Spaceports: Ascending to the Stars

For centuries we've sailed from ports across the deep blue sea, and to sail into the ocean of the night to new worlds and stars, we will need some Space Ports.
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Credits:
Spaceports: Ascending to the Stars
Science & Futurism with Isaac Arthur
Episode 315, November 4, 2021
Written, Produced & Narrated by Isaac Arthur
Editors:
Keith Blockus
Sig’unnr
Cover Art:
Jakub Grygier www.artstation.com/jakub_grygier
Graphics:
Fishy Tree www.deviantart.com/fishytree/
Jarred Eagley
Jeremy Jozwik www.artstation.com/zeuxis_of_...
Katie Byrne
Ken York / ydvisual
Kris Holland of www.maficstudios.com
Sam McNAmara
Sergio Botero www.artstation.com/sboterod?f...
Space Engine
Music Courtesy of Epidemic Sound epidemicsound.com/creator

[@coryray8436]

I've been listening to you for about 5 years now and I am still amazed by you every week. Thank you for doing what you do so diligently.

[@isaacarthurSFIA]

Thanks for listening

[@whiskeySe7en]

This comment section is fantastic too. I don't think I've ever seen a real shitty post in these comments

[@FlynLatif]

@@whiskeySe7en I can give it a good ole college try if you like :)

[@richardavery2894]

Damn. I just realized I really love Isaac Arthur. For real. He is a national gem. And we should appreciate him ❤ thanks Isaac for being so awesome for so long...

[@omgmoreheals]

We should pay him then

[@foty8679]

@@omgmoreheals You are paying him by watchin his ads and he has patreon..

[@jamescurrie01]

Issac said is "r" perfectly in "driver" 8:30 - that kind of threw me for a loop, cause I'm so used to his voice. His voice has become an iconic voice in my head I associate with futurism, would definitely miss it if it changed.

[@Barnardrab]

He's been gradually getting better at that.

[@isaacarthurSFIA]

:) 3 Years of speech therapy once I realized the show was sticking around as more than a casual hobby and hiring a narrator wouldn't be a popular choice.

[@adriansz343]

@@isaacarthurSFIA Heyy congrats man! Good to hear it's working, but we love you either way!

[@greensheen8759]

@@isaacarthurSFIA rocking the narration! I had to have speech therapy when I was young cause of a jaw issue. The R and S sounds were the hardest to correct in my case

[@HiroNguy]

@@isaacarthurSFIA On the 1 hand I'd gotten used to your speech and can understand you easier than many other narrators. On the other hand congrats on the improvement! On The Other Tentacle (OTOT 👾) I myself had speech therapy in grade school because my parents only taught me their language instead of English and I had an accent.

[@smitchered]

Wow, it seems like the episodes are actually getting longer! Imagine how much this says about our future; that a more than weekly 30 minute video by one of the best (and most underrated) team of educators out there is not _nearly enough_ to cover an iota of what our universe and future holds! I remember Isaac saying that more stuff to talk about appears with a much higher frequency than his videos, so he'll never run out. That's amazing news! For our own entertainement in the present, and our amazement in the future! Don't forget your drink and snack

[@barryon8706]

It's a relativalistic effect. As the subjects get weightier, time slows down.

[@F00LSG0LD215]

At the beginning ish they were averagely 30-45 mins long.

[@smitchered]

​@@F00LSG0LD215 But they weren't weekly; so the total amount of content dramatically increased. Furthermore, while it's true the average length of each video may have slighly dipped, that's also because the topics are getting so much more niche and precise; at the beginning, it's easy to make a 1 hour video about "the Fermi Paradox", but now imagine making a 35 min video about the Phosphorus problem...

[@edstoutenburg3990]

And not to figet JMGs'Event Horizon' channel -his guest and Space subjects track neatly with SFIA. I din't know when they can do some more collaboration vids. Id think if Godier could do a episode with SFIA -and have one-or more,if they could schedule,of JMGs previous guest on Astrophysics and deep space.That would-Rock.('third one from the 🌞...')

