Spaceports

[@cannonfodder4376]

It always puzzled me how everyone is talking about going to the moon and Mars, but never talks about the importance of Space Stations/Ports. Glad to see you tackle this subject in your comprehensive style. I have learned so much from this magical video. Wonderful as always.

[@mjk9388]

I totally agree with you. It seems to me that, once up in space, you'd want to stay away from gravity wells entirely to save fuel costs. We just spent a HUGE amount of energy leaving Earth's gravity and the first thing we want to do is to get to another gravity well? You can get all the resources you need from asteroids and have all the orbital infrastructure to refine those metals and build things, much like what was displayed with the Gateway orbital assembly design described in the video. I think the only value in a colony on the moon or mars is to gain the science and engineering skills that would come with such an endeavor (would they be different?), but, if you're just interested in inexpensive living space, orbital habits seem to be the way to go from a cost/energy perspective. I admit, though, that maybe I'm not understanding a key point with the Moon or Mars Colonies. Musk is a smart guy, so I'm thinking he understands a key aspect of building a Mars Colony that I'm just not getting. Maybe Isaac or someone can explain it to me? I'm really curious to know.

[@stefanr8232]

Isaac is on the record saying that the planets will be disassembled to manufacture orbital habitats. Elon Musk is building cheap rockets. SpaceX has stated that it does not intend to dictate mission plans to passengers. If you charter a flight they will launch you to your destination. Elon Musk has succeeded in rallying public interest. He did that by talking about a mission to Mars. In order to get to Mars you have to live in space for years. Developing the technology needed for the Mars mission will also be technology for inhabiting space. The Falcon Heavy launched Elon Musk's car into orbit. It is not going to crash into Mars. Not sure if that is an indicator of something.

[@asleyicegold4789]

Google new swabia.and operation high jump

[@cjk_02221]

Cannonfodder43 i was like WHAT ABOUT ROTATING HABITATS

[@richardbigouette3651]

You should check out Planetary Resources and Moon Express. They understand the great need for such stations.

[@UpcycleElectronics]

This channel needs a few billion subs to accelerate future. I want to see humanity's first space station before my time is up.

[@fleiteh]

Upcycle Electronics I want life extension, or mind upload before my time is up 🙃

[@commode7x]

I want to extend the life of humanity before humanity's time is up.

[@itslivefromdc]

commode7x how long? I mean is 150 years enough? Who gets to become old?

[@UpcycleElectronics]

Peter Hutt-Sierra *Casino ;-p

[@Bobby90]

Usually its whoever can afford whatever method chosen/possible. Legalizes aside. Also, commode7x is means more in regard to humanity as a whole rather than one person.

[@arnaldo8681]

isaac arthur just made me watch a 26 minutes comercial. and enjoy it

[@KrawmKruach]

yeah no kidding right, a 26 minute long infomercial for another company and i love it.

[@NathanGrass]

You can shorten the commercial to about 20 minutes when watching at 1.25 speed. This way you can fit in more commercials in a day.

[@chrisf2636]

All of his stuff is a commercial for companies and tech that don’t exist on the scale he’s discussing. I love it.

[@beowulf2772]

What wizardry is this?

[@Masternuckable]

For a scam, no less.

[@km5405]

lets hope the station AI wont refuse to open the pod bay doors.

[@eoh05]

kzbin.info/www/bejne/gJbTfImLrtJsfMk

[@leofroeman6459]

+Isaac Arthur Where can I get a hold of the written script to read? Audio doesn't posses the say information absorption efficiency as reading words in a paragraph does for me, not just Closed Captions.

[@annoyed707]

Down on Earth, marginal meat intelligences are directing pods (of laudry detergent) down the pod bay doors in their faces.

[@Arterexius]

@@eoh05 Dude, that's fucking hilarious! xD

[@NathanGrass]

I'm sorry Dave.

[@jetflaque8187]

This is why I don't have a television anymore. Its completely redundant. why pay for mediocre Discovery channel & National Geographic shows when they pale in comparison to what I find on this channel?

[@gyssedk]

You are completely right. The information crammed in to every one of his videos are way beyond what you find on the channels you mentioned. And I sometimes wonder why no one buys his or similar channels videoes.

[@Lukegear]

I sad the same thing just last week. It's really a common situation :)

[@marcosmillet7957]

I love Isaacs content as much as everyone else, but really? I love both of them channels :-(

[@zuro2913]

I completely agree, tv has nothing to offer that the internet can't do aswell. Television is outdated and will become more like just being on the internet.

[@kitcarson8027]

I also don't have cable or satellite, but for me its because I am so much more productive without it.

[@krissisk4163]

You know it's not often you tackle something close enough on the horizon that I might actually get to see it realized someday. Now I'm excited to see this happen.

[@bobinthewest8559]

Wow… 5y old comment 😊 5 years can seem like a long time, or like the blink of an eye. The difference lies in the changes that take place in the interim. Some of these things are being talked about today… WITHOUT any snickers or scoffing, etc. Meaning that we’re actually having conversations that begin with the question, “Okay, how could this actually be done?”

[@zekefartin409]

Please never stop making videos.

