Zero-Gravity Civilizations

[@evensgrey]

I recall a slightly humorous description of Krikalev's predicament: Imagine your boss sends you on a lengthy job overseas. When the time comes for you to come home, you're informed your boss doesn't have the money to bring you home. When your boss finally does bring you home, you discover your passport is invalid because your country no longer exists.

[@horrificpleasantry9474]

@Robin Yabanks But a bag of potatoes at the store costs a billion dollars

[@yastreb.]

Well its not like the cosmonauts on Mir couldn't have came down any time they wanted in their Soyuz, they were just worried about leaving the station unoccupied until Russia could scrape together enough money to send the next crew.

[@DunsmoreFamily]

Check out the Tom Hanks movie “The Terminal”

[@michaelprice3031]

Can't stop thinking of how birds would react to being in microgravity.

[@r3dp9]

Has been done. They get very confused.

[@bigmanjames4394]

“Oh god, what the fuck is happening in here!” *Pained and confused screaming*

[@DogFoxHybrid]

I want to see parrots in microgravity - they'd rock that shit once they got used to it.

[@smorrow]

@@DogFoxHybrid Corvids too

[@farmschoolchicks1913]

kzbin.info/www/bejne/rWXWi2anmpuDn6s

[@kinguin7]

"Zero G for a human is like a fish out of water." Zero G training: *human in water*

[@ortherner]

lmao

[@freedomhq4075]

@@ortherner uchi uhh guugucgu gcuhug hh hhh in j urh uu u

[@imnot-]

@@freedomhq4075 English only

[@fomalhaut_the_great]

@@freedomhq4075 oh no baby found the computer

[@ortherner]

@@freedomhq4075 akakwkwkwksi wowkwk kwiwqisosi wiskskdmdnd

[@rustyshackleford1508]

Isaac Arthur, the absolute chad, casually inventing new slurs for human subspecies that don't exist yet

[@arandomzoomer4837]

Since I live in Earth, with gravity, I get to say it. How’s it going my sinka?

[@warcam2592]

Universe brain scale racism

[@kinguin7]

I wanna like this comment, but that would un-nice things.

[@Pulprat]

Humanity first! Flat landers only!

[@potato-ld1uj]

I thought being called a "Chad" was a bad thing.?.

[@Nethan2000]

I talked with one floater on a shuttle to Jupiter. He scowled at me for not adapting to my environment, but then got squeezed out of his breath when the engines started burning. Turns out he can't even handle 1G of acceleration. I'll keep my bone and muscle structure, thank you very much.

[@rvaughan74]

So would the suicidal Floaters be called Splatters? I'll show myself out... I don't want to be introduced to the Airlock.

[@r3dp9]

Maybe you'd just keep your bones strong in a different direction, such as only from the crash couch position instead of the standing up position. A microgravity metahuman might look like a bizarre cross between a turtle and a monkey - agile four limbed climber in 0 g, sturdy four legged crawler in 5+ g.

[@rvaughan74]

@@r3dp9 That sounds more like a Heavy Worlder who's had lots of practice in microgravity.

[@bryanburgess3950]

You carbos are weird. Synth bodies are where it's at

[@johntowers1213]

@@bryanburgess3950 Bah...you can all keep your solid matter.....Its the upload life for me...:)

[@CommonBovine]

I would love a compendium of "Isaac Arthur's: 1001 First Rules of Warfare".

[@deltatheintp0263]

Why so few?

[@griffinhentzen9780]

The first rule of warfare is to grab a drink and a snack :)

[@annoyed707]

First Rule No. 1002: Always compose a compendium.

[@Leispada]

Can hardly imagine how incredible the sight would be inside a Edersphere.. you can see practically all of the landmasses, and it could all be lit in so many incredible ways

[@Empmortakaten]

Atmosphere isn't perfectly clear, even without sooty pollutants. So it does eventually fog line of sight if your looking through many miles/kilometers of it.

[@zedukelstarstryker9875]

You'd just need massive fans on each side of the cylinder, and air filters

[@saucevc8353]

@Forge Father Eli I feel like falling off a roller coaster in 0g would still be a big deal, after all you'd still carry momentum and if you crash into anything you're dead!

[@ianharrison5758]

@@saucevc8353 then make it far away enough for said person to be intercepted by a Drone and either put pack in the coaster if you could find a safe way to do it or just slow them down enough for them not to hurt themselves. Or have that be part of the experience and have it be somewhere where if you fall of you hit a soft membrane that launches you a different way, and another and another so the entire experience is seeing how fast you can go, leaping off the car and 0 G pin balling and acrobatics while never hitting anything that can hurt you, or drones to intercept you if you get off course so far you actually could hit something hard if not stopped. In 0 G you can make the solution to falling off be an even wilder experience

[@km5405]

the inners call us belters less then human but no more

[@Fatshadow33]

Beltalowda

[@MrMelonMonkey]

alex deserved more than that....

