Traveling Around Other Worlds

In the future we will journey to new worlds, but how will we travel around on them?
Visit brilliant.org/... to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription.
Join this channel to get access to perks:
/ @isaacarthursfia
Visit our Website: www.isaacarthur...
Join Nebula: go.nebula.tv/i...
Support us on Patreon: / isaacarthur
Support us on Subscribestar: www.subscribes...
Facebook Group: / 1583992725237264
Reddit: / isaacarthur
Twitter: / isaac_a_arthur on Twitter and RT our future content.
SFIA Discord Server: / discord
Credits:
Traveling Around Other Worlds
Science & Futurism with Isaac Arthur
Episode 339; April 21, 2022
Produced & Narrated by: Isaac Arthur
Written by:
Isaac Arthur
Jason Snyder
Editor:
Darius Said
David McFarlane
Cover Art:
Jakub Grygier www.artstation...
Graphics:
Fishy Tree
Emory Stagmer
Jarred Eagley
Jeremy Jozwik www.artstation...
Justin Dixon
Katie Byrne
Ken York / ydvisual
Mafic Studios www.maficstudi...
Mihail Yordanov
Mike Munt www.artstation...
Rapid Thrash
Sergio Botero www.artstation...
The Ashdale Regiment
Udo Schroeter
Music by:
Markus Junnikkala, markusjunnikka...
NJ Mandaville / @njmandaville8213
Stellardrone stellardrone.b...
Miguel Johnson migueljohnson....

[@tscomponents33]

Can everyone appreciate that these videos are not filled with ads?? Thank you sir!

[@jamesodom4980]

I know right. I have a hard time with JMG videos because there’s so many ads. Thanks, Issac. For keeping the ads relatively low.

[@Kremmer_]

Indeed!

[@kundeleczek1]

Laugh in YT Premium.

[@bassmanjr100]

@@JRAD897 Issac Arthur not laughing that he puts a lot of work into these video for people that suck like parasites because there are CSOBs.

[@aone9050]

@@JRAD897 ooh killem

[@phoenixsong38]

"On mercury the sun hates you more than it does vampires" -Isaac Arthur, 2022

[@sizanogreen9900]

honestly I'd like to ask what vampires think of this quote once they set foot on mercury. But I'd assume they'd have turned to piles of dust even before landing.

[@TheScienceTube]

Great said

[@ProfessorJayTee]

Long as the sun doesn't make me "glitter" I'm good, thanks.

[@stevenhetzel6483]

Vampieoours*

[@nyrdybyrd1702]

​​@@ProfessorJayTee I still can't believe she penned a pack of preternatural pansies. 🤦‍♂️

[@brandonkline1367]

A year and a half after finding your channel, this is my first episode as a fully-caught-up listener. I'm going to miss being able to binge several episodes a day, but I'm still looking forward to years and years more content from this channel. Thank you for making my workdays a little brighter, and until next time, have a great week!

[@hokutomaster89]

Cant agree enough with you, my buddy told me about sfia years ago when i was doin lawn care. Hours and hours out in the sun learning about awesome stuff mostly beyond my comprehension. Thank you isaac

[@innocentbystander3317]

You are always welcome to rewatch/relisten to episodes. In fact, I encourage it. You would be surprised what you missed due to wandering minds..

[@kingmobplays]

Love to hear you're taking flight lessons, I'm a pilot and I love seeing more people get to enjoy the beauty of flight

[@unbreakableldorado7723]

CO2 emissions are the only major issue regarding that, the CO2 footprint is insane..

[@kingmobplays]

@@unbreakableldorado7723 yeah unfortunately, I’m personally training to be an airline pilot, which is fairly efficient long distance

[@unbreakableldorado7723]

@@kingmobplays yea, I mean if just 0,1% of the developed world decided to become hobby pilots, that would seriously mess with any ambition to reduce emissions. We need electric planes ASAP..

[@hoominbeeing]

@@unbreakableldorado7723 The major environment k1ller is people continuing to buy animal flesh

[@unbreakableldorado7723]

@@hoominbeeing true. Still, emissions related to planes grow rapidly as well..

