety margins measured in single-digit percentages.

          On the moon though,and many other planet(oids) it's a whole different ballgame - existing bulk carbon fiber cable is more than strong enough to do the job with a decent safety margin. Even Mars wouldn't need much advancement in material science - If the population eer get

          And of course, there are many, many other concepts that fall under the umbrella of "space elevator" : fountains, tumbling cables/wheels, etc, etc, etc - many of which are quite feasible with existing technology, even here on Earth. They just mostly have such outlandish up-front costs or concepts that they're unlikely to get built until space-travel becomes far more routine, and additional incremental cost savings are desired beyond what fully-reusable rockets could deliver. But, assuming civilization doesn't collapse in the next few centuries, nor lose interest in space, that seems rather inevitable.

          It's rather like the difference between automobiles and rail - autos (rockets) are FAR more cost effective in low-traffic / low infrastructure use-cases, but rail is unquestionably vastly superior when it comes to efficiently moving large volumes of freight on a regular basis.

    • (Score: 2) by frojack on Friday March 09 2018, @07:58AM (1 child)

      by frojack (1554) on Friday March 09 2018, @07:58AM (#649885) Journal

      any technologically advanced aliens out there—build enough satellites, they'll eventually become dense enough to leave a faint shadow around the planet

      No they wouldn't. Aliens significantly more advanced than us would have learned long ago how to deorbit their space junk and recycle it.

      And no advance society is going to have billions of individuals living on space stations. We are planetary animals. Perfectly adapted to our planets.
      Advanced societies would learn to take care of their planet rather than moving onto space stations.

      If you put ALL the space junk we've ever launched on a football field it wouldn't even cover half.

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      • (Score: 1, Insightful) by Anonymous Coward on Friday March 09 2018, @10:51AM

        by Anonymous Coward on Friday March 09 2018, @10:51AM (#649908)

        We are really only perfectly adapted to live in the African savanna. But we live in lots of other places too - so much so that most of humanity isn't actually properly adapted to live there any more.

        While any civilization with sufficient technology will no doubt have certain factions who prefer to live on planets, just as we have some people who prefer to live in the middle of nowhere and hunt for food, someone will decide to live in space if it is possible to do so. Their children will consider it home and find it completely natural. And given the disparity in living space and resources, their descendants will outnumber the planet-bound by a billion to one.

  • (Score: 0) by Anonymous Coward on Thursday March 08 2018, @10:36PM (9 children)

    by Anonymous Coward on Thursday March 08 2018, @10:36PM (#649744)

    Only technologically primitive aliens will be detectable during the brief period in their development between inventing orbital launch capability and inventing methods of recycling space junk.

    Just like Hitler's TV broadcasts leaked RF radiation into space because Trump's Twitter account didn't exist yet.

    • (Score: 2) by takyon on Thursday March 08 2018, @10:49PM (8 children)

      by takyon (881) <takyonNO@SPAMsoylentnews.org> on Thursday March 08 2018, @10:49PM (#649749) Journal

      Just like Hitler's TV broadcasts leaked RF radiation into space because Trump's Twitter account didn't exist yet.

      https://www.space.com/17151-alien-wow-signal-response.html [space.com]

      Just in case any aliens out there in the universe are listening, more than 10,000 Twitter messages, plus videos from celebrities such as comedian Stephen Colbert, have been beamed into space as a big "Hello!" from Earth.

      [...] A project directed by the National Geographic Channel and Arecibo Observatory beamed a package of digital information out to the heavens on Wednesday (Aug. 15) containing Twitter messages from the public, submitted via the hashtag #ChasingUFOs, as well as videos from celebrities such as Stephen Colbert, Jorge Garcia, and Leila Lopes, the 2011 Miss Universe.

      http://tweetsinspace.org [tweetsinspace.org]

      During the 30-minute performance, we collected all tweets with our custom #tweetsinspace tag. More than 50 press articles – including the NY Daily News, BBC, Time, Wired and Scientific American – led to worldwide participation, where we gathered over 1500 texts, about 1 tweet per second. These messages ranged from simple greetings to aliens, to worries about the destruction of Earth, to questions of extraterrestrial social and economic systems. Together and as a people, we asked questions, requested photos, and begged forgiveness for humanity’s flaws. In the various threads of ongoing conversation, the most commonly used words (other than articles like ‘the’) were please and love, followed by hello, here, help, and peace. All these voices together express existential feelings of wonder and fear, curiosity and happiness, hope and cynicism, and more.

