King Weaverbe- Isaac Arthur, the man who sold us the Moon, the Solar System and everything!

100th like.

@@Ari-nw3qy - a bit more than two years after posting, 7.6K likes.

Really though. He’ll be a part of Internet history. An early adopter of the voice/video based Gutenberg revolution. Used it for cool shit

He's now on the Wikipedia list of notable futurists! That said he deserves a lot more recognition cause these videos are amazing

Its probably because the videos are performed in a very present state of mind, where clocktime does not exist, making it joyful and flowfull. Check out eckart tolle and his teaching for more zen and and mindfullness:) Its the best:)

Even videos that I don't think will be interesting end up luring me in and inspiring me!

Nice one!

:D

That is a good one! I like the one we did hear but that's as good. I always have a problem coming up with those intro one-liners since introducing them, I like them but they're hard to come up with.

Have a relevant joke: A philosopher caught a goldfish and it told him it will grant him any one wish if he set it free. He agreed and asked it to build a network of six lane highways between the continents to bring the people of the world together as brothers. The fish said:"Oh come on man, that will take me forever, got any easier requests?" He thought for a while and said:"I want you to explain to me how the female mind works." The fish replied:"How many lanes did you want that highway to have again?"

1503 nemanja True true! NOBODY knows how the female mind works!

lol imagine suddenly a orbital ring pops up in orbit around earth xD

But could you put it in place please with already accelerated wires in it?

the wires are the first part you put in place

Maybe a super reliable rockets that can make trips up and down many many times (like a Volkswagen golf)? At the end of the day the physics of flying a rocket is not so much different than this of driving an internal combustion engine - the only difference is the amount of research used in both technologies.

Nikolay Tanev a rocket would always require at least an order of magnitude more energy than a non-rocket launch system (at large enough scales)

I think we should just use a giant sling shot...

I think if we drill thru the Earth from the poles and use gravity and electromagnetism to accelerate towards the earths magnetic centre and then pass thru it and use electromagnetism to repel the centre to reach orbital speed and beyond.

@@bobinthewest8559 skyhooks and railgun combo is big win you can even add scramjets in middle

Gert Willems does that make man said Dark Lord?

I thought the argument was here: the more rings the better so I guess not. But anyone can have his own idea about this.

Build a ring on Earth, the Moon, Mars, Venus, Mercury, Ganymede, Callisto, Titan, and then one on Europa...? That would be nine, and thanks to entropy we are doomed to die.

Congratulations! You are the nerdiest comment on a nerdy video! You win the day

One for the sun 3 for jupiter uranüs and neptün i skip satürn because i dont think post and long lived like elf do not destroy beuty for gain

That... is actually a strangely appropriate analogy.

Dustin Smith Do my poles look big in this ring?

We don't want to hear about how big your pole is, +luciephilip.

Maybe the best joke I've seen among the many great comments here at SFIA! Many thanks for the excellent laugh, Mr. Smith!

Damn girl, are those space pants...

Stellaris kind of has megastructures... but moving stars isn't something that's all that common. Heck, so many sci-fi franchises, stories, games, etc. don't even take into account the fact that they are already moving.

I think the real problem is capturing the true scale of things, such a game would have an immensely long period of just waiting for your things to get anywhere (Such a game would probably lack FTL) But once you start going, you're likely to snowball wildly out of control, and enter a whole new phase of gameplay as colonies on the fringes of your fledeling empire revolt, and you send immense Siegeships (The term I have for interstellar-capable warships, as such a thing is most likely a titanic behemoth meant to function as a one-ship-fleet for very obvious reasons) hurtling through the void to counter them, explore the larger galaxy and find the ancient remains of dyson swarms, ecumenopoli, star-lifters, and more. Uncover the secrets of the universe, transcend beyond the organic bodies you started with, and ultimately, explore beyond your galaxy, massive probes flying off into the void, extensions of your mind as you set your sights on Andromeda, the Magellanic clouds, and the void itself. Got off on a tangent there, the idea is just so amazing, and I hope for the day that such a game comes into existence.

@@randomnerd4211stellaris

Shawn Barbour see, if we had the rings you'd probably be where you were headed already.

crazyahhkmed What if he was going to the moon? Then it'd still be a day or two.