[@dakrontu]

Like the Romulans, missing from space for 100 years, we have a few domestic problems to resolve before we can say 'we are back'. I applaud Musk's superb efforts, but while building colonies on Mars is a great insurance policy, I can imagine residents there looking back at Earth thinking that, no matter what Earth's problems are, they can't be any worse than those on Mars. We need to fix Global Warming, the plastic pollution problem, international relations, bio-terrorism, a few things like that, then we can get angry about space.

[@shanepye7078]

This got me pondering baking in low or zero G. How the dough would cook, how the bubbles would form, the outer crust not resting in a baking sheet. Does a soufflé RISE in zero G? Would it allow for super light and flaky pastry, though crumbs are horrible in zero g. Food IS a huge part of colonization of space.

[@genericytprofile852]

Now I can imagine some space born citizen complaining about earth food, "Everything is so god damn dense and solid. Even the bread tastes like munching on a graphene brick. Back on O'Neil #0415 my mama would make the most flakey, warm and tasty garlic bread you'd ever try!"

[@ecogreen123]

bread was pretty essential to our last colonization project, why leave it out of our next colonization project, right?

[@PowerfulSniff]

It'd be very interesting to try and make spherical cakes and cookies

[@ecogreen123]

@@PowerfulSniff that would be so cool

[@casuallatecomer7597]

@@PowerfulSniff Or better yet 360 degree food that just "floats" in the air in a microgravity environment, no plate needed it just hangs probably tied to something but it acts similarly to a balloon, would be interesting to witness

[@davidweikle9921]

*The last time I was this early, it was a time travel episode.*

[@LarsRyeJeppesen]

Very informative, Coach. Happy Arthur's Day everybody

[@MrKIMBO345]

If we look at the history of the airport as model of the spaceport, airport was initially used for mail as same as the old airplane carried the people for the luxury only. Either satellites carriers or space mines will be first reason for having the spaceport. Economic is keys.

[@ASlaveToReason]

Lets go helium3!!

[@sirmiles1820]

Space factories, space commerce, space porn, space farming you can give so many things to do in space. We are just expanding our holdings here on Earth exponentially.

[@xermasboo5401]

The fact the E5 society actually had a workable solution to getting materials into space cheaply is a drastically understated thing. Especially, the fact that Rockets can be specialized specifically for transporting people or transporting dry foods. For example, a specialized rocket in delivering food at 20-40 tons every 2-3 months that comes back down with most of its body being designed to be recycled out of cheap material so that say space habitats can then take those same rockets as holding stores or break them down to create radiation shielding through means of thickness to reduce impact speeds. E5 solution is to spend around $11 Billion to make a Mass Driver which would be $50 Billion- $80 Billion in construction, but to get raw inorganic material(even some electronic components) with delivery vehicles that can then be later used as struts if not raw components even for exo-skeleton structures.

[@cannonfodder4376]

Had a bit of Deja Vu when I read the title to this episode. Oh god it was literally three years ago when you made that episode on Orbital Spaceports. Oh where the time flies. A fantastically informative episode to another good Arthursday. Exploring concepts in depth to reveal that a better future is indeed possible and within our grasp.

[@kebabinii7577]

God I want to see humanity uniting and becoming a spacefaring civilization in this century so much Edit: my fellow homo sapiens, if we put this much energy into creating world peace instead of explaining "why we will never achieve world peace" we would already living in a united world.

[@69Kazeshini]

We'll most likely be getting back into space in this century however i doubt we will ever become united.

[@drakebell6784]

Careful that they don't take everything from you by selling you that dream.

[@uncleanunicorn4571]

But... but... What about my petty sectarian, ethnic, religious violence? 😢😭😢😭

[@wurzel9671]

@@drakebell6784 good point that far too few people consider on this subject

[@13deadghosts]

But please, please not a world goverment/state, that would be hell.

[@ProperLogicalDebate]

Thanks for the mention of Mount Chimborazo which I used in a story that went nowhere. I had a very long, something like 2,000 feet large gun to slowly build up the speed with the muzzle on that flat area near the top.