[@DanielDSizemore2]

Zeke Fartin ikr, luv these vids!!!

[@giarnovanzeijl399]

That's only an option if Isaac gets his brain downloaded.

[@chrissnyder2091]

Consider my situation having grown up through the 60s, '70s and the '80s and enjoying the plethora of science fiction stories generated through that time. As well as watching the development of our space technology at this point I'm way too old, I know I'll never make it off this rock but I hope someday my grandson has that opportunity.

[@karloss909]

I have been up since 3 am, it's almost 8 pm now, time to go to... *New video by Isaac Arthur* ... Who needs sleep anyway.

[@12201185234]

At least this is a short video... Well, short for SFIA...

[@wiretom]

Who said rocknroll was dead eh? 😁🤣👌 Peace

[@leofroeman6459]

+Isaac Arthur Where can I get a hold of the written script to read? Audio doesn't posses the say information absorption efficiency as reading words in a paragraph does for me, not just Closed Captions.

[@alexoscom]

Just ruined 111 likes

[@durellnelson2641]

Sleep is for the WEAK!!!!

[@Whipster-Old]

If we crack fusion within the next decade or so, this sort of thing becomes even more possible. Awesome video, Isaac.

[@fleiteh]

It would be nice if inner ring, which simulates different gravity for training, wasn't in a fixed position inside the station. It could be connected off to the side of the center from the main structure. And it doesn't even have to be a ring - it could just as well be 2 containers on opposing sides from the middle for even weight redistribution while rotating. Those containers could be on rail system that moves them closer in, or further out depending on which moon or planet's gravity is needed to simulate.

[@mongevoador]

I was used to coming here at night and being the 100th to give it a thumbs up. Now I'm the 2000th, and I'm so happy for that!

[@jarredeagley1748]

Never heard about that modular station concept! Looks incredible! Also, upward bound is the coolest series on KZbin.

[@Soppybobs]

Jarred Eagley kinda like the modular interstellar spacecraft called the endurance in the movie interstellar. Just a huge port version.

[@steriopticon2687]

This is (one of ?) your best videos! Of course the 'Upward Bound' intro helps a lot. Thank you.

[@TheAprone]

I have to agree. I enjoyed this video more than most. I can't really put my finger on why that is... but at multiple points during the video I was very aware that this one was special.

[@burns9281]

i personnally like the ship unity series the best, but ofcourse this is good as well

[@PenneyThoughts]

Agreed, one of the best yet and I've seen them all (I think). Excellent work Isaac!

[@SomeKindaSpy]

Watching your channel always makes me so happy. I'm filled with hope for the future.

[@ivx8345]

TRUE

[@ayushsharma9270]

I will always love your videos, they are the definition of quality content!

[@FonVegen]

Is there just something about the name Isaac that makes the people having that name awesome and related to space? Isaac Newton, Isaac Asimov, Isaac Clarke (fictional, but still), Isaac Arthur...

[@stefanr8232]

The original Isaac dug wells.

[@TTheDDoctor]

Sounds like a good name to give to your firstborn son.

[@leiffitzsimmonsfrey1272]

And Arthur C. Clarke. I actually thought "Isaac Arthur" was a pseudonym, because of the two famous names.

[@terrynielsen4832]

I had the same suspicion. Arthur C. Clarke and Isaac Asimov were my favorite authors from the time I discovered them in the late 1950s until Dandridge M. Cole, Gerard K. O'Neill, Larry Niven, and several others came along that I liked as much.

[@ronschlorff7089]

easy peasy, given a choice (without the family pressure to name after a "beloved relative") no parent wants to name their son after some average nobody in History, "space-case" or otherwise. It started with Sir Isaac Newton, not some average nobody; I think we can agree!

[@2014andBeyonD]

There are not many KZbin channels where I look some much foreward to a new upload like this one.

[@defexorcist]

Got here as soon as I could, Lord Arthur. I had to wait for the right time to be awake and attentive enough to properly enjoy your excellent vids! Thanks again!

[@generalzod8713]

Probably my favorite KZbin channel.

[@Spartan265]

Found your channel recently and have been binge watching videos the past few days. Love the content. Old stuff and newer stuff. It's all excellent and well presented.

[@ProSimex84]

"oooohhh new Isaac Arthur video" -plugs in kettle

[@thepepper191]

ProSimex84 lol why would your kettle not be plugged in? - Sincerely a British person

[@ProSimex84]

limited power outlets

[@thepepper191]

ProSimex84 In Britain, kettles are always plugged in 😂

[@ProSimex84]

well laa tee daa mr fancy pants with your ample wall plugs and kettles with on/off switches! I guess us mere colonials up here in Canada just dont know how to live! ;)

[@thepepper191]

ProSimex84 it could be worse, at least you have kettles in your houses unlike your southern neighbours ;P

[@joshuaginoza9446]

I went back pretty far in the postings from here and the production quality is on a completely different level. There is no reason this couldn't be a weekly Science/Discovery channel show. Keep it up battle!

[@Up8Y]

Well, Musk needs to park that Tesla somewhere.