Shawn Barbour safe travels

AncapFTW as opposed to not even being able to go at all currently?

Lost Desire sure we can. you have 100 million dollars on you, right? I was just pointing out that once we had it, we can travel so much further, it's ridiculous.

yes, would be nice

4X requires conflict, which requires that civilizations can't just spend centuries expanding in their own solar system with no need to fight others.

stellaris has some, but they suck in that game the dyson sphere pisses me off

lordcirth Make it like Pharaoh then

The dyson sphere in stellaris is pretty Op. It gives you 1000 energy which is significantly more than you need even if you have every other megastructure

Yeah its kind of our mid-season climax :)

Drew McTygue he said climax

King Weaverbe he did, but I'm reasonably sure that his mind wasn't in the gutter.

I didn't know Rolls Royce had that good an performance :Ü™

How do the non-equatorial rings work? Wouldn't Earth rotate beneath them, since their angular momentum vectors have to stay fixed?

FarawayWayfarer brilliant

#insertmamajokehere

FarawayWayfarer hahahahahaha

+FarawayWayfarer All the Single Planets...all the Single Planets! All the Single Planets...all the Single Planets!

"'Cause if you like it, then you shoulda put a ring on it" Beyonce - Single ladies So, if humanity likes the earth...

Seriously! I've been listening to everything on soundcloud and I was suuuuper surprised at how great the visuals here were lol

except the broken stars at 24:00 thats hard to look at.

That's not a bug. That's a feature!

Feature for what software? After Effects? It's only the one I could think of.

Blender presumably, I actually screwed that up, a few animations I did don't have the right frame rate for the video's 25 fps, I didn't see that epileptic siezure on them till the video rendered, and we were up against deadlines, so I replaced them all but missed one.

fjdkfjdk I agree on both points, but don't understand the "changing direction every 12 hours". Can you explain? It seems, to me, you'd need lots of solar energy to overcome the magnetic drag. Any extra could actually be used to accelerate the ring even faster. But how do you add momentum to the ring when the shell is being constructed and dragging it slower? Maybe booster rockets could be used temporally. Issac Arthur, a construction description would make a good video!

Calculating the energy required to keep a polar ring fixed to the earth while spinning is somewhat complicated(would earth eventually start spinning end over end? - see angular momentum demonstrations with person on swivel chair and a spinning bike tire), so it's easier to approximate using a lower bound approximation instead. Let's say you have a ring in a polar orbit that is fixed to the earth, and spinning at a fixed speed. Take a snapshot of the angular momentum now, and then take another snapshot 12 hours later. The angular momentum vectors will be facing in opposite directions, because you've had to rotate the ring 180degrees to match earths rotation. Angular momentum is a conserved quantity, so there are no shortcuts. No matter what path you take to get there, the energy you use to move between those two states is going to be greater than or equal to the energy required to completely reverse the direction of a ring that was not spinning. Gyroscopic precession doesn't help much either, because that's driven by gravity acting downward on the whole gyroscope - planets do not start wobbling when they slow down for this reason, unlike a top. As for magnetic drag... what a mathematical can of worms. I'm not sure how to even approximate the drag force, so I'm in the dark. So much depends on the design and materials used for both the ring and the supporting structures. It's a huge problem from a design perspective, but it may be solvable.

If you have a structure housing two separate rings orbiting in opposite directions, then the structure as a whole has no angular momentum, and you should be able to rotate it without that much trouble. Isaac briefly mentions in the video that you want several separate rings, and you want them in opposite directions.

2 electromagnetic rings moving at double the orbital velocity relative to each other extremely close together, I don't see that being a solution, any instability in the ring structure would have them colliding. He doesn't do construction details because most of his recent videos border on LARPing, no technical details, handwavium and rambling prose make up the content, rather than anything scientific or concrete

@@rollieroulston it's pretty simple, you get one ring up first, build a stationary platform capable of holding 2 rings and then set up the second ring orbiting it in the opposite direction of the first.

Thanks, and welcome to the channel!