      [...] On November 28th, 2012, all Tweets in Space messages were transmitted via both analog and digital signals towards our target planet, using a high amplitude, high frequency radio telescope.

      https://www.sapiens.org/column/wanderers/messaging-to-extraterrestrial-intelligence/ [sapiens.org]

      Perhaps the Microsoft programmers who created Tay assumed that by interacting with humans online and conducting related internet searches, the artificial intelligence would reflect an idealized image of humanity and how we communicate. Instead Tay showed us the worst of humanity’s prejudice, hatred, and bigotry. Tay is a reminder that we may not have as much control over the messages we do send to extraterrestrial life and that we may, in fact, already be sending a message.

      Like Tay interacting with people on Twitter, extraterrestrials won’t only see what we intend them to see. They will see all of us—everything we do and say, our entire planet, the full range of what it is to be human. They will see our bigotry, hatred, cooperation, and care—our wars, love, power struggles, artworks, stories, songs, and bombs. Just as Tay didn’t see only the good in online discussions, we may not be able to send extraterrestrials a message that represents only the best of our traditions, behaviors, actions, and ideas.

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      • (Score: 0, Informative) by Anonymous Coward on Thursday March 08 2018, @10:56PM (2 children)

        by Anonymous Coward on Thursday March 08 2018, @10:56PM (#649750)

        Space Jews are black on the left side.

      • (Score: 3, Informative) by Grishnakh on Thursday March 08 2018, @11:13PM (2 children)

        by Grishnakh (2831) on Thursday March 08 2018, @11:13PM (#649763)

        Perhaps the Microsoft programmers who created Tay assumed that by interacting with humans online and conducting related internet searches, the artificial intelligence would reflect an idealized image of humanity and how we communicate. Instead Tay showed us the worst of humanity’s prejudice, hatred, and bigotry.

        This is BS. Tay was a creation of Microsoft, and as such was an official speaker for MS, and showed us exactly what that company stands for. If you buy from Microsoft, you're supporting a company that really believes that Hitler did nothing wrong. They said it themselves. Do you want your money going to such a company?

        • (Score: 3, Funny) by toddestan on Friday March 09 2018, @03:33AM (1 child)

          by toddestan (4982) on Friday March 09 2018, @03:33AM (#649833)

          This is BS. Tay was a creation of Microsoft, and as such was an official speaker for MS, and showed us exactly what that company stands for. If you buy from Microsoft, you're supporting a company that really believes that Hitler did nothing wrong. They said it themselves. Do you want your money going to such a company?

          You think that is bad? You should see some of the search results that Bing will return! I mean, it's on a website that is operated by Microsoft, so these results pages clearly represent what Microsoft believes! Would you want your money going to such a company?

      • (Score: 2) by bob_super on Thursday March 08 2018, @11:18PM (1 child)

        by bob_super (1357) on Thursday March 08 2018, @11:18PM (#649766)

        > On November 28th, 2012, all Tweets in Space messages were transmitted via both analog and digital signals
        > towards our target planet, using a high amplitude, high frequency radio telescope.

        I was gonna rant about the stupidity of both twitter and a one-time transmission, going over the mind-bogglingly ridiculous odds of anyone anywhere capturing and decoding it. I guess someone has money to burn in this post-scarcity world of ours.

        But instead, I just need to point out it's not fair to cut off just before the most enlighting part of the release:

        These “twitters” are stretched across all time and space as a reflection on the contemporary phenomenon of the “status” updates we broadcast, both literal and metaphoric. Our stellar discussion will outlive all its original participants, endlessly reverberating themes of connectivity, humility, and optimism for the future.

        Artsy pseudo-philosophical bullshit, then... move along, scientific considerations.