[@StMyles]

Dey no sasa ke....

[@Sol-Invictus]

But to harm the Homeworld... Birthplace of all the life that makes life as we know it possible from our atmosphere to soil. I've always imagined preserving earth's habitability well longer than our star is capable. Wonder how many animals would evolve technology and civilization over 100,000,000,000 of shifting environmental practices. Or what we'd see in protected animal habitats in orbit.

[@BeReal918]

Fred Johnson's death must never be in vain. Belters must unite! OPA for life!

[@fredwupkensoppel8949]

I'm gonna eat a crumbling snack and appreciate those hand-written subtitles.

[@generik7414]

One thing I couldn't help but notice you didn't mention, is that you wouldn't necessarily need drums. You could have arms linked to rooms quite a far way from the centre without making a full drum.

[@falcychead8198]

That's probably what we'll see before anything else. Robert Zubrin proposed that a flight vehicle to Mars would be in two parts connected by a tether, swinging around like _bolas_ to create "gravity." ("Centrifugy?")

[@generik7414]

@@falcychead8198 All aboard the bola-mobile!!

[@generik7414]

@@falcychead8198 actually speaking of Mars, the ship used in The Martian also used that. Rooms attached by sealed bridges, rather than a full drum.

[@barahng]

@@falcychead8198 That's similar to the spacecraft design in Andy Weir's "Project Hail Mary". During flight the spaceship is a single hull, once arrived at its destination it splits into two parts connected by tethers and spins to generate gravity.

[@AleksandrPodyachev]

Oye, Beltalowda!

[@sethapex9670]

To na kang setóp da mesach!

[@DimitriosDenton]

Remember the Cant!

[@IGameChangerI]

sasa ke bossmang

[@anonymoususer3561]

@@IGameChangerI yes boss mey

[@ghostplayzbusters]

@@sethapex9670 sorry I don't speak rock hopper

[@ains2904]

15:58 life alert in the year 31hundred 140year old"Help, I've fallen and I can't get up!" 100year old: "There is no up in space, grampa"

[@saucevc8353]

Help! I've drifted out of the airlock and am being bombarded by high energy radiation!

[@ains2904]

@@saucevc8353 was not the imposter

[@AaronAlso]

I love that we have had to add the descriptors of sealed drink and non crumbling snack to the intro.

[@zawsrdtygbhjimokpl6998]

thanks for covering this. I always found it weird that by default you went for rotating habitats. I can understand how fusion reactors might not be possible or at least non-massive ones, but adapting to 0 G seems inevitable since it should definitely be possible under known physics and is cheaper than not being adapted edit: relistening to this. Damn, lack of gravity is far more harmful than I thought. No wonder you suggest rotating habitats to humans. On another note, only now I realize the weight of the audience you refer to, not so rarely being, people from the far future. You're an optimist as well, so it'd stand to reason that most cases of your content being watched ever will be by those in the distant future, thus it makes perfect sense to refer to them so often as a joke. Still, it's pretty wholesome.

[@Soken50]

When you put it like that it seems quite inevitable that "floaters" would take over space wether through natural evolution or more express means. It's crazy how much you expand my idea of the future in each episode despite being already well versed in science and futurism, I literally can't imagine what you will enlighten me with next ! :D

[@lucasharvey8990]

His Clarketech episodes are just him flexing on all of us.

[@lucofparis4819]

Gravity wells will remain the large piles of resources and living space they are, meaning weighters will have the means to develop the needed megastructures to have easy access to space, and will have the energy budget to simulate gravity in their habitats. I wish good luck to floaters to reliably and cheaply simulate zero g in gravity wells. This asymmetry doesn't seem to count in favour of floaters, who would end up trading biological flexibility for the very effective yet incredibly dangerous path of fully adapting to space as a medium. Mass extinctions of species are full of dead species that were so well adjusted to their environment that any significant change wiped them out. That said, we could also take the opposite perspective and see inhabited gravity wells as the rarity, and space life as the interstellar norm, meaning weighters would be the ones being endangered. Could go either way, depending on how hard exactly is life in space going to be (we're still working with mostly 20th century assumptions about space life here).

[@Soken50]

@@lucofparis4819 If you're a "floater" you can just vaporise the planets to extract any material you need and create way more livable surface than a dense sphere can, not to mention that while planets are big resource deposits, most of it is inaccessible below a few kilometers. Even the "grounders" would likely dismantle every object in the system to create more living space and resources. Not being able to reside in gravity wells seems a lesser problem compared to having to spend energy escaping them and simulating them once outside.