Speaking of which - regarding the subject of which of Isaac Arthur's themed series makes a good gateway for new viewers- Upward Bound is good - it has pretty animations and a generally more TV show like feel to it it's more practical and less philosophical than the Fermi Paradox shows are - but that said if someone was into psychology I'd totally recommend them. His shows about Aliens are sometime funnier though. I'm still plugging away though so I'll see how I feel once I've completely caught up.

You didn't "discover" shit, we were all here first.

Because media is composed of simple minded people. With about as much scientific interest and competence as a fish.

aserta I mean even Space elevators are outside the mainstream. When the main stream thinks about sci-fi they probably imagine something more like Star Wars.

aserta Hey! That's not very nice! Fish aren't THAT stupid.

I am going to have to work that into some episode, you're the third to make that joke and it still makes me chuckle :)

I seriously hope this is Elon Musk's long term plan. Make Rockets reusable. Start mining stuff in the solar system. Then build an orbital ring. I mean this seems like something you could build similar like the ISS. Build a few thousand standard modules. Stick them together like legos in space. Once you have the ring bring it to the desired speed. It would cost a lot but the benefit would be huge.

My impression was Blue Orgin focusing on earth orbit and Spacex focusing on Mars. If the rockets are really reusable they should be able to launch ring pieces instead of exploring Mars.

just make by any means a base (without humans) on the moon add a pinch of automation and teleoperation of equipment make that happen medium.com/p/robots-replacing-human-in-future-e8de498fb34d and make as many rings as you like.

stefan r You do have to have somewhere to go in order for this to be worth the cost. A mars colony is definitely somewhere to go.

This looks to be a possible concept, the biggest hindrance would probably be material (quantity) and getting that stuff into space so I think Moon + Asteroid Mining would come first this would make materials a lot cheaper than they are currently and would put a lot of materials in space. The thing is we actually have to get space travel with rockets to that point before making this leap. This also avoids and geopolitical concerns that could impact a project like this.

People do, you just don’t hear about them because they’re niche.

Yes! I have no idea how to push these even further. I would really like an episode on the more bizarre ones. Like, what does he drop next? He already told us how to land on the sun and build a civilization in their cores!

+hedgehog3180 unfortunately you can't use earth's magnetic field as an object to push off of. You can create impulse using it, that's true, but you can't float on it.

We will get to space trash eventually, I've enjoyed upward bound but I kinda want to get back to the further future and Fermi Paradox topics, they've been getting a bit neglected with our focus here.

Catwow lofstrom loop

And if we spun it slightly faster than orbital velocity we could literally INCREASE tension across the planet.

I sure spun up some pun there! No? Okay I'll go away.

pered5 ok see you next time around

4 more times

join FB

Molb0rg I deleted my Facebook account a few years ago.

yeah, then more search trough comments, good people they still there, maybe reddit or create thread on 4chan, post there a link, i would like to participate ))

It would need to be a large ring. Like far larger than shown. In fact, you'd need multiple. Besides why just the ring. You could put people on rotating habitats in higher orbit of the earth, moon and further if space become an issue.

we should say Arthursday instead of thuesday

me too

I only hit the like button on two of them. I thought I was liking the series. Guess I'll have to watch them again and hit the button this time!

kraken1122 your thumbnail had me blowing on then rubbing my screen thinking it was an eyelash..... if that was your intention, well played.

Shaun Husain Me too.

I spent about ten seconds trying to get it off my laptop screen lol! Then I scrolled down and felt a little silly as the thumbnail moved with it...

CSX 6400 The amazing thing here is that you don't know that. The technology required to build these already exists, and if the average lifespan continues to grow, you might actually see it.

Well it might be possible but it unfortunately is not very likely. I do hope I get to witness conventional spaceflight (with rockets and stuff) really take of though.

you mean, like the space astronauts going to the moon next year? I am hopefull for seeing that take off long, LONG before I die, and also probably a (small) permanent moon and/or mars base. :)

Probably could be done by using atmosphere, like water anchor. However, yes one of the unnecessary problems.

Yes, I've been wondering that too. Keeping an inclined ring stationary with respect to the planet's surface would require continuously changing the plane of the orbit. That requires applying a lot of force very carefully.

+Kevin Smith may be actually and advantage, to accelerate the rotor, extract energy from Earth rotating.