[@TraditionalAnglican]

Ideally, you’d probably want a vacuum tube mass driver starting at the base on the mountain. You’d probably only get up to 600-750 m/s, but that would be free Delta-V you wouldn’t use fuel for.

[@ChrisGlenski]

“Blue Remembered Earth” has one off of Mt Kilimanjaro

[@harbl99]

Just sat down with a drink and a snack, and this pops up in my feed. How did Isaac know?!

[@ventusvindictus]

By next September, there will be enough SFIA episodes to watch one a day for an entire year.

[@isaacarthurSFIA]

If you include the bonus episodes I think we might already be there, definitely if including the livestreams :)

[@jullinnarcooper878]

Special effects and random clips from theorist and philosophers do not make sense when used in this way from those who are not common sense creators and managers of civilized, sane and equitable society

[@NotHomeAnymore]

As a PhD student, these videos really help when I need to take a break from the daily routine. Thank you Mr. Arthur 😀

[@LucasDimoveo]

My dose of optimism for the week!

[@crappycomputer77t1]

This channel has always gave me optimism. If you share what you learn from SFIA you can give others optimism as well. Because many people have negative, old and uninformed ideas about our future.

[@MandaiPL]

Thursday: arrives Me: I feel a sudden need to listen to a voice from the internet talking about the space, the future and all

[@georgethompson1460]

I think the nearest term version of a spaceport will be retrofitted oil rig used to launch rockets, after that we might start seeing purpose built spaceports.

[@MrKIMBO345]

SpaceX concept?

[@DJRonnieG]

I never read Peter Hamilton's work but I do recall in Hyperion that there were "Farcaster" portals which had communications lines running through them. This included CATV, HTV, and linkages from the local Dataphere to the Megasphere/Internet.

[@thebushwacker]

The first instance of wormholes being left open at all times for fiber optics and even a river that when threw many worlds to my knowledge was the Hyperion series of books. I believe the first one was wrote in the late 70s. The best series I ever read and started my love of books. Ending made me cry lol

[@lordgrunwalder1607]

Space ports? Finally a place for rest for the space pirates

[@sab1751]

Watched it on Nebula yesterday, great episode.

[@tonytone604]

Love how the content isn't necessarily in order. I can enjoy your channel at my own pace. Love the vids!

[@PlaystationMasterPS3]

I would imagine that you'd have "inland ports" near cities, and take a high speed train from the gate to the launchpad. something like the shanghai airport maglev, only the airport part is inland and you go from gate to train to launch vehicle

[@MrMakulit1959]

If instead of envisioning the space elevator as a cable, you envision it as an elevator shaft, super materials (beyond what we have) are not required. The shaft outer walls get thicker as you go up, the inner shaft stays constant. Cars ride up the inside on gears locking into ribs in the shaft.

[@ryandempsey4830]

Doesn't matter. Still grossly inferior to an orbital ring and an OR doesn't require super materials.

[@MrMakulit1959]

@@ryandempsey4830 there are a few issues with orbital rings making them technically more challenging than space elevators. One huge one that comes to mind would be the power requirement for propelling huge amounts of mass to greater than orbital velocity. And erosion of the tubes by those ultra high speed pellets. And recoil from the mass drivers required to get anything on the orbital loop to actual orbital velocity. And the several orders of magnitude more material required to build them, but hey, once those challenges are resolved, im sure orbital loops will be lovely.

[@calvingreene90]

Multiple teather space elevator system would allow you to send steam up one and being water down another bringing desalinated water far inland without the pumping costs.

[@Democlis]

at 29:00 i wonder if we could do all those wormholes possible if we would ever build a hub city, like the City of Doors that exists in Planescape, a place whose sole purpose is to serve as a giant central hub to every world/place we might have a portal take us too, so we could hop into a portal to said hub and from there take another portal to where we want to go, i imagine such a hub city setup would be much more convenient instead of having several portals based locally, so if you want to go to base in planet A first take a flight to New York, but for planet B the portal is in Paris, instead having a central port that takes you to (or is) the hub and from there you can go wherever you want.