[@lucofparis4819]

@@Soken50 You cannot 'just vaporize planets', as the amount of energy required would be so large you'd be much better off spending that to land and physically pick the planet apart one layer at a time. The advantage of habitable gravity wells is that they're already habitable. No effort required (or so little in comparison). So it is untrue that they're somehow less interesting just because they're less effective in terms of available living area. As for mining deep within gravity wells, it's about dealing with compression, something active support can deal with, so we're not just talking about a few kilometres deep, but probably one or two orders of magnitude deeper, which offer circumstances where mere active cooling to render underground structures habitable would offer great geothermal power opportunities. Last but not least, the mere existence of floaters entails the existence of infrastructures allowing for cheap access to space from the surface, i.e. the associated tech would be already researched, proven and quite well refined in the era when floaters would begin to exist. Furthermore, these structures would be necessary for the development of the space infrastructure that ought to exist for floaters to exist and work, making them initially dependent on terrestrial shipments. The same would apply to rotating space habitat tech and mass production industry. So, it isn't so clear how these apparent problems would remain a dissuasive factor for future gravity well colonizations and exploitation. All this to say: I'm not so certain floaters would be so advantaged.

[@Soken50]

​@@lucofparis4819 You can 'just vaporise planets', it takes the output of an entire star and a few years, but you CAN. I take it you're not a regular of the channel ?Because melting down planets to access resources and create more living space is FAR from the craziest idea you'll encounter here, enjoy your stay. As for the rest, I don't have the energy to rebut each point as many were already adressed in the video. We can certainly overcome many of the challenges that gravity poses but I remain convinced skipping gravity entirely would prove more beneficial in the long run.

[@albusvoltavern4500]

Who needs gravity when you have the worm? It loves us and we love it.

[@Dragrath1]

You mean *return to the worm* the last common ancestor of bilaterians was effectively a worm. Perhaps in the far future our successors will be big brained cyborg worm creatures with several hands/tentacles? Cyberworms perhaps? Perhaps they could become living brains like octopi (with the enhanced neural complexity brought by multiple sizes of neurons of birds to optimize the potential of nature with cybernetic brain enhancers) and of course there is no limit to the amount of arms beyond ones mental ability to adapt. Maybe we could even take on a more fungus like form even?

[@_apsis]

What was, will be. What will be, was.

[@User-gx3sr]

Stellaris 👀

[@bongbingbingbong9090]

"Reject gravity, return to worm"

[@ellonico]

WE LOVE THE WORM

[@francoislacombe9071]

I remember reading about a low gravity megastructure that was an actively supported solid shell, 1 AU in radius, built with the Sun at its center. Sunlight was harvested and transfered to the outer surface to make it habitable, with atmosphere, hydrosphere and biosphere providing a vast habitat for quadrillions of people living under a mere 0.0006 g of gravity.

[@Crazael]

In the Vorkosigan Saga, there are the Quaddies, who were genetically engineered to have two sets of arms and various other adaptations for micro-grav. They were created shortly before artificial gravity was developed, and so are a minor, but large splinter culture that mostly keep to themselves in one corner of colonized space. Also, in a slightly less scientific direction, in the Gundam UC timeline, the "Newtypes" develop psychic (mostly manifesting as an ability to sense other people and their intentions, though some people are full on telepathic) powers as a result of "human souls no longer being bound by Earth's gravity".

[@earnestbrown6524]

Yes "Falling Free" is a nice little story and the other times Quaddies show up as well.

[@animistchannel2983]

Great episode! Of course, as a "fan of the can," I think at this point the most crucial task is to make the first cylinder habitat(s), which we already know how to do, and we can sort out the subtleties at our leisure after that. Okay, here's my opinion. The first rule of warfare is: "You are already in combat. Nature is always trying to kill you anyway, so the only thing that changes is the most urgent opponent." Survival is an ever-evolving duel among checklists. Eventually, Time wins regardless, but the whole point of the exercise, the very meaning of life itself, is to make the bastage work for it; and to build some beautiful sand castles in the meantime until the long tide washes us over. With such understandings, we can proceed in communion and joy to build as much and as good of a future together as we can bring from our imaginations to our worlds.

[@nicholas82849]

Arthursday, my favorite day of the week, as always!

[@pocketheart1450]

I wrote a book that takes place in the 55th century. There's an incredible amount of space traffic in the solar system and many millions of people travel through space everyday. To avoid the problem of transitioning from gravity to microgravity and then back to gravity, humans have been genetically engineered so that their muscles do not atrophy. They've been engineered for a lot of other things too, both related to zero-g and other things, but that is one of the most obvious.

[@linz8291]

Really excellent examples, and you can traveling to the 55th century and tell your boyfriend we will dating 300-400 years, because life span is 750-1050 years on average. 🤣

[@deltatheintp0263]

That part at the end reminds me of the All-Tommorows spacers, but dang!! That aerosphere idea is just, wow!