[@kobebarka8633]

Hi Isaac I’m writing a sci-fi story and I was wondering what the effects of a large Coronal Mass Ejection would be on a developed space industry(such as space stations)? Thank you for all your hard work!

[@TheScienceTube]

Great Idea to capture the CME, wow, I din not thought of that.

[@Blaze6108]

Being hit by a CME is no big deal for most equipment as long as it's properly shielded. Humans wouldn't like it. Realistically permanent human settlements in space would have some kind of directional shielding (since the CME only comes from one direction). Alternatively, if shielding the entire station is too costly, they could have a fortified "vault" with a smaller shield where all human inhabitants would rush to in case of a CME (this is also how the real International Space Station does it).

[@kiwishizzle]

It depends on the type of technology being used (is your book set far enough in the future that computers use photons instead of electrons, are quantum or biological computers used in your setting, etc.) and how prepared the people are. It is possible to shield against the effects of a CME, so it's your choice as the author to decide how badly impacted your civilization would be.

[@randysmith9715]

@@Blaze6108 AND the ISS crew may have to in a day or two!

[@johnharvey5412]

@@Blaze6108 since it only comes from one direction, the shield needn't be very close to the station... I think you could actually make it much smaller by having it closer to the sun, and perhaps turned perpendicular most of the time (to allow sunlight to hit the stations' solar panels), and flip into "shield mode" when a CME is detected or when the station is getting a little too hot.

[@genkidamatrunks6759]

"Roads?" "Where we're going, we don't need roads!" ⚡⚡

[@dard1515]

17:09 I'm playing Astroneer where I have an RTG and solar panel to keep my rovers batteries charged at all times. Just having fun with the game, I hadn't even thought about it being a viable strategy in real life.

[@mill2712]

This is a topic that I always wondered about. When we get to other worlds and have colonies you'll need to be able to go from settlement to settlement if you want each colony to prosper and every world is different.

[@murasaki848]

So Scott Manley finally started taking flying lessons, and now Isaac Arthur is learning to fly as well. Excellent! Even if getting a license isn't in the cards, everyone should take the yoke at least once in their life. Especially those who talk about flying a lot. :D For anyone considering it, most flight schools offer an introductory flight where a certified instructor will show you how do the basics such as a coordinated turn. It's an experience you'll never forget.

[@yournan5372]

Idea for another video: What would we wear on other planets? IE. suits, helmets, armor

[@professorracc.9780]

that intro image of people hang-gliding on venus is completely insane Wouldn't you be terrified of plummeting into the infinite void of crushing sulfur below?

[@fluffysheap]

Falling off a hang glider is probably fatal on any planet. You just get to pick whether you die when you hit the ground or before.

[@popularmisconception1]

@@fluffysheap especially on Venus: Open the backup chute? no - die by hard hit, yes - die by heat

[@professorracc.9780]

@@popularmisconception1 ok but dealth

[@askani21]

Well, we do swim on the surface layer of the ocean and go on boats. When you think about it, the ocean depths are terrifying and deadly too!

[@professorracc.9780]

@@askani21 well, you float in water, and a boat doesn’t sink the moment it runs out of fuel either, whereas on Venus, one problem with that hang glider and you die.

[@ENCHANTMEN_]

It occurs to me that roads on low gravity planets could easily include jumps in them safely. Even if you somehow missed it, emergency thrusters could easily set you down safely. You could have vehicles precisely control their speed and orientation to jump from one place to another without needing to use any sort of propellant, effectively giving you short-range aircraft that can be powered entirely by electricity.

[@mrjava66]

Actually you can design a mars vehicle with limited shielding. If you are in vacuum, you only need shielding on the side that faces the humans. That takes away about 90% of the shielding. A large vehicle powered by a nuclear reactor on a vacuum or near vacuum world is easier that you state.