[@eclipseslayer98]

And I hear that it will be back to Earth in a few years before finally departing forever.

[@charadremur333]

@@eclipseslayer98 catch it

[@eclipseslayer98]

@@charadremur333 I don't think my catcher's mitt can withstand orbital entries.

[@lolsflint7598]

@@eclipseslayer98 make a better one then.

[@tuhmater2985]

@@eclipseslayer98 Yeah it’s really not that hard

[@ScriptureFirst]

thank you for the crisp thoughtfulness of your scripts, the completer omission of superfluous mouthy sounds like breathing & sighing, & for the continuous cadence without excess ado. you are a model.

[@TheBurgerkrieg]

We need to get you on Joe Rogan my dude, that would be an amazing podcast inspiring potentially millions.

[@isaacarthurSFIA]

Ya know, that's a very common suggestion I get at least once a month. I don't really know his show though, I just know him form the old NewsRadio days, loved that show.

[@TheBurgerkrieg]

You're exactly the type of guest that would blow his mind and the minds of his audience.

[@nandodando9695]

Yes, he's nice and would be an accepting audience receptive to this sort of futurism. I feel our education systems should be aimed at enabling your view of the future.

[@asdasdd12]

Access to more viewers on Joe Rogan widens the conversation, shortens the time to actual implementation of ideas. I really want to be in a position to be able to afford a trip up there!! Chop chop, no time like the present!!!!

[@asdasdd12]

On a side note, your accent is great. I could listen to you all day

[@avanconia]

The chemistry and geology Channel Cody's lab needs someone to go to bat for them with KZbin, the automatic flagging system keeps giving him strikes for perfectly reasonable science videos using standard formulas. If you have any human contact with KZbin, please mention this to them.

[@isaacarthurSFIA]

Yeah I mentioned it over on my FB group, it's just disgusting the way they're treating Cody

[@Blowfeld20k]

Lol ... content creators having "Human contact" with youtube ........Thats NOT how KZbin operates.

[@lvl10cooking]

It is absurd. He is a nice guy and has a lot of interesting videos and teaches better than at least half of the teachers in public schools. The videos that are flagged are innocuous, and there are a lot worse out there that are monetized even...

[@johnpossum556]

I don't approve of the way they treat him but apparently Cody needs to understand how & why these forces work in order to try to get ahead. This is a SOCIAL media platform after all. Sometimes it seems like he is just asking for it.... like when HE posted the link to the exploding grasshopper in his fruitflies in the microwave video comments section. He's damning himself. I'm not one of them but there are a lot of PETA folks out there rampaging around like their moral values MUST be yours. If I were him I'd also shut up about the 12018 year thing because it fundamentally seems to go against religions. Getting something DONE is about giving people as few reasons to go against you as possible. Either that or he had better read some books so he is using these known disruptions as processes and methodologies for getting ahead. ( like trump does! Note how he started attacking hispanics and later had MANY of them voting him into office. He gets the PROCESS. ) He may be smart as an individual but very dumb as a team player. He'd probably know what I am talking about if instead of cross country running he did baseball or basketball. It's a whole different thing. Just my 2 cents of constructive criticism. For whatever its worth I did start an account on the reddit yesterday just to try to help him out. I don't really like or get the reddit, though.

[@yasoum9286]

avanconia who is cody

[@JulianDanzerHAL9001]

zero and low gravity sport might be quite an income source - especially when broadcast live to earth - though I'd love to open a minigolf course in 1/10 G

[@Tonatsi]

Julian Danzer I get the feeling golf won’t be a sport in space.. Imagine shooting a golf ball through the Hull 😋

[@urekh]

Ooooo we could make the battlefield in Ender’s Game

[@InsanoBinLooney]

I want to see a kickboxing match in zero G

[@SailorBarsoom]

I invent space sports as a hobby. If'n I had Isaac Arthur's talent (which'n I don't), I'd have a channel for it.

[@DanielDSizemore2]

Julian Danzer Apollo 14 astronaut Alan Shepard hit a golf ball on the moon, first was a dud but second shot he said “it looked like it went miles and miles” probably not that far but best estimates put that a perfectly hit golf ball and at the perfect degree would send it 2.5 miles. Alan’s didn’t go that far but well over a mile. Nothing “mini” about that and that’s at the moons low surface gravity, in lower earth orbit it would be even less which would go even farther. That would have to be one big course. But I’m in 😂🤣😂🤣

[@long-timelistenerfirst-t-us2yy]

the lottery ... it's not "gambling", it's selling _hope_ for a dollar ;-)

[@munstrumridcully]

_grandma plays the numbers_ ;)

[@InquisitorThomas]

Thoughts on the recent SpaceX launch?

[@isaacarthurSFIA]

Just generally impressed, not too surprised, not a perfect launch but over all good and supports m comments early in the episode about hitting that snowball point for space travel

[@MAD-SKILLZ]

I laughed hysterically seeing Starman in the driver's seat of that car above the Earth. I just can't believe how much we've progressed as a species. So much so that commercial companies can afford to pull such childish stunts. Every time one of these advancements breaks through, I imagine myself having a conversation about it with my grandmother, who grew up in a world where electricity was a luxury commodity, and who now lives in such a (average) luxury. It's just plain funny and exciting.