[@linz8291]

If more spacecrafts has replaced to modern starships like you have mentioned as vlog 07:48, spaceports needn't to consider "space towers" types, but more quantum tunneling and time pulsar types. With regard to Sol highway transportation system, spaceports from Earth to Jupiter Moon are suggested more stations than from Ceres to Nibiru.

[@mizzshortie907]

Exactly what I needed to unwind after a long day at work ♥️have been watching and following your channel for a few years now and am so grateful I found your channel. Keep up the amazing , mind bending content! I love the ideas you have and where they take me mentally

[@rbdogwood]

One of the basic physics components that I find under-examined is the advantage of extending the space elevator beyond geostationary orbit. Anything beyond that point should pull up rather than push down, so the entire elevator 'weight' would be reduced. Also the orbital slingshot resulting from launching from beyond geostationary orbit would give a considerable boost of speed and that would also be in the solar plane, more or less for extra planetary travel toward the inner or outer planets depending on the point of departure from earth orbit.

[@suzieBirdoSum009]

Hey Isaac!

[@dav9104]

so fast

[@whereisangie]

i love listening to your videos. thank you for all the work you put in to making and sharing these😊

[@reformedfridge9578]

Excellent timing. Thanks for another awesome video!

[@jayboydakid8299]

I luv it! How all of this space talk is now BIG TALK!! I just hope I live long enough to see it all developed

[@drakebell6784]

These days IA's ceaseless enthusiasm makes me sad, I wish I could believe humanity has the ability to work together and do great things out in the stars.

[@crappycomputer77t1]

This channel has always inspired me towards optimism. Through addressing many current and future issues. Consider sharing this channel with friends and family. If we all were more optimistic than the outlook for humanity might not be so grim. This channel also lets you know that it is possible to change our future for the better, If we choose, if we truly want that as a species.

[@DzinkyDzink]

Humanity can't, neohumans will!

[@AssistantCoreAQI]

@@DzinkyDzink Star People! Wait Why Are Those Dragonflies Looking At Me So Ominously-

[@ts25679]

Could you use acoustic levitation to slow/stop the propagation of the sound/blast wave from a rockets thrusters to improve thrust? Like giving the propellant an air cushion to push off against like a double jump that also buffering against the noise pollution.

[@keith4154]

Another great post. It’s early here a good start to the day switching out from the crazy day ahead enjoying breakfast and listening. I really enjoy listening to your realistic possibilities to future developments of humans. A long cliff treacherous cliff we are currently climbing just to become a type1 civilisation with a future and not extinction ahead.

[@wildman8060]

Happy Arthur's day. Great to get these bois fresh.

[@theweldingpanzer4841]

Me: *acting as if I understand what all the big words and numbers mean* Arthur: *Keeps saying bigger numbers and words*

[@briann8911]

More episodes like this please!!!

[@futuratipodcast5130]

This is fantastic! There are many questions around space ports which I hadn't considered before, and I'm glad to see you covering this crucial next step in our becoming multiplanetary. Interestingly, years ago we interviewed a panel of experts on the space port they're building here in Colorado. Construction of this launch sites could also do a lot to power job creation and economic growth. So many reasons to be optimistic!

[@DingoAteMeBaby]

Loved the music in this one!

[@ceterfo]

I've been doing math for the last week on O'Neill cylinders the cluster form of O'Neill cylinders zoning out different cylinders for different purposes in population densities and then exporting population at projected cost ratios than what it would cost just for transportation. Man I'm so hyped for something we're not even going to "start" for another decade. Part of me doesn't want to die away from Earth but at the other hand man it would be great to get in on the ground floor of space.

[@jamescurrie01]

This is the perfect episode, with all the announced news about commercial space stations. Time to dream big boys - its gonna be a trip.