[@allyourmoney]

All Tomorrows was a fantastic read. I came across it years ago online.

[@douglasphillips5870]

When you mentioned multi generational experiments of animals in microgravity I pictured a cloud of cedar chips with mice swimming through it.

[@WallaWaller]

"You might still want to go get a sealed drink and a non-crumbling cnack" *checks bottled soft drink* check *Bites cookie, cookie crumbles* ...........

[@certifiedpossum8655]

Shit. Sound the cookie and soda alarm

[@williammcclellan3497]

When it comes to weightlessness I'd like to point out that we used to have something that would come in quite handy a tail I doubt it would take that much alteration to bring it back.

[@marcusrauch4223]

Well, there are humans born with tails due to a gene defect.

[@vladimirsilver2633]

@@marcusrauch4223 not a real tail. Just a skin growth deformity with no bones or useful muscle.

[@endy9059]

Yeah zero-G civs are the best route for us imo. Anything else is substantially added cost and decreased space in terms of needing solid floors.

[@mjk9388]

Really looking forward to the orbital bombardment episode and the actual first rule of warfare (own the the high ground?). Another great job by Isaac and team on this episode!

[@kennethsalyers3809]

I agree if the 1st people going to Mar stayed they would be able to help the next group of pioneers and keep moving forward.

[@VoidSpider69]

Just gonna say, there is another option for gravity simulation in a vacuum. Since accelerating has the same effect on your body as gravity, angling your engine parallel to the floor of your space shuttle and setting it to 1g of acceleration is just as good as an O'Neill cylinder. If you are wondering why no ones done this before, it's because currently, rocket engines have very little fuel capacity, and can not afford to be under constant acelleration

[@profwaldone]

"otherwise your entire ship will be spinning before long" yeah, that's what we should be doing. fuck trying to make airtight barings. just spin the entire ship in transit and stop the rotation for the burns.

[@Archgeek0]

You never needed airtight bearings. Let the airlock spin and have the rotation interface be in an unpressurized section, and be sure to use a lubricant that doesn't outgas.

[@SirDeeznuts]

Magnets

[@KRYMauL]

Or use a nuclear fission rocket, and have constant acceleration for the entire trip then orient the floors so that the floor will be perpendicular to the line of acceleration creating a simulated gravity.

[@MrMelonMonkey]

@@KRYMauL cant accelerate constantly if you want to stay in orbit

[@KRYMauL]

@@MrMelonMonkey I didn't realize that you always want to stay in orbit even still if you curve you acceleration you can stay in orbit by always being ahead of the planet enough to stay in orbit.

[@LaserGuidedLoogie]

I read Integral Tree back when it first came out, I was in high school at the time, and I have always wondered if the giant gas halo around the neutron start was possible. That "world" seemed so compelling, just based on how huge it was, and it would be a great idea for another show.

[@josiah42]

Please make an entire episode on Gravity Balloons and other microgravity megastructures!

[@jbtechcon7434]

Oh, I love this idea!

[@onlyrick]

About three minutes before it was mentioned, I was thinking about Niven's Integral Trees. Time to go back and re-read that. Thanks again, Isaac.

[@FerencDojcsak]

Although the memes have gone viral anyway, it's worth to mention -specifically- that The Expanse (both the books and the gorgeous series) deals with low/zero Gravity extensively and compared to most sci-fi, accurately. Definitely deserves a shoutout. Remember the Cant!

[@laughingatu3699]

I commented to you about a year ago that people would probably evolve to live in zero gravity. I'm happy to see you finally make a video about it.

[@albertjackinson]

As I'm watching the video, I've learned new things just in the first few minutes. I haven't been able to watch episodes lately, so doing it on-time again madd me forget how informative and well-made and awesome they were :D Surprisingly, the NASA focus glasses shown at 6:23 are a thing. Now *that's* cool.

[@sciencerscientifico310]

Although the company that made those glasses went bust.

[@michaelmcchesney6645]

In my all time favorite novel, The Moon is A Harsh Mistress, Robert Heinlein imagined that after more than a few months in lunar gravity, human beings could no longer live permanently on Earth. In the novel, the moon was a penal colony, much as Australia once was. However, it was a penal colony where the descendants of the prisoners could never leave. The over populated Earth, was also dependent on lunar farms for food. One man realizes that because the moon was sending so much water (from mined lunar ice) and nitrates to Earth in the form of food via electromagnetic catapults with nothing being returned (except more people) the moon would eventually be unable to support it's own population, much less Earth's. Teaming up with some friends and the (secretly) self aware computer than runs everything on the moon, they stage a revolution. That book features many topics that have been episodes on this channel. Isaac has not however done episodes (that I can recall anyway) on libertarianism or polyamory (2 themes present in nearly all of Heinlein's non "juvenile" novels), at least not yet. Maybe one of these days, because we all know 2 subjects that are never controversial are sex and politics.