[@kitcarson8027]

We watched the Launch live in our offices. That was in my opinion the most epic launch year to date in the 21st century. Although I am very disappointed we haven't seen video footage of the Center Core (turned ICBM) ballistic 300mph landing. As Elon said, it will be one for the blooper reels.

[@Ibike007]

Kit Carson Seeing those 2 outer rockets landing pretty much in sync was quite jawdropping for me!

[@HungryGuyStories]

As I was watching the launch, I couldn't help thinking if aliens come to the solar system in a billion years or so from now, they're gonna find a *_car_* in orbit and ask themselves, _"What were those humans smoking?!?!"_

[@ralphmoore8710]

The video is awesome and the following posts / discussions are the icing on the cake. Thank you all.

[@memecommandomike4659]

Just seeing this in my notifications makes my day. Time to go get a snack and something to drink!

[@Cerpa912]

Ditto! Just put a smile on my face seeing it there

[@yfructose]

So true. We love you, Isaac!

[@Jiffythesquirrel]

Smoke a fat joint and then try to understand his accent

[@FlaminPigz7]

What a time to be alive! Be thankful folks, we are on the verge of a technological revolution!

[@Qwartic]

Awesome video, Isaac! One your best yet!

[@LevEakins1]

I can't tell you enough, how satisfying and awesome it is to watch your videos. I'm so inspired by how much vision you have of a progressive version of humanity reaching for the stars. It's freaking awesome!!

[@craigcorson3036]

Congratulations, Mr. Arthur. Apart from humble self, you are the first person I know of to whom it has occurred that multiple-ringed (multiple levels of 'gravity') toroidal space stations are possible, and highly desirable. Not Noordung, not Oberth, not von Braun, not Clarke or Kubrick - nobody that I know of has considered that the space between the hub and the outermost ring can be put to very good use. Now I'll be waiting to see how long it will take someone else to see that the rings can be extended along the axis of rotation to form a cylinder of any desired length. A proper space station should look not like a doughnut, but a series of concentric pipes.

[@NoXion100]

I was just thinking towards the end, that one could still extend the station further along its axis of rotation. I wonder how long it could feasibly get?

[@twirlipofthemists3201]

Possible yes, even unavoidable, and (cough) pretty obvious... But why desirable??

[@twirlipofthemists3201]

Craig Corson You can't just extend the axis indefinitely. It's not stable. Torque and shear are worse. Tubes are worse than rings and barrels.

[@craigcorson3036]

Jim Fupanda Did you not watch the video? THAT is why desirable. You could have a lunar gravity area, a Martian gravity area, and anything in between those, and Earth gravity. And as for obvious, it wasn't so obvious to von Braun or Oberth, was it? It's only obvious once someone else has thought of it for you.

[@jasontoddman7265]

I'm pretty sure O'Neill once came up with the concept, as I clearly recall hearing of such a thing decades ago in a book of his about establishing space stations at "L-5 by (19)95". Isaac Asimov also mentioned such a possibility in one of his science treatises. Heinlein also included the concept in some of his works.

[@Mushroom1882]

Nothing like waking up to Isaac Arthur with coffee every Thursday. :D

[@Hepad_]

This channel needs to snowball.

[@DarrinBell]

It is. I was here when there were only 5k subscribers, and that was just a year or so ago (or at least it feels like it). Mark my words, it'll be 1 million by this time next year.

[@strategicthinker8899]

That's racist. Snowballs are white. It needs to charcoal.

[@PalimpsestProd]

Darrin Bell - LOL I think I said this about a year ago. I assume that only 5% of people are interested in this sort of content and of those a substantial % are more concerned with practical things that can be done within 5 years not "maybe in 50 years". If you want a million subs start an X-Prize style channel that directly connects (interviews, soapbox) space industry companies with real-world in the now projects, to engineering students and retired engineers, to patreon / kickstarter, to enthusiasts with money. How many google, apple, microsoft millionaires are out there looking for the next "cool" thing or profit margin?

[@DarrinBell]

PalimpsestProd Those are good ideas. But I think the potential audience for what he’s doing right now is larger than your estimate. I subscribe to about half a dozen “science popularizer” channels like this one, and some of those have more than 1 mil subscribers. In my book the only advantage they have over his channel is they’re a few years older. Isaac posted a video celebrating 100k subscribers 7 months ago (mentioning it had been almost a year since his first video), and he’s already close to doubling that. kzbin.info/www/bejne/i4awo4dshsaGgcU ....I could be wrong, but I think he’s got a shot.

[@krissisk4163]

I think it already has. I'm not sure when I first came across the channel (and almost instantly subscribed), but there were only 2-3k subscribers at the time. That couldn't have been more than a couple years ago and I'll bet there will be 200k by the end of the month.

[@davidturpin9135]

One of the beauties of building in space is how easy the welding is. No argon needed... You can even do away with filler wire and just electron weld everything. Even difficult metals like TiBe would be easy... Vacuum welding would be a dream come true for most boilermakers and hull techs.

