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  • Human history is told by the energy we use. At first we had to use our muscles, then we learned to control fire.


  • We industrialized the world using coal and oil and entered the Atomic Age when we learned how to split a nucleus.

    初めは自らの筋肉を用い、 次いで火をコントロールすることを学んだ

  • At each step, we increased our energy harvest to a scale never seen before and advanced as a species.

    石炭や石油で世界を工業化し 核分裂を知り原子力の時代に入った

  • Currently, we're slowly transitioning to renewables and if we're lucky, fusion energy will become viable in the future.

    それぞれの段階で、生み出すエネルギーは それ以前に比べ格段に向上し

  • As humanity progresses further, if we don't destroy ourselves or our habitat,


  • we will likely gain complete control of our planet's resources.

    現在、徐々に再生可能エネルギーに 移行している最中であり

  • At that stage we'll probably begin to look outwards for new places to expand into.


  • But space is hard and establishing a serious human presence in the solar system will require

    人類がさらに進歩し、 人類自身やその住処を破壊しなければ

  • ungodly amounts of energy.

    我々はこの惑星の資源を完璧に コントロールできるようになるかもしれない

  • Luckily, we know where to find it. The Sun - the ultimate source of energy.

    この段階に至り、さらに拡大するための新天地を求め 外に目を向けるようになるだろう

  • A furnace 100 quintillion times more powerful than our most efficient nuclear reactor.

    しかし宇宙は厳しい環境にあり、 人類が本格的に太陽系へ進出するには

  • It shines with the energy of a trillion nuclear bombs per second.

    神をも恐れぬほどの大量のエネルギーが 必要となるだろう

  • So, how do we get this energy? Not some of it, all of it.

    幸運なことに、それが何処にあるか我々は知っている 究極のエネルギー源である太陽だ

  • If we want to collect the most energy physically possible, we'll have to build the largest most

    最も効率的な原子炉の1000京倍の エネルギーを生み出す炉である。

  • ambitious structure in the universe.

    その輝きは、核爆発が1秒間に発するエネルギーの 1兆倍に相当する

  • The Dyson Sphere, a megastructure that encompasses a whole star to capture its power output.

    では、どうやってそのエネルギーを取り出すか。 それも一部ではなく、すべてを

  • For an intelligent species, building a Dyson Sphere is a technological leap on a par with the discovery of fire for our ancestors.

    出来る限り多くのエネルギーを集めるには、 これまでなく巨大で野心的な建造物が必要となる

  • The transition from a planetary species to an interstellar species. It would usher in an age of exploration and

    「ダイソン球」 恒星をすっぽりと包み エネルギーを取り出す超巨大建造物だ

  • expansion on a scale we can barely imagine.

    知的生命体として、ダイソン球の建造は 祖先が火を発見した時に匹敵する技術的な飛躍だ

  • So, what would it look like?

    惑星に依存している種から 惑星間に存在する種への転換

  • Solid shell enveloping the Sun is probably not the way to go a large rigid body like that would be vulnerable to impacts

    それは、我々が想像もできないほどの 冒険と拡大の時代への幕開けとなる

  • possibly shattering it would be liable to drift and could crash straight into the Sun a


  • More, viable design for a Dyson Sphere might be a Dyson swarm an enormous set of orbiting panels that collect the sun's power and

    太陽を覆うのに固い外殻は向いていないだろう 固い物質は衝突に弱く

  • beam it elsewhere


  • such as sward would give humanity basically unlimited energy but building it won't be easy

    もっと現実的な方法は軌道上に大量のパネルを設置し 太陽光エネルギーを集めるダイソン群だ

  • the Sun is very big so we need a lot of satellites if

    人類はそこから無尽蔵のエネルギーを得られる しかし、その建設は簡単ではないだろう

  • Each satellite is a square kilometer we'd need around 30 quadrillion to surround the Sun


  • even if they're built as lightly as possible we need about 100 quintillion tons of material and

    もし一つのパネルのサイズが1km四方とすると 太陽を覆うには1京枚が必要になる

  • Then we need the energy to actually put the parts together and deliver them to their positions around the Sun on

    可能な限りパネルを軽く作ったとしても 1垓(京の1万倍)トンの材料が必要となる

  • top of all that we need to have a permanent infrastructure set up in space to start building

    実際に材料を組み立て、太陽の周辺に運ぶ エネルギーが必要となる

  • let's assume for the purposes of this video that our descendants will take care of that and want to create the mega structure

    何より、建設を始めるには 宇宙に恒久的なインフラ施設が必要となる

  • We can sort the challenges into three main categories

    話を進めるため、我々の子孫がこの巨大な 建造物を作ろうと考えたと仮定しよう

  • materials design and energy


  • To get the vast amounts of raw materials required for our Dyson swarm will have to largely disassemble a whole planet


  • Of the planets available mercury is the best candidate it's the closest to the Sun and very metal-rich

    ダイソン群に必要な原材料を得るためには 惑星1つを丸々分解しなければならないほどだろう

  • close to the Sun

    惑星の中で、太陽に最も近く金属も豊富な 水星が最良の候補となる

  • also


  • Means less moving stuff around and mercury has no atmosphere and only about a third of the surface gravity of Earth making it