  • (Score: 2) by looorg on Thursday March 08 2018, @10:59PM (3 children)

    by looorg (578) on Thursday March 08 2018, @10:59PM (#649752)

    So we assume that the aliens (or mutants or other species) are just like in Futurama and will gather all their garbage into a giant ball, stick it on a rocket and try to launch it into the nearest sun? OK so it was Satellites he talked about, what if the Aliens are green (in more ways then one) and they like to recycle all their old satellites then they won't leave any, or as many, clues. Sneaky aliens!

    (1) https://en.wikipedia.org/wiki/A_Big_Piece_of_Garbage [wikipedia.org]

    • (Score: 0) by Anonymous Coward on Thursday March 08 2018, @11:06PM

      by Anonymous Coward on Thursday March 08 2018, @11:06PM (#649758)

      Do we really want to meet the Malon, who never recycled their toxic waste, because dumping their garbage in outer space was slightly cheaper?

    • (Score: 2) by JoeMerchant on Thursday March 08 2018, @11:17PM (1 child)

      by JoeMerchant (3937) on Thursday March 08 2018, @11:17PM (#649765)

      What if the aliens have transcended physical form and now exist as coded energy? We seem to be on a path to do this ourselves, sooner than later if we muck up the planet any more.

      --
      🌻🌻 [google.com]
      • (Score: 0) by Anonymous Coward on Thursday March 08 2018, @11:19PM

        by Anonymous Coward on Thursday March 08 2018, @11:19PM (#649767)

        Agent Smith was right. Humans are malware.

  • (Score: 2, Insightful) by Anonymous Coward on Thursday March 08 2018, @11:23PM

    by Anonymous Coward on Thursday March 08 2018, @11:23PM (#649770)

    They are going to look for space junk around exoplanets. Massive reality check on the pseudoscience being spouted here. There is a very interesting video on Youtube about Python being used in astronomy. https://youtu.be/lWl6d7mkru4 [youtu.be]
    It is worth the time to watch the whole thing, but around the 4 minute mark he talks about exoplanets and how they are "seen" today. Maybe the future projects will see more, but those are still in the pipeline and not available today.
    Spoiler alert: "exoplanet" is based on a small dip in brightness looking at a star that consists of 4 pixels. And they want to see space junk. Really?

  • (Score: 0) by Anonymous Coward on Friday March 09 2018, @12:15AM

    by Anonymous Coward on Friday March 09 2018, @12:15AM (#649785)

    How to distinguish between monkeys throwing bones into orbit?

  • (Score: 0) by Anonymous Coward on Friday March 09 2018, @12:56PM

    by Anonymous Coward on Friday March 09 2018, @12:56PM (#649934)

    Life on this planet has been around for a very long time compared to human recorded history.
    What makes us say that we are the first to get to space in this solar system?

    The pseudo-science 'search' assumes that ET's rise to space overlaps us in time.
    The odds require ET to be around a very long time in order for us to see him.
    What makes us think that we'll still be able to do space in even a short 10,000 years?

    The 'what' is the arrogance of humans as a species.
    It seems likely that same 'what' is going to do us in long before ET gets to say hi.

  • (Score: 0) by Anonymous Coward on Friday March 09 2018, @01:38PM (2 children)

    by Anonymous Coward on Friday March 09 2018, @01:38PM (#649943)

    We like to pretend we are. When we survive the first global extinction event to hit us without throwing us back to the stoneage we might deserve that label.

    • (Score: 2) by HiThere on Friday March 09 2018, @06:27PM (1 child)

      by HiThere (866) Subscriber Badge on Friday March 09 2018, @06:27PM (#650139) Journal

      Does it count if we're the ones that caused the "global extinction event"?

      If it does, we're right in the middle of one right now. Of course, we haven't survived it yet.

      --
      Javascript is what you use to allow unknown third parties to run software you have no idea about on your computer.
      • (Score: 0) by Anonymous Coward on Sunday March 11 2018, @03:51AM

        by Anonymous Coward on Sunday March 11 2018, @03:51AM (#650757)

        What we're doing at present might be bad but it's not on the same tier of a global extinction event although some like to present it that way. Specifically because it's not a single event, it's a slow ass process.

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