[@Dampfaeus]

The proper future cultural names are going to be "floor gang" and "ceiling gang" :D

[@justinm20]

Belters are now filling the comment section! Earthers! Come hold the line!

[@PeetaProduction]

These damn skinnies!

[@cwdiode4521]

I want to visit East African grasslands now

[@empty5013]

Completely unrelated to the video, but I just wanted to point out I watched one of your ancient 5+ year old videos and compared it to this one. Your presentation skills have improved amazingly in that time, your line delivery is so much crisper and confident, your speech issues are much more controlled and subdued and in general it's an absolute joy to listen to and a frankly amazing improvement over time. I just wanted to point out how impressed I am with not just the level of quality and finesse of your content and delivery, but also the incredible improvements you've constantly made over time. Huge bravo and as always thank you for the continual influx of high quality content. Also shoutouts to everyone else who is contributing the editing skills and background footage, don't want to leave anyone out

[@petersmythe6462]

I do think there's probably significant value in having artificial low gravity. Something like a 5 meter radius cylinder spinning twice a minute only generates about 0.22 m/s^2 at the rim, less so in the interior, but at least things can fall and gasses can separate from liquids.

[@teaser6089]

Great video! I hope you also spend some time next week discussing the fact that some scientists still debate whether Dark Mater exists, cause it isn't mathematically necessary to exist!

[@CreativeWorkflowHack]

You upload timing is always perfectly in sync with my breaks. :D

[@ouchouchouch]

Getting your head around stuff like this is heavy...

[@ouchouchouch]

@alex coolt dissing me like that ain't coolt alex

[@ouchouchouch]

@alex coolt obviously with a heavy head

[@alexanderseaman9799]

@alex coolt hey man no need to be so rude

[@DEADB33F]

@6:00 If they screened astronauts for farsightedness rather than perfect vision would they come back from missions with their vision actually improved?

[@DigitalJedi]

An interesting idea, though how that would work. I can see one problem with being farsighted on the ISS. Everything is nearby, which would necessitate glasses. Glasses can float away, which can be solved by tethering them to their outfits.

[@MrSperoni]

"Every improbable event will happen eventually if you wait long enough"

[@certifiedpossum8655]

Every improbable event will happen given enough time, even you being laid.

[@Martial-Mat]

Isaac, your body of work is deeply impressive. Thank you.

[@Konamerp]

I love your videos. Space has been keeping me focused on something during this covid pandemic. It's really fucking cool to see someone from my father's hometown in Ashtabula Ohio (that I lived in for a short bit) become a big KZbinr. My grandfather ran a masonry business there (Lencl Masonry) for a long time. Keep up the good worky friend!

[@shlomster6256]

I'm surprised not to see Lois McMaster Bujold's Falling Free. Nicely encapsulates some of the genetic solutions you mention in the piece. Thanks again for all you do!

[@melvinhogberg]

This episode was so cool isaac, keep up the good work

[@st3llarmemer111]

Gonna need my drink to be in a closed bottle and my snack to not be bread for this episode - otherwise it'll float or crumble away

[@revenevan11]

NASA's tortillas are still on the menu! 😆

[@suavemusic_official]

I thought Issac had stopped uploading videos. Then I did a search and realized that it was my algorithm moving away from the content....glad to be back with the fam brainstorming about our future 💯

[@isaacarthurSFIA]

welcome back :)

[@jerrysstories711]

The whole driving force behind this episode was to get in that Floaters / Sinkers joke.

[@AleksandrPodyachev]

Oye, Belterlowda!

[@OnxGrid]

a patreon supporter

[@jerrysstories711]

@@OnxGrid Nope. Co-writer of the episode. :-)

[@OnxGrid]

@@jerrysstories711 POG

[@thedoruk6324]

All Tomorrows Astreomorphs with Colossal Brains *like* this upload!

[@remanjecarter2787]

Yess with their long fingies

[@nexusoflife]

Yes! I love All Tomorrows, especially the Asteromorphs.

[@SomeKindaSpy]

YES! Such an underrated book!

[@LucasDimoveo]

Reject humanity, embrace T H E V O I D In all seriousness, I wonder what the role of steroids will be in the short term when it comes to the earliest days of spaceflight

[@hithere5553]

T E N N O

[@DreamskyDance]

Indeed.. Tenno XD

[@PerfectAlibi1]

Embrace the worm! Embrace the cycle! The worm loves you, gravity is desire!