[@sergio7248]

Aaarrrrrggghhh that small welding robot not getting to the corners is killing meee!!! I can't be the only one!

[@frederickjohnpicarello1909]

The television is fine so long as we are able to watch whatever we want on demand...like this channel..

[@Edenssunlight]

Hmm... Looks like Somebody is about to Rocket through the 200k mark this week!! Congrats Isaac!! Well deserved!! And as always, thank you.. Liked & shared!!

[@isaacarthurSFIA]

Thanks! Yeah we gained a fair few from the Collab with Curious Droid last week and an unexpected but very welcome plug from PBS Spacetime, so we're celebrating 250k instead as I wasn't expecting to hit 200k till March and hadn't written a celebratory episode yet. :)

[@gravity_well5627]

great channel and great intro music

[@deltaalien1]

Almost at 200k Issac Glad to know that your channel is getting the attention it deserves.

[@FastEddieNelson]

"If you build it, they will come" Love your channel. Just discovered it and am going through the videos. Straight to the point, no mumbo jumbo and a great sense of humor. Keep'em comin'!!

[@linz8291]

If we build it, terraformed extroplanets are our new homes.

[@miserychickadee]

Damn, that was a _sexy_ intro, dude. I regret skipping your Upward Bound series, in the past.

[@cpypcy]

Almost 200k subs. Future can't be stopped. Can't stop watching. Everytime I can I try to share his videos for others to see. It really expands your out of the box thinking when you watch Isaac's videos.

[@David-zy1lr]

Happy Arthursday!

[@burns9281]

i just got back from the dentist so i dont know if it is a happy arthursday or not

[@David-zy1lr]

Well at least now you have something to lighten your mood

[@burns9281]

i guess you cant have happiness without pain

[@David-zy1lr]

True true!

[@98of99]

Great minds like Isaac Arthur are now given the venue and funding to create mind blowing content for the world to see. No large studio budgets, no media empires, just a brilliant mind sharing their insights to the world. Love what you do Isaac, thank you!

[@thatangrygerman2076]

Hey Isaac. I love your videos. I found your channel about a week ago through my recommended videos and love the way how you make rea physics and mathematics as exciting as science fiction. I plan on studying physics and aerospace engineering after my apprenticeship, hoping to be part of the technologies you are presenting in your videos. Keep up what youre doing, much love from across the pond!

[@enlightedjedi]

Zero gravity elephants are a very funny concept :)!

[@stefanr8232]

Do elephants have a sense of humor?

[@henrymach]

I believe they're called whales

[@enlightedjedi]

@stefan r After trying to enter in "a bar" they do :)!

[@enlightedjedi]

@diamened I think those are elephants under pressure :)!

[@FEEAR1000]

I love all the different spaceports on here! Space and sci fi is my favorite

[@XxTheREDRUM1xX]

The upward bound series is my favorite, and ofcourse...the epiiiic intro music!!!!!! If we do away with profit and build for happiness..it would be easy to move out into space.

[@Sir_Budginton]

My favourite bit of the intro is when the engines on the space shuttle throttle up.

[@ByronAgain]

Love the channel. Enjoying it a great deal. A person injures themselves "by accident" - you mean. We do things 'on purpose', we never do things 'on accident'.

[@peterxyz3541]

Highlight of Thursday... "It must be Thursday. I can never get the hang of Thursdays". I feel your channel is like a "Common Man/Persons" Cosmos. High quality information with a decent visual component without the backing of a either PBS nor Seth MacFarlane. I just read... there is a "SECOND" season of Cosmos....... WTF?! Sagan's the FIRST, NdGTyson is the SECOND, the new one will be the third.

[@leofroeman6459]

+Isaac Arthur Where can I get a hold of the written script to read? Audio doesn't posses the say information absorption efficiency as reading words in a paragraph does for me, not just Closed Captions.

[@Drizzleize]

Isaac blows cosmos out of the water. The new one spends all of its time shaming anti-intellectuals who aren't even watching.

[@peterxyz3541]

Drizzleize As traditionally humble replies goes, i imagine Issac's reply would be just as humble and respectful "I'm only standing on shoulders of giants like Newton, Kepler, Carl Sagan". Carl Sagan in the late 70s with the original Cosmos, brought physics and evolution to the masses. Sagan appeared on Johnny Carson.

[@kirkjacobson8457]

A couple years running and still the best channel on KZbin. Keep up the good work!

[@Ryukachoo]

A D R I N K A N D A S N A C K

[@CozyHi]

Ryukachoo *applies for Isaac Arthur Industries* Interviewer: so what have you brought with you? Me: my CV, portfolio and my degree Interviewer: But do you have A D R I N K. A N D. A. S N A C K ?

[@nucflashevent]

Me: yes Interviewer: Good. You'll need it them A S. I. K I C K. Y O U R. A S S. O U T :D

[@mazh40]

CozyHi marklplaals

[@LouisMace]

I love these episodes about what mankind can do pretty much with current technology. A science fiction fan's dream! Thank you Isaac.

[@jamesfra1311]

I don't wanna live on this planet anymore, blast me off to orbit Mr. Arthur.