[@05Matz]

I think he means shielding from cosmic radiation, not just your reactor. The cabin has got to meet at least SOME kind of safety standards for above-ground habitation on a planet without much radiation shielding of its own, and if this is permanent 'civilian' habitation, rather than just an expedition, these are likely to be fairly strict, at least until we have very good medical technology to reverse radiation damage.

[@anthonyhall7019]

I love how EVERY SINGLE PROBLEM is filled with a solution, you are extremely smart and that is how human exploration is supposed to be done, thank you sir!

[@lghtosumun]

Me ha flipado la estación entre Pluton y Caronte, que chulada.

[@swedichboy1000]

I have always wondered this; if you had a space station, not in orbit around a planet but in a stable cis-lunar orbit or the like, if you attached a small asteroid to a pivot that acted as a generator with the torque, would it act as an infinate source of energy as there would be no air resistance to slow it down?

[@owenorourke7517]

It would not be infinite as there would still resistance from the magnets and coils inside the generator as well as friction from any ball bearings used in the pivoting mechanism.

[@xXx_Regulus_xXx]

@@owenorourke7517 yep, if you think you've discovered free infinite energy it means some process isn't being taken into account

[@DFX2KX]

The comment about stairs at the end immediately got a "Talk about leg day" out of me.

[@jmd1743]

I can see aliens bringing up roads as the first topic that they talk about. "How did your governments not go bankrupt maintaining all of those roads?"

[@johnharvey5412]

Our response: "wait, your governments aren't bankrupt? How did you manage that?"

[@richardgreen7225]

Make every road a toll-road. RFID tags on the vehicles provide the input. Your account would simply be debited as your vehicle crossed the RFID readers according to the ton-miles implied.

[@jmd1743]

​@@richardgreen7225 It's a joke. Roads are a never ending toilet that you flush money down compared to something like building a desalinization plant. We'll require thousands of them for the USA in order to pump water out from the coastal regions. Water tables across the America will soon begin to collapse because once the SW collapses as those people will flee to other states , which will place pressure on water tables that have more water being taken out than being put back in. We'll need thousands of desalinization plants and as many nuclear power plants, as well as an extensive water distribution infrastructure that's as sprawling as our road,electrical, or Natural gas line networks. Yet unfortunately we have people who only want infrastructure they'll use in their short remaining lives. People demand that we invest money into the grid to improve it while the individuals argue that we can't use EVs because the grid can't handle the new demand. Meaning they want the Grid patched up to not be inconvenienced in life, but not upgraded to support the next 50 years of population growth & needs. This is why I support a Martian colony, to get away from those short sighted individuals. Yeah it's tough & dangerous life on mars, but at least on mars you don't have a "fuck you, got mine" mindset to deal with.

[@innocentbystander3317]

Wait, our government maintained any of our infrastructure? Last I checked, budgets for such have been bled off, which is why they need new taxes to build new things instead of properly managing already existing budgets for these things.

[@jmd1743]

@@innocentbystander3317 It's a joke referring to the aliens having teleportation technology and how we're financing the maintenance of old infrastructure with new tax sources as the previous sources were never enough because of poor urban planning that doesn't account the need to be able to maintain the infrastructure once built. You built communities so watered down with thin density that the tax base can only support say 1000 homes, yet you built 5 times that much in maintenance expenses. That's why it's called a Ponzi Scheme. So the joke is that the government has to admit to the aliens that it can't afford what it built to the aliens who haven't drove around in thousands of years because they teleport. It doesn't matter if you slap down light urban rail, you built the businesses, homes, and government facilities so far apart from each other that everything is paid with debt. I care about fiscal sustainability of communities while others care about environmental sustainability which i also like. America values quantity and not quality, essentially communities like Texan communities are boom towns that are essentially phones you throw away after a few generations. People will eventually move away from Texas leaving behind communities that require 5x or what ever the tax base that they never actually had.

[@mikelfunderburk5912]

Happy Arthursday! Thanks to all involved!

[@GoblinsCorner]

You'd probably enjoy Ian M. Banks "Culture Series" books. It's all post scarcity, way in the future, but they go into how humanity lives on orbital plates or on large ships over living on planets, due to many of the reasons you've mentioned.