I wondered about that one, too, then I realized that the cable is on a multi-axis orbit, and the maglev track is just floating.

It'll just rotate with the Earth... might be a bit dangerous though when first being set up.

Kevlar, Zylon, carbon fibre or carbon nanotubes

If you want to know more about this real engineering went into a lot of depth about materials that could do this basing it off of a research paper and building upon those ideas

Correct, however, it is an overimplifyed visual representation of possible engineering solution.

Active support platforms on the other hand, what with there relatively small scale are reasonably realistic.

"small scale" Watch Cody's Lab tay pie video - the same end - timelapse. The main problem with active structures is reliability, not the scale, as for my opinion. It is possible to make them reliable, but we do not have that tech yet.

I thought I was the only one lol

that's an awesome idea!

Just build a shellworld over Venus. I'll build my own planet! With blackjack! And hookers! Okay, no blackjack and hookers, but definitely a new planet! (Actually, it is Venus, so maybe the occasional... well, nevermind)

We probably will

Isaac Arthur various types? Like natural and artificial (borg or something)

Someone 1282 that's a great idea! Hive minds have always interested me, and I'm curious how one would have to adapt if one were to spread to the interstellar scale

Someone 1282 If you like that idea, you may have read, or would like to read Peter Hamilton's Commonwealth series. Terrifying hive minds! en.m.wikipedia.org/wiki/Commonwealth_Saga

How about hive minds that aren't bad guys? Instead of _Star Trek_'s "bionic zombies" they could be... IDK, gods or something. They'd probably seem pretty godlike to us.

Fick Dich probably some flat earther

oh yeah right... always forget those people even exist - thx for the sad reminder

There are, also, the people who call humanity cancer and want us all to stay on Earth and die. We can't forget the luddites who just hate technology more advanced than the 18th century; although, that would be a little ironic if the disliked the video.

Thats actually a really good point

Could be a sloppy mouse. On touch screens you can accidentally click something when you are trying to scroll down. On laptops you can hit the mousepad with a palm when you are trying to type.

Split Second Science And span many national borders... I wonder if the geopolitical issues or the engineering issues are bigger?

So many Gundam shows are more realistic than they have any right to be.

As I recall you just stick a ton of gargoyles on the side of the ship to scare the other demons away.

Isaac Arthur I think Mars has a big ring on it in 40k, though it might just use some sort of space magic to stay up.

They're phenomenally expensive basically. It's like a freeway or train line, they save you money if your cargo needs are high enough but right now building one would be like building a non-stop bullet train line from Nome Alaska to Greenland.

I understand how expensive they are, and I certainly wouldn't expect the construction of one to happen very quickly, but the benefits of having such inexpensive access to space are worth so much more to the economy than the cost of the first ring. The industrial applications of zero G manufacturing alone are worth the investment, not to mention the possible advances in medicine and the biology of space travel. Then, of course, comes the easy access to the easy to harvest (once you get the infrastructure) asteroid belt and the potential bonanza of rare metals. I guess in my mind the benefits far outweigh the initial, albeit enormous, cost of construction.

James Burleson Nobody is fighting over oil (yet), what are you talking about?

+James Burleson, someone in the group shares a story of his conversation with one of the politics, do not recall the details but the result was the reaction of the Politic guy - wow, that's interesting. Do not overestimate them(and they write checks btw) they get the knowledge mostly from wishes of the public, so before they will vote for it as for a good idea, the general public should have the notion that it is a good idea.(not entirely so, but as rough picture) Also, reliability is an important factor here. Until we can't build them reliable, and prove that we can do them reliable it will be a dangerous enterprise. However space can give us a lot, even before rings or anything else which might replace rockets, reusability is a very good step which opens a lot of perspectives and allows to begin to build big after establishing manufacturing infrastructure on the moon and in space, and it allows to establish them.

James Burleson Airspace violations? I feel like just unilaterally building one of these things would get you some heat.

or what if you can use said space junk, and build part of the ring with it :D

That's why 80 km is nice: there's still enough atmosphere to protect against most space debris

+Paul Aldrich Well then, I always wanted to clean the orbit up, maybe it's time to start a company devoted to that.

Stuff doesn't stay on Low Earth Orbit for long, there is still some atmospheric drag there.