[@ryandempsey4830]

And a single starship launch will match them in habitable volume and be cheaper. Sorry but I laughed out loud when that orbital reef promo showed Boeing Starliners ferrying people up. An insanely expensive capsule riding on an expendable rocket. Sorry but everything is so dwarfed by the potential of Starship its hard to get excited about a private station controlled by old space and litigious assholes like Boeing and Blue Origin. SpaceX could launch a custom space station every few weeks and then land it, refit it for the new mission. Or send up modified permanent ships for a hugely titanic structure. And in the timelines the others are talking about their own ISS clones launching.

[@jamescurrie01]

@@ryandempsey4830 Yeah you're right. SpaceX could easily build a space station by leaving a few starships in orbit and tethering them together. This could create a even larger volume than the ISS at a tiny fraction of the total cost. From everything I've seen though SpaceX doesn't appear interested in building a space station. Which is a massive shame, but maybe in the future sometime.

[@shanewilson2484]

If you set up a space fountain active support tower you can set it up at the equator to avoid hurricane issues.

[@acemax1124]

Awesome 👏 I would like to see more of this episode 👍

[@acemax1124]

Floating launch pads looks great and maybe a precursor to space elevators 🤔

[@BigZebraCom]

I was going to build some spaceports--but then things got really busy at work.

[@rhuiah]

Great episode.

[@chrism.1131]

Space elevators are possible with current materials, if built in stages. At the center (G.E.O.) where gravity is virtually zero, multiple tethers would be used for added strength with no weight penalty. As you move out from the center, each stage would have fewer and fewer tethers to reduce the weight as you move deeper into the gravity well.

[@Nmax]

Very nice visuals. It would be nice to see this century but likely next century

[@duckhunter711]

I’m loving how long these episodes are getting

[@unintentionallydramatic]

Huh, isn't this two hours earlier than usual? Either way, this is perfect timing. A major part of my day just fell out.

[@DoglinsShadow]

Excellent video!!!

[@walterlyzohub8112]

How come you don’t mention of using a mass driver in reverse for landing? You know motors can be used as power generators so a funnel leading down to the surface can be used for electromagnetic braking by induction of the descending craft for places like the Moon. That’s what I get for being a degreed electrical engineer. Old idea from MANY years ago.

[@massimookissed1023]

He has mentioned them in previous episodes. I imagine it's easier to exit a rail gun than to enter one at speed.

[@millamulisha]

I’ve always thought Mount Chimborazo would be an ideal place to launch rockets to space. Very cool to hear you give it your stamp of approval. Is really an undeveloped asset to the country in which it stands. 👍

[@virutech32]

the andvantage of launching from the mountain is minimal & the logistical cost of building, maintaining, & operating a rocket launching complex on top of a mountain dwarfs the tiny fuel savings

[@millamulisha]

@@virutech32 Depends how many launches you’ll make.

[@awsumguy-bh9pz]

i dont know about other people but as long as the sound doesnt cause damage to my home i could put up with the sound of daily rocket launches. and airports are super loud too, in my city the airplanes flight path to the runway is directly over the downtown area so it is super loud but everybody is used to it.

[@businessbusiness9407]

Very strong episode

[@DanielGenis5000]

Oh just fantastic!

[@Lukegear]

Awe inspiring episodes weekly :D

[@JonahRoyes]

I love you from Jamaica 🇯🇲 your videos alway bring me joy

[@dsnodgrass4843]

I see these options being developed on settlements of other planets/moons before Earth; as the conditions would be "easier" to prove the concepts thoroughly in.

[@jonathanengwall2777]

A cut space elevator plopping down could be catastrophic

[@ibpositivemostly7437]

Cool video thanks.

[@jacoblaughbon3323]

Space ships that travel in space, will need to be built in space. We'll have hoppers to stations, then board the larger liners, like in the 5th Element. I'm sure once we get good at space travel, we'll have luxury liners.

[@kcflick6132]

These are the kind of videos I turn my phone sideways for

[@JustABill02]

Since electro-magnetism is essentially reversible, an electric motor is also an electric generator, could you land your craft on an airless planet (30:25) by flying into your mass driver, using the magnets to slow the craft down and storing the energy for your next launch. I haven't looked enough at mass drivers to know if this is reasonable, and keeping a high speed vehicle inside the mass driver might be a trick...