[@axehammer3850]

Isaac Arthur. Thank you for your work. I had to subscribe and hit the bell. Enlighten the people, bring light to the world.

[@leranthalas]

Maybe the simple solution to the Fermi paradox is that life is only possible in a very specific gravity? Great video, as always! So excited to see that there are viable plans for large space stations already in motion.

[@isaacarthurSFIA]

I do tend to bet the range of planets for complex and long term life is pretty narrow, though I'd also bet it's freakishly broad for simple life.

[@dfiala9890]

That would fall into the class of "Great Filter" arguments. Isaac has a great episode on this.

[@twirlipofthemists3201]

Aksel Stridh But there are countless millions of earth-sized worlds, and if there are any civs, then supposedly, according to the paradox, we should see them. The Fermi Paradox has two flaws, imo. One is, it assumes that civs would expand to fill the galaxy, and AFAIK there's no basis for that assumption. I kinda assume they will stay small, maybe a few light years radius or maybe a few hundred. The other is assuming that they are missing in the first place. (Where is everyone?) We assumed that before we even began the search. And we still havent even begun, really. For all we know there could be aliens right next door.

[@leranthalas]

D Fiala : yes, it would absolutely be a great filter. :) Thanks for the tip about the video. I fear I’m one of those who already have watched everything and now just exist in the void between thursdays. :p Mr. Arthur: I agree. Simple life is probably abundant, but higher evolution is probably rare. The obstacles to become a truly spacefaring species are astronomical, if you’ll excuse my pun.

[@redcommando1]

I'm fed up hearing about the fermi fucking paradox. Our wonderful cutting edge tech and radio signals can't find anything so ETI is scarce or non existent? we haven't discovered a Dyson Sphere so ETI is scarce or non existent? I understand that complexed life here on Earth was a difficult process but we really don't know shit.

[@tanostrelok2323]

This is the first time I get so excited for one of your videos, something that we might see in our lifetime is... I can't find the words for it.

[@MrFancyFingers]

I want to hibernate for 100 years so I can actually see this happen. Another great video.

[@hyper9374]

Maybe the Kessler Syndrome is what causes the Fermi Paradox. As we've found, space travel and development is hard and expensive ; while other technologies like transport and telecomunications develop quickly, space development has been relatively stagnant for several decades. Maybe alien civilizations get stuck in their planet because of their failures in spacial technology. I don't know, just a thought that crossed my mind.

[@kitcarson8027]

As we will find out in an upcoming episode were Kessler is covered in some detail. Kessler syndrome is a temporary problem to an advanced society such as our own.

[@tfisher200]

On the timescales being discussed the Kessler Syndrome just isn't an issue for the Fermi Paradox. Even the worst sort of Kessler event wouldn't close down LEO for very long, and cleaning debris in upper orbits is fairly straightforward. Kessler Syndrome is a temporary economic/military setback, not an end state.

[@julia970y6v]

Or perhaps the Fermi Paradox is solved by the simple solution that space travel is not necessary for a civilization to thrive; in fact it is a huge and extremely impractical investment. I think it's safe to assume everything on this channel is just science fiction at best.

[@SlippyFox1]

I thumbs up before I even watch the video. I just know its going to be good!

[@randyalleyn8372]

That makes two of us!

[@grumpusmaximus9446]

I love these videos. I was 10yrs. old when I watched the first manned moon landing. My hope and enthusiasm that we as a people would explore space well beyond Earth, diminished as the decades passed. However videos like these and the recent SpaceX achievements does put a nice shine back on hope.

[@gem3020]

I love these videos!! Happy Arthursday everyone! Isaac, great work and fantastic content as always!

[@jamesanaya9772]

Recently started watching this channel, and this video has already become my favorite, just because it makes me more hopeful that I will be able to make it into space!

[@henrymach]

And... zero gravity porn. Never underestimate the power of porn.

[@phesterful]

well, that's one response to "space is boring".

[@triularity]

I've heard it said that porn is what won the VHS vs BetaMax war.

[@UsurpersAndAssassins]

You know. I was just thinking the same thing. Zero gravity porn would bring in a lot of money - and the space station could be funded by a "future of porn" campaign.

[@CorwynGC]

@@Faygo2215 Are you seriously suggesting that people won't be interested in porn in which people are strapped together? Turn off 'safe search' and get enlightened...

[@nicboo9191]

porn hub tried to crowdfund a sexploration space program, their goal was 3.4 million but only raised about 230 000$. someday....maybe.....

[@SolarWingXI]

Subscribing to this channel was the best thing I've ever done

[@KRAFTOMEEZY]

i wish i could get this everyday! great material!

[@asdasdd12]

I love it. The more conversation and volunteering reduces the time it will take to get these ideas into physical form. Great Video!

[@nickfelten5068]

I love the animations. I would like to contribute

[@isaacarthurSFIA]

Awesome, there's a link in the vid description to join up with Gateway and since Kit was trying to 'borrow' some of the SFIA animators I know he'd be grateful for any help.

[@nickfelten5068]

Basically, I ment I would like to contribiute to with animations to your videos (I did't realized at that point, the animations were from Gateway itself).

