How to Build a Dyson Sphere – The Ultimate Megastructure

by birtanpublished on August 25, 2020

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 at each step we increased our energy

Harvest to a scale never seen before and advanced as a species currently we're slowly transitioning to renewables and if we're lucky fusion energy will become viable in the future as humanity progresses further if we don't destroy

Ourselves or our habitat we will likely gain complete control of our planet's resources 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 ungodly amounts of energy luckily we know where to find it the Sun the ultimate source of energy a furnace 100 quintillion times more powerful than our most efficient nuclear reactor it

Shines with the energy of a trillion nuclear bombs per second so how do we get this energy not some of it all of it if we want to collect the most energy

Physically possible we'll have to build the largest most ambitious structure in the universe the Dyson Sphere a mega structure that encompasses a whole star to capture its power output for an intelligent species building a Dyson

Sphere is a technological leap on a par with the discovery of fire for our ancestors the transition from a planetary species to an interstellar species it would usher in an age of exploration and expansion on a scale we

Can barely imagine so what would it look like a solid shell enveloping the Sun is probably not the way to go a large rigid body like that would be vulnerable to impacts 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 beam it elsewhere such as sward would give humanity basically unlimited energy but

Building it won't be easy the Sun is very big so we need a lot of satellites if 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 then we need the energy to actually put the parts together and deliver them to their positions around the Sun on top of all that we need to have a permanent

Infrastructure set up in space to start building let's assume for the purposes of this video that our descendants will take care of that and want to create the mega structure we can sort the challenges into three main categories

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 close to the Sun also means less moving stuff around and mercury has no atmosphere and only about a third of the surface gravity of Earth making it comparatively easy to launch material into space next we should

Consider the design of our swarm simpler is better 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 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

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