[@isaacarthurSFIA]

YEs you can land a ship with a mass driver but the concern is usually how you manage to make sure a ship coming in at hypersonic velocities to a narrow tube doesn't crash :) Its probably solvable but is usually the point folks worry about for regnerating power.

[@NeuroMayki]

very beautiful video) I liked it)

[@GreenBlueWalkthrough]

Your missing another metiod the Endless Bridge which is a 5 mile long massdriver that propels an Air/Space breathing space plane to superswonic or even hypersonic speeds to conserve the spaceplane's fuel. Which the spaceplane uses the atmosphere instead of ignoring it to get up high and fast. Then using it's spacebreathing mode much like the SR-71 blackbird has a ramair bypass mode over it's turbofan for the finally small push to altude and circlize the orbit. It's a rare concept with the popular fiction with it demostarted being Ace combat 5.

[@malcolm_in_the_middle]

I misread that as "Spacesports" and got pretty excited for a second there. I think that would be a great episode!

[@Varbos_Poet]

He already did it: kzbin.info/www/bejne/p2KUqGyLe5qpga8

[@raptorhunter5549]

We gonna look back at videos like this in 40 years and be like damn

[@melissaj2915]

It's cool to think of when this will be all official and real; imagine there being places like 'Los Angeles Interplanetary Spaceport'. Perhaps people will even get connection air flights to spaceports if there are only a limited number of interplanetary spaceports? So a connection Air France flight from Bordeaux to France's only spaceport in Paris, before taking a space flight to the Moon later that day.

[@lightningbrigade4722]

This video looks more like a killer video game then a documentary.🎓

[@acediasteffson7912]

I really enjoyed your video and Informative documentary 👍 Keep doing your good work 😎 Happy Diwali & Stay safe

[@dirtfox5259]

I hope one day whether its on Earth or beyond, you get a spaceport named after you for being such an inspiring visionary that you helped make it happen!

[@69Kazeshini]

I can see orbital rings on other planets but i highly doubt a bunch of countries would agree to having a megastructure above their territory.

[@virutech32]

for an equatorial OR there aren't that many countries directly on the equator & brazil is the only one with serious strength. also every single one of them stands to benefit massively from the 30 minute global travel time for personnel/freight & have no one actually has any claim on orbital space anyways

[@solanumtinkr8280]

Such a compressive mass as a tether and it's support structure may place on the crust of the Earth, I would want to make sure that is not going to tip some minerals over the edge into a transition, if that mass is sufficient and it is already hot enough. That transitioning mineral will produce an earth quake like shock, now maybe that would be negligible but I would hate to be wrong about that....

[@iichthus5760]

The Fermi paradox leaves open the possibility that interstellar travel is in fact impossible or too expensive to justify the effort.

[@KellyStarks]

Nit on space elevator as a way to travel between points on earth. It’s currently thought you can’t climb them at more then 200mph without damaging the cable material (which is theoretical material, but they seem to assume nano composite in most analysis). That’s days up and down. So not faster point to point then aircraft.

[@ProperLogicalDebate]

I understand that either he or his employee wanted to honor him and designed a unit of measure.

[@bluekoolaidg1904]

Isaac, I'm bout to get out the Army after a decade brother... how do I be a normal person again 🤣

[@dirus3142]

The scram jet model looked very familiar. Then it hit me. EJ SA a KSP streamer built a few very similar designed SSTO ships with that basic design. He built them a few years ago.

[@KellyStarks]

I wonder if rocket ramjets, or ducted rockets could be made much quieter per ton of thrust then straight rockets? Similar air mixing lowered the db of jets a lot. Perhaps the same could drop the DB of rockets.. and a ramjet around the rocket can up isp by a factor of 10, which is good too. ;) These would by the way allow personal space ships get to orbit with lox and normal fuels. I did some studies on this to make a suborbital biz jet sized craft, that could also go to orbit. Long, say 10k mile, suborbital biz jets could have a significant market. Said market giving the economies of scale to drop cost to orbit a thousand fold. Even if launches to orbit are comparatively few.