[@smorrow]

I guarantee you he's read them.

[@erichtomanek4739]

Unfortunately you missed the best way: Genetically engineered Dragons, as done on Pern, in the Rukbat sector of space.

[@linz8291]

Draconians and humanoid ET are same galactic members to develop habitable extroplanets.

[@airborneranger-ret]

Sailing is similar - the trip is the fun

[@mastercharlesdiltardino8058]

Isaac just won't let up with the content! He should be way more popular

[@TheScienceTube]

Its popolar enough, his channel will grow more

[@ontoya1]

As an aspiring hang glider and someone has been on your channel for years I love how you always reference them when you get the chance and that intro is just majestic

[@Cmdtheartist]

I give a Like before I watch the video. That's the level of trust I have in you, Isaac.

[@TheScienceTube]

Me too

[@greggweber9967]

23:49 Protection decreases as the consumables are consumed so that when the radiation pulse hits near the end of your mission you will have little protection.

[@atk05003]

I've seen researchers talk about possibly compressing waste into tiles, which could then be secured to the hull of the craft to replace the shielding as consumables are used.

[@pauliusUwU]

@@atk05003 that would be pretty crappy

[@shorewall]

​@@atk05003 In the age of steam, ships would store coal in the walls of the ship, to act as a little extra armor. As the coal was used up, you had to replace it with something so your ship didn't tip over, so they used sea water. In this example, you aren't going to use up your water. You are going to recycle it, so it will always be there. Same with Oxygen. If we were using something that got used up, we would have to replace it, maybe with methane, oxygen, or hydrogen from the spacial environment.

[@MrMonkeybat]

If you have a maglev train on an airless world you can go very fast then as soon as you reach orbital velocity the tracks become superfluous. So high-speed transit between cities on the moon you only need the tracks at the beginning and end, the cities can just lob the passenger cars at each over. A maglev becomes a mass driver. On airless worlds, orbital rings and space elevators seem superfluous as those tasks can be done by ground-based mass drivers. On small worlds, without scorching cores, you can also drill holes through the middle and use free-fall gravity trains.

[@petersmythe6462]

Keep in mind Mercury is also a pretty decent blackbody. Carrying your reflective parasol around with you doesn't protect you from radiant heat off the ground.

[@shorewall]

Roll around in a reflective hamster ball? :D

[@ponyote]

Flight is a lovely thing.

[@TheScienceTube]

Great, I can wait to watch it, I have my popcorn already.

[@jimshockey6789]

It's not healthy to go with just a snack and no drink. :)

[@TheScienceTube]

@@jimshockey6789 I know but mr. Arthur which is not a slim guy always encourage this LOL

[@TheScienceTube]

Mr. Arthur is not a slim guy wt heck is telling us to eat and drink high calories products

[@42option]

I seriously love your channel! Thank you for your content and I hope you come to Australia one day. It's an amazing world to explore. Thank you again for such amazing content.

[@TenorCantusFirmus]

I was just thinking about bringing cars to a super-Earth with denser atmosphere... No forced induction needed, the denser air will make you having more power without any modification.

[@InquisitorMatthewAshcraft]

Carl Sagan looking down from heaven at Issac and smiling 😃

[@MrTaxiRob]

one tungsten rail system around the equator hauling habitats on the dark side and solar panels on the bright side would be cool

[@jeffgraham9208]

Another fine presentation; special shout-out to the new addition to your team, to whom you credited the idea.

[@r0cketplumber]

Streamlined sky bikes flying along the axis of an O'Neill colony would be great fun, with wings large enough for sustained flight at maybe one tenth gee, and an electric assist to help you climb back up if you stray off the axis. Plus a reserve chute, of course.

[@maryt7959]

Mister Isaac . Your work is fantastic More people should study the universe and the way it works. I am dreaming at Galactic and Intergalactic travels already and the futuristic ways to make this happen. Your channel is the best at explaining science and the future ! Congratulations!