[@geemcd]

Embrace THE ROIDS

[@Cyberwar101]

@Robin Yabanks maybe build the electro stim into clothes/suits? (A pressure suit doesn't need to be a full space suit, it just needs to keep you alive in case of emergencies. So I would imagine many would wear a minimal pressure suit at all times). Also there are some genetic conditions that result in too much bone growth/muscle growth. Those are awful to have on earth, but might be highly desirable in a controlled gene therapy in microgravity.

[@climhazzard115]

I imagine a human that fully evolves to zero G would eventually become something like a floating tentacle monster. Because let alone bipedal movement, we wouldn't even need a skeleton anymore, and tentacles would be better than short arms or legs for moving around and manipulating stuff... lol.

[@OldGamerNoob]

floor-bound sinkers floaters LOVE IT

[@innocentbystander3317]

A.H.: Bed-bound?

[@VainerCactus0]

Maybe the first rule of warfare is the friends we made along the way.

[@Cyberwar101]

Great video as always Isaac. This got me to thinking; why not take it a step farther? If you have cybernetics or advanced spacesuits, then you could get away without atmosphere too. Instead of inflating your habitats with air, you just use asteroids and the like for protection. You can use short range radio just like we normally use soundwaves, just make a wavelength range and associate it with sound. You would need oxygen refueling as well as food that can be consumed without removing your suit. Genetic modifications to remove hair growth and sweating could also be useful to prevent sores. A heat sink and radiators may also be needed. However, if these issues can be handled, then they could grab the low hanging fruit very easily indeed. They could literally carve homes out of asteroids.

[@Amantla]

I love the part where you say "get yourself a drink and a snack",,, no one else does that on youtube..

[@brahimdiop5506]

If the main muscle groups we're worried about atrophing are cardiovascular and posterior, you could create a small drum in a station designed for people to sit and sleep under spin gravity. Drum doesn't have to be nearly as big if it's designed for people to float to their spots before spinning up and then turning off to swap shifts

[@Compnerd1]

I am envisioning some sort of 'gravity sickness' device, either a machine for one to enter or a small subsection of a rotating habitat. You are placed inside of it for a time, much like a decompression chamber, as it gradually ramps up its revolution rates and therefore gravitational effect. Instead of the light switch of gravity returning as you go slamming through a planet's atmosphere, put it on a dimmer and slowly turn it up before you even arrive. I could even see this used for sections of a larger ships, preparing portions of its populations to settle various gravitationally unique locations. Just spin the colonizing population's portion of the ship to acclimate their biology ahead of time...

[@chrisd6736]

Always found this topic super interesting. Can human beings even develop without gravity? I think a million things would go wrong.

[@Prof.Megamind.thinks.about.it.]

Mr. Dothe Twist , Any of these "spin the ship" or "spin-section" architectures will not be practical . They will be too problematic and weak ; providing inadequate gravity before malfunctioning . The practiceable and safe approach is to employ split-ships/tethered-ships . Either one of these designs has the advantage of providing a lifeboat , in case of accident or impact . They also provide full gravity for the entire ship , not just partial-gravity for part of it ! 😎 *To examine this subject in more detail , read my post at : quora.com/How-would-Martian-settlers-cope-with-the-lower-gravity-What-would-be-the-health-implications/

[@rexmann1984]

@@Prof.Megamind.thinks.about.it. I'll check it out.

[@rexmann1984]

It will go wrong Mice can't even develope with no gravity. I guess DNA only works in gravity.

[@chrisd6736]

@@rexmann1984- ya it’s pretty interesting really. In that sense, gravity is just as necessary for life as oxygen and H20.

[@virutech32]

@@rexmann1984 DNA works just fine in micrograv otherwise you would die very quickly on account of not being able to make any proteins. its mostly a matter of mechanics and plumbing(digestion, circulation, gestation & delivery, etc.).

[@randomguy4167]

I feel like the Expanse has ruined the idea of humans living in low-g environments for me. The idea of humanity dividing into strong normal planet dwelling humans and low-g lanky freaks that live on asteroids or whatever kinda scares me. That’s why I also prefer that Venus is the planet that is terraformed and permanently settled first as opposed to Mars since Venus has similar gravity and won’t produce such uncomfortable situations. But that’s just me,obviously setting up colonies on Mars first is way easier since Venus is literally hell and my view is admittedly based on my personal feelings on the matter and not in any objectivity.

[@ofthecaribbean]

The thing about colonizing Venus is that you're not gonna live on the surface. We're gonna live in floating habitats in the upper atmosphere

[@strikeone7803]

but that is the most realistic thing to happen though, if our own astronauts who were born and raised on Earth have to relearn how to walk and go through physical recuperation for being 1 year on space imagine how F%^^^^ gravity might treat someone who was born in an asteroid with practically no weight in space. it's awful but it might become a reality if we somehow get off this planet before blowing ourselves up in the present/future.