[@nqvy_4546]

I really hope the gateway foundation's plans come through! I would love to see this station existing, even though I could never afford to go there (: You have earned my subscription!

[@bitemyshinymetalass7393]

a beautifl night.. and it keeps getting better and better Thank you so much for awesome videos Isaac.

[@EdisonDiBlasi]

The animation at the very beginning gave me chills, then I heard a familiar voice begin a story... I love these videos.

[@MM-ge2lc]

"If you build it, they will come." That one gave me a chuckle.

[@krazylevin]

I just discovered this channel...and it's exactly what I have been looking for.

[@shronemor]

Loving your channel Arthur 200k plus subs here you come... ------- When it comes to Space Stations I'd like to see a Babylon 5 type station (an 8k O'Neill Cylinder) a Proper self sustaining Space Port in Orbit at the Earth-Moon lagrange point

[@isaacarthurSFIA]

Oh yes, I'd really love to live to see an O'Neill get built, but anything that scale will probably not arrive until after orbital travel has become a bit mundane

[@twirlipofthemists3201]

Lots of small-medium ones seems better than one mammoth, imho.

[@shronemor]

Jim Fupanda eventually I'd say yes to that. But to get it economically viable initially a large multi function station would be better than numerous small ones that would need to specialise and may mean that they could not be financially independent or worthwhile

[@zacher2917]

Just entering college to hopefully get into the aerospace industry. I’m baffled at how many people think it’s ridiculous to think about space and orbital infrastructure. They tell me it’s a waste of time and money. Whenever I get discouraged I always come back to this video or orbital rings. I love all your videos but I’ve probably watched this one atleast 10 times over and orbital rings more. Keep up the good work.

[@baumulrich]

amazing video, isaac, as always. also very excited for those upcoming ones. cant wait!

[@billybbishop]

As normal, I was listening in while tabbed to another screen, but out of curiosity, I managed to tab back at 14:14 to suddenly be greeted by a toddler getting about as hyped for some sand as I get when I see a now Isaac Arthur video in my feed. Keep of the good work.

[@RedwoodTheElf]

4:50 Is there artificial gravity in that docking tube? If they're spinning the station to simulate gravity, you couldn't walk that way in that position, you would most likely install a ladder and climb "down" towards the rim.

[@magnusrydberg707]

The graphics in your videos are getting really nice and specific to your narration. Thanks for entertaining us all!

[@lynnes4]

Hey Isaac! Fantastic as usual ♡

[@MrForgoneconclusion]

It's Thursday. I look forward to this evening every week because of your videos. Love from N.Ireland.

[@francoislacombe9071]

4:35 The people shown leaving that shuttle would NOT be able to walk like that. That corridor, as depicted, would look like a vertical shaft to them.

[@Cyberwar101]

They would be able to if it is at all away from the center of the rotation. it would just be incredibly low gravity, but still enough to get a feel of it, and be attracted to the floor.

[@KarlJeager]

He is talking about how they are walking towards the outer edge of the ring so are actually walking along the walls towards the floor as the video depicts it. Seems the artist didn't think about the directions of the forces.

[@whtbobwntsbobget]

Great presentation, Arthur! I for one, am sold. Let's build it!

[@BensLab]

Some interesting ideas in this video.

[@Sangano1]

This is my 2018 version of "must-see TV". Happy Thursday.

[@edwardwarner8256]

Wonderful video Isaac 😃

[@herzwatithink9289]

This episode looked especially awesome!

[@juliusra6462]

I do believe that the design of the station shown is mostly for visualization purposes. Because, even if it was a small part of G the walkways from those shuttles would not work normally.. The centrifugal force would be uncomfortable for people to move out of those ships. (though with this many comments maybe it was mentioned already)

[@jeremyleyland1047]

I am kinda depressed how much we spend on lotto chances then we do in space programs.

[@joeycote5500]

god you're right, imagine if everyone gave a dollar to something actually important rather than impossible odds at riches

[@MsSomeonenew]

Well that is just the reality of humanity and worth paying attention to. We put money in a lot of stupid shit even when we are fully capable of understanding it is stupid shit.

[@herbfox189]

I look forward to your videos every night...I watch them to fall asleep..but really can't sleep watching these exciting videos..your to awesome..

[@UsurpersAndAssassins]

It's the curse of humanity. So much time, money and resources are wasted on ridiculously small minded, stupid things, when good science and progress struggles to get any funding at all.

[@ronschlorff7089]

@@UsurpersAndAssassins I believe you are right, from our perspective it's slow and plodding, but from human History's it's remarkably fast. Just 100 years ago planes were held together with cloth, wire and wooden sticks, then look at the space planes in this video, that many young folks here may take to the space ports. Amazing to contemplate. I think the true "curse of humanity" is our heart-breakingly short lives. It's understandable we want the "wonderful future" we were promised, before we die!

[@Albyint]

I love you and what you do. You make my week with every video you put out. Thank you for giving me hope for life and humanity.