[@robertgraybeard3750]

Isaac - I was pleased that at 27:17 you mentioned that, unfortunately, science fiction has a tradition of planetary chauvinism. Indeed, large habitats in free space, rotating for artificial gravity, will surely be the way humanity will expand out into the solar system. There will certainly be settlements on large bodies but their primary purpose will be mining and exporting materials for the building of habitats in space (and solar power satellites).

[@talonvoidgeist2386]

Thanks, Homestar Runner! Very informative.

[@petersmythe6462]

Thin, hazy, non-oxygenated atmospheres with mushy terrain on relatively high gravity worlds: "Your subscription to transportation has expired."

[@shorewall]

Build tethers to a planetary ring. :D

[@imonbanerjee2997]

Good morning Issac. Thanks for your new uploads. Very enjoyable.

[@jorath9644]

i really like the moveable city concept for mercury, with such a long day/night cycle, what would be the speed a mobile city would have to have to like 'chase the sunrise' that it stays save from radiation or burning itself ? (sorry that kind of math is way out of my reach)

[@BrettCaton]

Goddess on the mountain top Burning like a silver flame The summit of beauty and love And Venus was her name. She's got it Yeah, baby, she's got it I'm your Venus, I'm your fire At your desire Well, I'm your Venus, I'm your fire At your desire.

[@scottthomas6202]

Saturn's Children by Charles Stross mentions mobile cities in Mercury, as well as floating cities in the atmosphere of Venus...

[@rhuiah]

Great episode.

[@jacktribble5253]

I knew the Yeti were aliens! I told them that's why they couldn't find any remains. They take everything back with them. At least they are polite tourists...

[@johnharvey5412]

Pack it in, pack it out! All life on Earth is descended from a careless Yeti leaving the equivalent of a banana peel in the primordial ocean.

[@stormhawk31]

Throttleable rockets would work great for thrust on Mars. Perhaps something like VASIMR would be what we need?

[@nil981]

Teleporters would be the truly universal transport method on any given world.

[@virutech32]

If it was possible, cheap, & people trusted it

[@SuLokify]

I wonder what the winds are like at altitudes we could reasonably float around at. There might be some way to sail rather than requiring powered flight. Interesting to think too that instead of parachutes we might use inflatable balloons to escape a failing aircraft.

[@AlexPoucherGaming]

Great way to start the morning

[@drakedarkest1627]

13:50 so far, you been describing sky of arcadia.

[@gummigumm6973]

Got my snacks and a drink. Cool subject.

[@OpreanMircea]

I love the new animations, they are awesome

[@Quentonitron]

You have to read the Golden Age by John C Wright. It has a scene where the protagonist has to use the stairs from an orbital ring.

[@xander2853]

Bipedal walking is hard but spider or centipede like vehicles are pretty practical

[@skaltura]

7:00 that tractor reversing has it's wheels turning to wrong direction :)

[@linz8291]

Such as Zeta Grey misleading human to create weapon mechanism and attack us by AI during Dulce war?

[@jasonbouvette1077]

Imagine a super stol in a thicker atmosphere! 😍

[@robertmiller9735]

Anyone who's played Kerbal Space Program knows the problems with driving wheeled vehicles in low gravity. Jumper cars might be useful in places with a few percent or less G. Mars cars might use silane fuel for combustion, as it can burn in carbon dioxide air. Though I think fuel cells is the likeliest power source for cars on other planets; they could even store the exhaust for processing at fueling stations.

[@truthseeker3236]

Keep it coming thank you

[@atlanciaza]

I love watching your videos, it always gives me great Ideas. Thanks Isaac for another master piece.

[@MrMarq22]

Expeditionary force is a great book series. It's a must read.!!

[@annoyed707]

Years ago I thought of a tether for transport between the two bodies of the binary asteroid 90 Antiope.

[@N.M.E.]

So basically you are proposing Jawa sandcrawlers on mars? I'm all in!

[@superakman14]

First Scott Manley , now Isaac Artur. Maybe i should also get flight lessons. Fly safe.