    運ぶ労力が少ないということであり 水星は大気がなく重力も地球の3分の1だ

  • comparatively easy to launch material into space


  • Next we should consider the design of our swarm simpler is better

    次に設計を考えると、 よりシンプルなものが良い

  • Conventional solar panels are far too intricate and short lives our satellites need to operate without repairs or intervention for


  • astronomically long times and they need to be cheap to produce


  • But they're most likely going to be enormous mirrors


  • which refocus sunlight to central collecting stations like in concentrated solar power on earth


  • to build and launch them efficiently they must be incredibly light made of little more than polished metal full bound to some supports and


  • Last we need the energy to build and launch the swarm itself taking a part of planets and launching things into space


  • requires an enormous amount of energy for example if we used all the fossil fuels and


  • Uranium on earth and we?


  • Were perfectly efficient we could only launch as much


  • Mass as Mount Everest into space a rather meager accomplishment compared to planetary disassembly


  • To get the energy needed to build a Dyson Sphere it's almost as if you're going to need the power output of a dyson sphere


  • But that's. Ok there's plenty of sunlight to be had on Mercury so let's get to work

    まるでダイソン球を作るために "ダイソン球が必要" と言われるようなものだ

  • Humans are expensive to keep alive and are very sensitive to the environment


  • So, we'd want to automate as much as possible


  • Ideally we'd have a small crew of controllers who oversee an army of autonomous machines doing the actual work


  • There are four major pieces of technology required solar collectors miners refiners and launch equipment


  • the solar collectors are going to give us the energy we need to disassemble the planet


  • To start maybe we deploy something like one square kilometer of them either as mirrors or as traditional solar panels


  • they'll provide the energy to run our miners which strip-mine the surface of the planet and our refiners which extract valuable elements and


  • fabricate them into our swarm satellites


  • to get them into space we need a creative and efficient solution


  • Rockets aren't too expensive and difficult to deorbit and reuse


  • Instead, we'll want to use a sort of railgun a longer


  • Electromagnetic track which launches our satellites at high speeds


  • Our swarm satellites will be packed tight for launch unfurling like an enormous origami once in orbit


  • from this point we can take advantage of


  • exponential growth using the energy of the existing parts of the swarm to build more infrastructure on Mercury and launch new panels faster and faster


  • each panel provides the energy to build another those to work together to build the next to


  • Four become eight eight become 16 and so on


  • within just about 60 doubling times the Sun would be completely surrounded by solar panels and


  • This can happen quickly if a square kilometer of solar collectors takes a month to build we could be done in a decade


  • if only our infrastructure on the planet's surface can keep up with the quickly growing budget of energy


  • Even collecting 1% of the sun's energy is an unbelievable change in our species energy budget


  • We could create the infrastructure to being basically unlimited amounts of energy around the solar system for all sorts of projects


  • colonies on other worlds terraforming planets


  • constructing more mega structures or even traveling to other stars it could be the start of an interstellar


  • Civilization based on physics alone this is not just possible but easy


  • It's such a simple process and such a necessary step for any species to expand beyond their home planet that many astronomers


  • Think there are probably Dyson spheres already out there in the Milky Way we haven't spotted any yet but they could be there


  • it's far from certain that humanity will ever get to this point our attention is too often focused on short-term political gains and


  • Conflicts that will not matter in the long run but if we survive the challenges we've set ourselves


  • we could potentially become the first species in the universe to create a structure with the scope of a star if


  • We? Do it the only limitation left will be our own


  • imagination


  • We've just hit you with a lot of pretty wild claims and crazy concepts if


  • You're like us and enjoy using the power of science to determine absurd ways to destroy stuff


  • you might want to hear how you can come up with something like that yourself


  • Brilliant is a problem-solving website that helps you learn stuff through fun puzzles that split up a complex problem into bite-sized chunks and


  • build up to an interesting conclusion


  • It helps you understand how science works by actually using it instead of just memorizing a bunch of stuff


  • brilliance has tons of interesting courses and puzzles on things like quantum computing astronomy and logic and even dyson sphere's if


  • you visit brilliant org slash nutshell


  • Or click the link in the description you can sign up for free and learn all kinds of things as


  • A bonus for cooks without viewers the first 688 people will, also get 20% off their annual membership


  • with brilliance you can finish each stay a little bit smarter and


  • Just maybe you can help to expand the human species into the universe one day


  • We love dyson sphere's so much that we've also made a poster about them


  • it will look pretty on your wall but


  • Also has some information about the concept of a Dyson Sphere a great way to start a conversation


  • Or you can just stare at it and dream about the future


  • go get it here


Human history is told by the energy we use. At first we had to use our muscles, then we learned to control fire.



動画の操作 ここで「動画」の調整と「字幕」の表示を設定することができます

B1 中級 日本語 ダイソン エネルギー 太陽 惑星 パネル 水星

ダイソンのスフィアを構築する方法 - 究極のメガストラクチャー (How to Build a Dyson Sphere - The Ultimate Megastructure)

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    mommy に公開 2021 年 01 月 14 日