A Dyson sphere is a hypothetical megastructure that encompasses a star and captures a large percentage of its power output. The concept is a thought experiment that attempts to imagine how a spacefaring civilization would meet its energy requirements once those requirements exceed what can be generated from the home planet’s resources alone. Because only a tiny fraction of a star’s energy emissions reaches the surface of any orbiting planet, building structures encircling a star would enable a civilization to harvest far more energy.

  • Spacehooks@reddthat.com
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    3 days ago

    Be carful with those. You may block the light of constellation aliens use and really piss then off.

  • Einar@lemm.ee
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    3 days ago

    You need to watch more Star Trek, friend.

    Specifically “The Next Generation”, Season 6, Episode 4, " Relics".

    Thank me later. 😁

  • halyk.the.red@lemmy.ml
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    3 days ago

    A pinnacle of science, a wonder of engineering, that we will never get to see in our lifetimes. Instead, we get to see Taiwan get nuked or something, I don’t know. I don’t follow the news much, I only know I’m disappointed.

  • batcheck@lemmy.world
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    3 days ago

    Came here to say that if you like this concept, Peter Hamilton has a book series called Commonwealth Saga in the science fiction category that is excellent. Lots of pseudoscience from early 2000s in that series.

  • M137@lemmy.world
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    2 days ago

    Some TIL posts really surprise you, it’s crazy to me that you have never heard about this. Not being degrading or anything like that, it’s just surprising.

      • Rowan Thorpe@lemmy.ml
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        1 day ago

        That’s definitely one of Randall’s more wholesome ones. By the way, this is one of my favourite book quotes on that subject:

        The best thing for being sad," replied Merlin, beginning to puff and blow, "is to learn something. That’s the only thing that never fails. You may grow old and trembling in your anatomies, you may lie awake at night listening to the disorder of your veins, you may miss your only love, you may see the world about you devastated by evil lunatics, or know your honour trampled in the sewers of baser minds. There is only one thing for it then — to learn. Learn why the world wags and what wags it. That is the only thing which the mind can never exhaust, never alienate, never be tortured by, never fear or distrust, and never dream of regretting. Learning is the only thing for you. Look what a lot of things there are to learn.

        T.H. White, The Once and Future King

    • Kyoyeou (Ki jəʊ juː)@slrpnk.netOP
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      2 days ago

      Yeah never heard about it, although I never watched Star Trek personally.

      But did you know that we can extract Graphene by heating it up super high so that everything else gets destroyed except graphene?

      • rumba@lemmy.zip
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        2 days ago

        I think freeman Dyson beat em to the punch by several decades :)

        The game is truly great though.

  • Tuxman@sh.itjust.works
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    2 days ago

    I don’t remember the math, but you lose return on investment after a certain percentage of coverage.

    Dyson Grids are the future!!! 😜

    • Fedegenerate@lemmynsfw.com
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      21 hours ago

      The other “benefit” to the sphere is blacking out a star. Other life, should it exist, is less likely to find the structure. ITT people destroying my dreams of a big shelly boi

      • Bimfred@lemmy.world
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        2 days ago

        I would think it’d make it more likely that you’re discovered when you turn your star into a black ball with a gigantic IR signature where a star should be. Any civilization with a cursory understanding of gravity and stellar spectra would turn every telescope they have on you.

        • Fedegenerate@lemmynsfw.com
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          2 days ago

          What does IR red shift into over cosmic distances? But it would be just as, if not less, noticeable as a star suddenly dimming to [100%-optimal capture rate]

          • Bimfred@lemmy.world
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            2 days ago

            Deeper IR, microwave and radio. Within a galaxy, redshift can be ignored. In another galaxy, the issue is moot, you don’t need to worry about them and they don’t need to worry about you.

            Our current scopes can pick up brown dwarfs with a surface temperature below freezing. An object the diameter of a planetary orbit, with the gravitational effect of a main sequence star and giving off just black body radiation is gonna stick out like a neon “Interesting stuff here!” sign the moment someone does a long wavelength survey of your general region.

            Even if you build a swarm instead of a solid shell, you’re still going to shift the star’s apparent spectrum towards IR, from the swarm radiating waste heat. A star whose mass, diameter and emission spectrum don’t match up with the math is inviting investigation, regardless of how you try to mask what you’ve been doing.

          • PlasticExistence@lemmy.world
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            2 days ago

            The gravity from the star will also still be there regardless of how much of its EM signature is visible outside of the sphere.

    • I Cast Fist@programming.dev
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      2 days ago

      Or DYson Bubbles, which would also “cover” enough “surface” to be viable without needing god knows how many planets’ worth of material

        • Rowan Thorpe@lemmy.ml
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          1 day ago

          It would probably be configured using YAML and require health checks and quorum monitoring. I’m not sure I would want that job, especially on-call shifts. The consequences of downtime would be on a whole other level.

  • endeavor@sopuli.xyz
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    2 days ago

    Maybe make it a dyson fan since the sphere would only work during the daytime. In polar areas that means half a year without any energy production!

    Whereas there is always solar wind.

    • spicehoarder@lemm.ee
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      2 days ago

      My initial reaction: “What? No.”

      After thinking a little bit: “hmm I guess you could say that…”

      • m0darn@lemmy.ca
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        14 hours ago

        Like I’m sure it’s not but I don’t know if it’s a worse explanation than any of the other ideas being considered. But I don’t know enough to even know how wrong I am.