[@prins424]

Have you looked into quantized inertia? If true it would have a big impact on space travel, among other things. Even if one considers it unproven at this point, it would make a great subject for a video.

[@Scrogan]

The orbital speed required for a low-lunar-orbit is about 1.7km/s. A mass driver sounds pretty easy to build for that. I wonder how quickly we could construct an orbital ring around Earth using lunar materials? Or if ground-based active structures would be worth building beforehand?

[@deathsyth8888]

You know how the saying goes, "Any spaceport in a space storm."

[@abhijeetdeshpande1057]

Hi This is Abhijeet Deshpande and.... I have already proposed my concept of space station to NASA, ESA, RusCosmos about creation of orbital space stations and orbital space launch and fuel - refuelling stations called as Jump Launch Space Stations - JLSS. These would be reconstructed from recycling junk orbital satellites and other systems floating around orbiting earth in space. These orbital space launch platform's would also function as space stations. And will launch shuttle rockets right from orbital space outside of planet earth. To Moon, Mars, and beyond.....🚀

[@JackDesert]

8:52 Issac Arthur: Using rocket launches as a kickstarter for floating island seasteading doesn't seem to be viable Nevada nuclear hotels in the 1950's: worked well for us

[@hunam1464]

One day, you too can command your own Rock Hopper.

[@timothyortiz2222]

No engine is capable of getting even to the nearest stars. I'm happy right here.

[@caseyconnell9336]

How might having these large, conductive towers essentially sticking out past our atmosphere like a giant antennae, impact our weather/climate, lightning, magnetic field?

[@virutech32]

well since they are rotating at the same speed as our planet, atmosphere, & magnetosphere probably not at all.

[@rock_ok]

too isaac arthur I like your video so much. it really is a tomorrow's reality. thus if only we can make a spacefaring civ like the fictional eldar craftworld it would be great. in order not to be extinct.

[@jonathanhensley6141]

Every video you do is hardly glossed over in scyfy series and movies. A series dealing with near future space ports and orbital infrastructure.

[@bengoodwin2141]

If I had to guess, you'd have a spaceport at the upper end of a space elevator, with an airport at the bottom. Then you just wouldn't bring the ships down to earth, but maybe attach the ships themselves to the elevator to bring it up to the spaceport if it's built on planet

[@erikoftheinternet]

You note at 12:00 that space elevators require materials we don't have yet It's worth noting that some serious designs like space fountains do not

[@ryandoesstuffapparently1540]

Got my drink and snack ready.

[@ChrisLyons]

One thing I never see mentioned by anyone talking about space elevators: mass. China built a damn/reservoir that used far less mass than a space elevator would require, and they changed the moment of inertia of the earth. The entire planet. From a damn. In China. A minuscule about, but enough to be measured. Now image orders of magnitude more mass hanging out like a giant lever pushing against the earth.

[@therundown5208]

A airport that launches Rockets will be called in the future a. SA port

[@Blaxjax21]

While living in Fla I took my family to watch a shuttle launch, it was a lot louder than sitting on the steam turbine engine of a USA cruiser.

[@horatiohuffnagel7978]

All these cool great ideas to get out in space and off the planet but have you ever covered space debris. There's so much garbage up there wouldn't it have to be cleaned up before any super expensive project begins?

[@WaterspoutsOfTheDeep]

Wish he would talk more about how life would change and the social implications in these videos. I feel like he did this more in his videos 2-3 years ago which made them more interesting.

[@kevinw2592]

I've wondered about the multiple tether space elevator for a while. I get the finished product balances itself. But how do you build it? A single tether just drops straight down, ignoring any sway. But to build multiple tethers, you need to propel them away from centre as the drop. Do you suppose some form of rocket constantly pointing them in the desired direction as they drop? Or dropping them straight down, then trying to manipulate them from the surface? I don't see a reasonable solution to this problem.