[@LuizAlexPhoenix]

Damn, I must work, Isaac! Don't distract m... Oh, cool. Please tell me more

[@joemasters2270]

Man, I would love to still be alive when this becomes a reality. Another great segment! Thank you

[@Matis_747]

Great video man, Im really Enjoying your body of work. Keep it up

[@DataSmithy]

This was a quite awesome and wide-ranging assessment of what is required for our next steps into space. There are so many things here I had not thought of before, like multi-level rings for different levels of gravity. Suddenly the idea of a space port makes so much more sense as a stepping stone to moon and Mars colonies and a solid space economy. While I am inspired by SpaceX push to build a Mars colony, currently going to Mars seems like a death sentence, given how much more we need to know and have resources available to make it work. Building a station like this seems like a much better use of the BFR.

[@JulianDanzerHAL9001]

actually, while the square-cube law does help build large stations in terms of shielding and resonable minimum thickness walls, I might want to note that in terms of pressurized volume the squarecubelaw doesn't help you - or hinder you - it doesn't change anything - the larger a pressure tank gets the thicker its wallks must be to sustain the same pressure inside and te same rules of saling apply to any geometry plus a geometry factor, so any pressurized space scales in mass proportional to the volume - in fact under the ideal gas approximation a pressure tank made of a certain material holding a certain gas an i na certain geometry would have a constant ratio of gas-mass t tank-mass regardless of size - so a large space station would still need a minimum mass per cubic meter - to be fair for a welldesigned spherical or cylindrical pressuretank that mass is usually less then that of the air inisde - which also sclaes proportional to the volume - but if you build spacestations a bit more complicated and a bit less ideal in shape then a single-part sphere the structure needed to contain pressure inside can become quite significant and depending on design could get up to some ten times or so the mass of air - and hile 10 kilogram per cubic meter seems little (thats 1/50 of the ratioin the iss) once every other aspect scales down by squarecube law and you start giing people lots of empty space for comfort it becumes quite significant - for a 2mio m³ space that would be 20000 tons

[@SimonClarkstone]

I am glad I'm not the only one thinking that a container's walls must become thicker when it gets bigger. I find it easiest to a cross-section of of a sphere and the forces *perpendicular* that plane: the tension the two halves pull apart with is the cross-section area of the gas times its pressure (and doubled possibly?), and the tension the walls can withstand is also proportional to their cross-section area.

[@demoniack81]

The walls already need to be thick to be radiation and micrometeoroid resistant, so as things stand right now they're probably much bigger than they'd need to be just to contain the station's atmosphere. Of course this advantage will wane off the bigger the station gets, but at least it's something.

[@seraphina985]

+demoniack81 Indeed the insulation is the biggest factor, you can already see this in effect in airliners which while they don't have to worry about micrometeorites and such they do need a good inch or so of thermal insulation to protect their occupants from extreme cold which comprises the vast majority of the thickness of it's walls far thicker than the thin piece of aluminium sheet that makes the skin of the pressure vessel itself which is holding a pressure differential of around 59 KPa (Internal 75 kPa, external as low as 16 kPa at 43,000 ft). Could probably get away with a differential of only 75 kPa for a space station as it seems that the vast majority of human are quite fine breathing a 21% Oxygen, 79% Nitrogen atmosphere at 75 kPa without any problems after all billions of passengers are exposed to those conditions on commercial airline flights employees easily reaching lifetime exposures of tens of thousands of hours I'd have thought that if the reduced air pressure caused long term health consequences at this level it would probably have been noticed by now, especially in an industry which has very stringent health monitoring rules in place so there is plenty of data tracking the health of flight crews. And I certainly suspect that people going up there would be required to pass a medical exam to ensure they are in reasonably good health before sending them up there. That's just good practice before sending anyone to a remote location with limited medical facilities and where transport to a fully equipped medical facility capable of providing specialist care would require I would assume over an hour I'd have thought, I mean if it takes 15-20 minutes to safely discharge the energy of an airliner in cruise flight and bring it in for a landing so presumably it would take several times that to safely discharge the massive kinetic and potential energy of an object from orbital flight in order to make a safe landing.

[@michaelkeefer5674]

The way squarecubelaw fails to works with pressure vessels. For a twice as big the pressure vessel, the walls must be 2 times as thick to contain the pressure, but cover 4 times as much area. It will require 8 times as much material to build the container that holds eight times as much pressurized gas. Scaling up pressure vessels does not gain anything other than open space.

[@JulianDanzerHAL9001]

umm.. no, sorry, thats not how it works - twice as big the vessel, the walls must be twice as thick AND cover 4 times the surface are making them 8 times as heavy while including 8 times the volume plenty different ways to demonstrat that thoug hthey are basically redundant

[@flirkami]

Oh my god, seriously this was amazing!! I just found you a few days ago and now had the time to watch the first episode. I just want to say thanks for giving me hope that there is still quality content here :)

[@MusikCassette]

when I first red the title I red "Spacesports" and for a moment I thought this episode would be about what interesting sports you could do in zero or low gravity.

[@stefanr8232]

Sports should be an episode too.

[@MusikCassette]

well he mentioned racquetball 21:03

[@josephedmond3723]

Two teams, one ball, zero gravity.