[@vladimirsilver2633]

The expanse is awesome but the way they portray belters is stupid. Nobody with 1/8th of a brain would live in a low G rotating hab when they can easily spin it up to 1+ G. Even on Ceres which would split apart if you spun the whole thing, you could build rotating habs inside ceres. Terraforming or colonizing planets is also stupid. Every single moon or planet including Earth is less ideal then a rotating hab.

[@jonaszukas3249]

Dear Issak, I usually don't like to post public comments, but... I truly admire your knowledge, passion and intellect/creativity. I am not native english speaker and its difficult for me to listen to your speech (I know the problem) and I'd like to hear what you say. Can you ask someone like your friend Godier or last PBS space time presenter to voice you?

[@electroflame6188]

He does have captions on all of his videos, if that helps.

[@jonaszukas3249]

@@electroflame6188 I know, but I'd like to be on my own mind when listening, sometimes glimpse at space images :)

[@devifoxe]

Finally, my years of smoking alcohol consumption, and sitting around doing nothing will pay off!!! Thanx NASA... I promise I will be the best bad astronaut!!!!

[@petervilla5221]

The first rule of warfare? That's gotta be, like, the most important one! I can't wait!

[@hokiturmix]

In elite dangerous the rotating habitats have 1/10 g for the dock to manage crates and some have living areas with 1g in the same structure. Docking require to spin your ship. :D

[@lastmanstanding80]

This channel is a gift. Thank you.

[@fluffysheap]

15:49 Retirement homes in space, also known as the Near Death Star

[@annoyed707]

The first rule of warfare is to bewilder your enemy with a plethora of first rules.

[@johnobrien8773]

If I take my mood stabilizer three times a day and it's a designer drug am I a cyborg?

[@DreamskyDance]

4:20 - I remembered this ted talk by Chris Hadfield ( Going blind in space: kzbin.info/www/bejne/kKCZY4ZmqtGknqM )... very scary.

[@telumatramenti7250]

Well... thanks for clearing this up. I saw this and thought to myself: "no way the famous Isaac Arthur would use a misnomer like "Zero-G" LOL

[@brianperhai5262]

In Lois McMaster Bujold's book "Falling Free" within her Vorkosigan Saga, she explored the idea of replacing feet with hands in order to create a new human species more adapted to micro gravity. Good book, good Saga.

[@marlonlacert8133]

Micro Gravity, a small issue with big problems! Keep up the good Work!

[@Hyraethian]

Im really curious what being in VR with simulated gravity would be like while in microgravity.

[@revenevan11]

Regarding replacing feet with hands in long term microgravity living; our feet were very obviously previously hands that evolution has (haphazardly) made into feet. I wonder if we'd be able to look at the genome of close relatives and potentially ancestors, and then try undoing that change. All sorts of potential ethical issues there I'm sure, but it's just intriguing to me that we could hit the genetic "undo" button a couple times on our feet and then have more hands for microgravity living!

[@benjaminmiller3620]

It's very plausible, maybe even "easy" (Or as "easy" as anything involving genetics can be.) We've done related experiments on flies that have turned their antenna (which are homologous to legs) *into* legs growing from their head. There are probably a handful for hormones during development that kick off the differentiation. I imaging the hardest part would not be turning legs into arms, but doing so while *not* messing up the rest of the anterior/posterior development. (It doesn't help if you have four arms, but no anus/genitalia/bladder)

[@gildedpeahen876]

Watching your channel is why I knew The Expanse is one of the most scientifically accurate sci-fi shows.

[@neuralkernel]

The Virga Series by Karl Schroeder is set in a huge microgravity habitat similar to a Gravity Balloon... it's a very fun "Dieselpunk" adventure series that goes into some very interesting details about life in such an environment.

[@Mr.Nichan]

It seems like pressure differences between the core and just under the surface could be a problem with gravity balloons.

[@alluriman]

you can have much cheaper spin gravity simply by tethering 2 or more space craft with a long cable and having them spin around each other. like the distributed arc in neal stephenson's book seveneves

[@Big.Ron1]

I have pulled 6.5 to almost 7 positive and 3 negative as well as floating over the top (0 G) as measured by sensitive G meters. 0 G isn't bad, its the negative especially sustained that I didn't like. Real close to 7 G the lights started going down (graying out) so I had to release a little pressure on the stick. But what fun it is flying aerobatics. I know it isn't the same thing but it is a small sample and didn't have to worry about slow heart rate or low BP for sure. I worked up a sweat every time. Great fun.

[@MichaelBirks]

Evolving Legs sinto additional arms? Quaddies!!

[@malcolm_in_the_middle]

Do you think it's possible to bioform humans to not have their bones and muscles deteriorate in low-g? It would probably be beneficial if humans could comfortably live in any level of gravity and freely move between them.