[@drakkondarkspell]

Hyperloops between domes on Mars. Automated with regular schedules.

[@kayakMike1000]

Kayak. I would travel around in a kayak, I always imagine a planet that's just like the Superior National Forest and the Quetico... That planet is named NorthWoods.

[@milogardner9951]

Imagine on mercury a festival when it's about to turn from night into day. Where instead of being rationed on power we're able to have every light on and indulge because the solar power will just refill it. Having to live in a power rationed society and allowed during a festival to just turn everything on all at once lol

[@robertkesselring]

I appreciate the hang gliders. 👍

[@bbirda1287]

Once scientists unlock small fusion generators in 10 years, Starship's transit to Elon City on Mars is going to get a lot cheaper and faster. Then, bring on the metal-rich asteroids and post scarcity livin'! (well, it is sci fi, so one can dream)

[@greggweber9967]

26:30 Wouldn't at some distance the mutual gravity have a real effect? Think of the transition between two orbits and station keeping during a roundevue.

[@egoalter1276]

Pluto and charon are mutually tidally locked. There would be no stress on the theoreticalspace elevator, save for its own weight. It would hang from the section that intersects the lagrange point towards both planets.

[@389293912]

If one asteroid "harpoons" another one with small relative difference in trajectory. and the two get joined by that tether it's going to be a spinning barbell with each asteroid being a bell. Bingo, free spin gravity.

[@friendoftellus5741]

I really love your very intelligent videos !!!!

[@Cartoonicus]

For some reason, I thought that mercury was tidally locked.

[@digitalnomad9985]

Books written before 1965 thought it was.

[@kreynolds1123]

Earth's moon has long days making energy storage important or substitute radiologic sources. Maybe large metal cylinders could be electromagnetically launched on a day side of the moon and electromagnetically captured on the far side where it's dark. Thus transferring energy from one side to the other.

[@virutech32]

at that point you may as well just use some cheap orbital mirrors so that all your concentrated solar ground stations were permanently lit. Lighter, cheaper, faster, lower losses, etc.

[@anarex0929]

We need to research electron conversion from direct heat. Not conversion to steam then turbine. Something that doesn't require super conductors.

[@petersmythe6462]

Nuclear reactors can be made pretty mobile (the SLAM could blast out nearly a Gigawatt from reactor small enough to fit in a large cruise missile). It comes largely at the expense of cost and safety though. We're talking HEU reactors, Plutonium reactors, etc running with no or minimal shielding. There have been concept studies for fission-powered cars though. The main issue is that it needs an enormous weight of shielding and that if you drive a gasoline car off a cliff, it releases a full tank of flaming gasoline into the environment. I.E. the nasty stuff it will be using for the next week. If you drive a fission car off a cliff, it releases a comparable weight of fissile material and fission products into the environment. I.E. All the nasty stuff it will ever use in its lifetime.

[@vincentcleaver1925]

"Sunrise, sunset. Sunrise, sunset..."

[@wompstopm123]

DUDE i want to see arcapellago asteroid belts in kerbal space program 2 i cant wait

[@WynterLegend]

Praise the Omnissiah! Bless the Sacred Sands of Mars!

[@FidoZip1988]

In the Red Mars Saga there are colonies on Mercury, but they are movil, in a rail that with the sun heat the metal expands and makes the cities move.

[@FidoZip1988]

@Eduard Medrea Shit, I made a mistake, fucking smartphone

[@DanielGenis5000]

Oh, I have to add, I’d also like to travel the River Tethys, from the Hyperion Cantos. Of course, it winds its way both around other worlds and between them!

[@TheScienceTube]

LOL...nice meomries, I have read the Dan Simons series. Rivals with Dune and Foundation.

[@DanielGenis5000]

@@TheScienceTube yes! I’d add Iain Banks’ Culture series and Alastair Reynolds’ works as well.

[@DanielGenis5000]

@@TheScienceTube yes! I’d add Iain Banks’ Culture series and Alastair Reynolds’ works as well.

