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posted by fyngyrz on Wednesday April 11 2018, @07:29PM   Printer-friendly
from the stars-donating-plasma dept.

Amid much excitement in 2016, astronomers revealed the discovery of an Earth-sized planet around the star closest to our Sun, Proxima Centauri. This exoplanet, just 4.2 light years from Earth, was close enough to its red dwarf star that water might well exist on its surface.

Alas, now we know that life probably does not live on the planet, at least not on the surface. In March 2016, astronomers using an array of telescopes known as Evryscope observed a "superflare" 10 times larger than any previous one detected from the red dwarf star.

The arXiv. Abstract number: 1804.02001 (About the arXiv). Submitted to AAS Journals.


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  • (Score: 0) by Anonymous Coward on Wednesday April 11 2018, @07:50PM (12 children)

    by Anonymous Coward on Wednesday April 11 2018, @07:50PM (#665503)

    Proxima increased in brightness by a factor of ~68 during the superflare, reaching a brightness just visible to the naked eye at dark sites (and easily seen with binoculars, if someone was looking in the right direction).

    wouldn't it be rad to see a twinkling star and then find out it was actually a superflare wiping out all life on the closest habitable planet and making it totally unlivable for us

    • (Score: 3, Touché) by wisnoskij on Wednesday April 11 2018, @07:53PM (11 children)

      by wisnoskij (5149) <reversethis-{moc ... ksonsiwnohtanoj}> on Wednesday April 11 2018, @07:53PM (#665506)

      totally unlivable for us

      More like sterilized and ready for colonization.

      • (Score: 0) by Anonymous Coward on Wednesday April 11 2018, @07:57PM (1 child)

        by Anonymous Coward on Wednesday April 11 2018, @07:57PM (#665508)

        IIRC, the planet is believed to be tidally locked.

        • (Score: 5, Interesting) by insanumingenium on Wednesday April 11 2018, @08:21PM

          by insanumingenium (4824) on Wednesday April 11 2018, @08:21PM (#665523) Journal

          Which means that the planet might make an excellent place for us depending on atmosphere, but that there probably isn't a region that would handle evolving life as we know it. -30c perpetual night lacks any liquid water, but isn't even difficult for us to survive in, UV kills everything bright side, and probably would also be easy for us to protect ourselves from. And if there are any extremophiles that evolved in there, that would be interesting too.

      • (Score: 0) by Anonymous Coward on Wednesday April 11 2018, @08:02PM (1 child)

        by Anonymous Coward on Wednesday April 11 2018, @08:02PM (#665510)

        A Tesla is on its way. All YOU have to do is strap on a rocket pack and when you arrive there (in 4,700 lifetimes) you will at least have a car waiting. Disclaimer: some damage may occur during shipping.
        Observing this kind of event - the planet being zapped - should make us all realize and be grateful for the absolutely "sweet spot" our Earth is in. In the vast cosmos there may be trillions of stars, planets and moons, but a genuine habitable zone planet supporting any form of life? Rare indeed.

      • (Score: 2) by AthanasiusKircher on Wednesday April 11 2018, @09:57PM (5 children)

        by AthanasiusKircher (5291) on Wednesday April 11 2018, @09:57PM (#665571) Journal

        From TFA:

        Based on these observations and those of other instruments with spectrographs, the astronomers determined that about five of these superflares occur in a given year.

        So unless you want to live underground, not sure this will be a nice environment to live in.

        • (Score: 2) by bob_super on Wednesday April 11 2018, @10:07PM

          by bob_super (1357) on Wednesday April 11 2018, @10:07PM (#665580)

          For you no, but for the local species which evolved to derive sustenance from superflares, it's Christmas time!

        • (Score: 2) by takyon on Thursday April 12 2018, @04:27AM (3 children)

          by takyon (881) <takyonNO@SPAMsoylentnews.org> on Thursday April 12 2018, @04:27AM (#665748) Journal

          Make a "Dyson shield" in geosynchronous orbit aimed at the star. Beam any energy collected to the surface.

          yes this idea is probably bullshit
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          • (Score: 2) by c0lo on Thursday April 12 2018, @05:56AM (2 children)

            by c0lo (156) Subscriber Badge on Thursday April 12 2018, @05:56AM (#665762) Journal

            You could, but to do it you'll have to consume the entire planet for the material.
            Better let the planet in place and bring in in its L2 point another planet and use it for habitation.

            shitty idea too, L2 is not a stable equilibrium point

            --
            https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
            • (Score: 2) by takyon on Thursday April 12 2018, @02:26PM (1 child)

              by takyon (881) <takyonNO@SPAMsoylentnews.org> on Thursday April 12 2018, @02:26PM (#665932) Journal

              I doubt you would need to use the entire planet's mass to make a dyson-anything composed of relatively thin pieces that scatter the radiation.

              Another point to consider is that Proxima b's [wikipedia.org] minimum mass is estimated to be above Earth's: about 1.27 M.

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              • (Score: 2) by c0lo on Thursday April 12 2018, @02:33PM

                by c0lo (156) Subscriber Badge on Thursday April 12 2018, @02:33PM (#665940) Journal

                I doubt you would need to use the entire planet's mass to make a dyson-anything composed of relatively thin pieces that scatter the radiation.

                If you don't prop them somehow, thin and lightweight pieces will get blown away by the radiation pressure

                --
                https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
      • (Score: 2) by Grishnakh on Thursday April 12 2018, @01:29AM

        by Grishnakh (2831) on Thursday April 12 2018, @01:29AM (#665678)

        Except that this superflare probably happens every so often, so it'll happen again after you colonize it.

  • (Score: 3, Interesting) by Bobs on Wednesday April 11 2018, @08:58PM (1 child)

    by Bobs (1462) on Wednesday April 11 2018, @08:58PM (#665544)

    So, does this mean the kill bots took out the neighbors and are on their way here next?

    • (Score: 3, Funny) by Thexalon on Thursday April 12 2018, @03:07AM

      by Thexalon (636) on Thursday April 12 2018, @03:07AM (#665721)

      No, but it does mean that somebody really hated the local planning department office of the Galactic Hyperspace Planning Council. Probably with good reason. Serves 'em right sending the Vogon destruction fleet after the wrong planet.

      --
      The only thing that stops a bad guy with a compiler is a good guy with a compiler.
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