[@josiah42]

Everything you have comes at a cost. The reason you have to eat so many calories in a day is to maintain all those bones and muscles. Your body is set up to deconstruct anything your not using to save energy. So... yes, you could turn off that maintenance routine under the assumption that none of us are calorie restricted and nearly post-scarcity. But it's not exactly a "defect", just optimizing under a different set of assumptions.

[@sciencerscientifico310]

Yep, there truly is no such thing as a free lunch!

[@Phoenixspin]

Yes, I want to get rid of my feet and replace them with hands.

[@RfAlSiTpA]

Lol I saw that "documentary" 🤣

[@saucevc8353]

reject humanity return to monke S P A C E M O N K E

[@RfAlSiTpA]

Why you ask? Because monke... That is all

[@PyroMancer2k]

The talk of separate cultures developing reminds me of The Expanse with Earth, Mars, and Belters which view each other as different because their societies have evolved differently and because of their environment they grow up differently. Where some Belters even mention if they setup colonies the new planets and those kids grow up in a gravity well they won't be Belters anymore.

[@Pulprat]

The Hyperion series by Dan Simmons, especially the last book goes on ti tell if a human civilization that chooses to leave in Space called the Ousters. Very good series.

[@dillonbutler2004]

Hopefully artificial gravity fields will solve the issues caused by microgravity by maintaining a steady 1G for the operators on board spacecrafts. Colonizing planets with low gravity, like mars, might become unnecessarily inconvenient if the alternative of traveling FTL is available.

[@petersmythe6462]

I think there's sort of two categories here: things where near Earthlike gravity is important (muscle and bone atrophy, heart rate, etc) and things where you just need a more than a few milli-G to make sure bouyancy and falling can occur. Having a soda in zero G is highly problematic due to no separation of gas and liquid. Having one in 0.01 G probably isn't normal but fundamentally gasses are bouyant in 0.01 G so as long as it's not some syrupy mess there shouldn't be a whole lot of issues.

[@Bibibosh]

Issacc is my favourite big guy, im a skinny guy but we all deserve to experience space for a while.

[@petersmythe6462]

"we don't know, no one has tried" Requesting two astronauts with opposite sex, age 20-25, fertile, preferably with impulse control problems, religious opposition to birth control, extremely high sexual appetites, and high levels of physical attractiveness. Prefer same blood type and not related to one another.

[@stefanr8232]

There was already a crowd source funding for 2 porn stars. They raised a few million dollars. My understanding is that they will launch as soon as commercial tourist flights are available.

[@jbtechcon7434]

I love your personal ad. They could also use that text to recruit astronauts for zero-g breeding!

[@larrybeckham6652]

I love Bryan Varsteeg's art, especially the Kalpana One space habit at 8:37. I would reject any project to send humans to space that not does future the art of building such a habitat and make it self-sustain as possible. The next step would the Gateway Foundation Voyager Space Station and then perfecting asteroid mine or mine the Moon use mass-driver to send building material to L5/L4. In the meantime, we need a Biosphere III to learn to make a supportive self-sustaining ecology on Earth first. This is a non-trivial problem, I am optimistic that can be solved. No human need live in gravity that we have not evolved to live until we learn much gravity it enough. Or learn to amend the human genome successfully. But truly, "gravity wells for suckers".

[@KnighteMinistriez]

I believe we have tried growing plants in space. It would be neat to do some multi generational experiments on both plants and animals in microgravity. You talk about humans growing up on Mars, Venus, the moon, in microgravity, low gravity, etc. not wanting to visit earth; and although that is a possibility for many humans, I think that there will be some that do want to visit earth. Just like there are already humans on earth that want to visit Mars, Venus, the moon, space stations, etc. I want to move to Mars just get away from the stupid people on earth. Unfortunately, knowing humans, there are probably gonna be some stupid people that will follow me to Mars, or even be made on Mars. I liked this video. I'll be praying. Great video, keep up the good work. God bless. Have a nice day/night. -------------------------------------------------------- sincerely a nerdy Christian.

[@jamesasimmons]

Footfall by Larry Niven is a fun read. I recommend it.

[@lisawillis8227]

One of my favorites

[@fredwupkensoppel8949]

22:39 The plot of The Expanse, basically.

[@SandroAerogen]

10:33 - I actually lost it lol. thanks so much for that laugh

[@7lllll]

we can easily simulate a high gravity environment with rotating habitats, but it's much harder to simulate low or no gravity environment, the best we can do is those planes that fall rapidly for a brief micro-g moment. it's a one way adaptation and that's a big disadvantage

[@nadal1275]

I always wonder if i ever find an episode in the upcoming list that doesn´t tickle my interest. But good thing you are so regular, during Covid lockdown its the only way to tell its thursday :(