[@serrece]

Can you reset your curiosity stream if you are locked out of the email that you set it up with and as always I love watching your well put together and calm science thank you Issac Author you gave me a one month free suspicion last year the Good Scientist

[@michaelstjohn4665]

Jason Snyder is an editor? So is this the Snyder cut?

[@iamjetflight]

We all know that future civilizations will find ways to mess up the traffic and public transport network timing, too. "Cool, a delay on the damn orbital ring."

[@ChaJ67]

Something to think about with an orbital ring is it would be all computer controlled, so then it comes down to waiting on the ground for a time slot to go up. At this I came up with you could use inflatable towers or active structures to get to and from the ring, which would be inherently higher capacity than a tether attached to the ring. You can also do things like have a high temperature superconducting power line in the shadow of the ring to help it keep cold as we are still talking very cold temperatures here and orbital power beaming to the ring from a constellation of satellites not too far above the ring, but far enough to have very little drag on the solar power collectors and radiators. The importance is trade on Earth is measured in gigatonnes per year, so if you could do all of the right tech and tricks, you might be able to get a ring that circles the globe and provides easy access anywhere in the Earth-Moon system and beyond up to yearly global trade scale of capacity. Think of the implications of that.

[@johnharvey5412]

Or they'll let GM lobby public transportation into near oblivion like they did in the US, spreading the suburban hellscape to the stars.

[@digitalnomad9985]

"If all the cars were placed end to end They'd reach to the Moon and back again, And I bet some poor fool would pull out to pass" -Jerry Reed "Lord, Mr. Ford!"

[@gisli12]

I would like many screenplays made by you turned into netflix series!

[@colinsmith1495]

I would love to see a mission to Venus just to test out a few float/fly ideas. Have one central communications hub designed as a blimp that just stays in place, or only moves slowly, with the intent of testing a steady base for a habitat. Then have several other probes that launch from it, or at least talk to it, to test solar powered flight, solar powered blimps, and some mixture of it. Combine that with some sensors to learn more about Venus' surface, atmosphere, weather, temperature differentials, etc. and you could get a truly viable scientific mission to also re-spark mankind's imagination for space travel!

[@linz8291]

Think about mushroom cities and how to build some settlements in the mountains to Venus, bro.

[@connorgahan5197]

one scp is called scp 201 which transports people to an alternate universe earth in that universe spins as slowly as Venus and is entirely devoid of all complex life

[@sizanogreen9900]

Sorry but about the whole fuel as radiation shielding idea: Wouldn't it mean that you could never really significantly exhaust your fuel since if you did so you would lose your radiation protection?

[@MeesterG]

Hello Isaac Arthur :D A thought just popped into my mind. What is humans are somehow lucky that their physiology allows to survive in microgravity? Could this maybe a really uncommon trait asking alien races? I guess this would be a better question for a biologist, but I know you've given alien physiology a lot of thought before.

[@theonedad7071]

Hey Isaac, do you know how to replace a toilet flush valve. Because Rodger Wakefield in the previous video was very informative. 🤘🤓🤘. In the SFIA chronological.

[@sciencerscientifico310]

Transportation on other planets and moons. Trains - railroads could be built on Mercury and most large moons such as Luna. These would be akin to trains and subways on Earth, albeit pressurized.🚂🚃🚆🚇 Rover buses - primarily on Luna and Mars. These would be pressurized and the long distance rovers would have sleeping, dining and bathroom facilities🚞 Aircraft - Venus and Titan are just about the only worlds other than Earth that aviation would be feasible on. Imagine flying around Venus at the 50-70km level. It could even go down to 30km.🛩🚁 Liquid travel - Unfortunately, water travel will be out of the question on all other worlds (except Titan) until they can be terraformed. The sole exception would be on small lakes and rivers in the habs themselves.⛵🚣🚤 Personal vehicles - Within the settlements, small personal vehicle could be used, like bicycles. 🚲🚲

[@Mr.Nichan]

Carbon is easy to get on Mars from the CO2 in the atmosphere, so the only problem with artificially producing fossil fuels as a secondary power source for vehicles is the hydrogen, which of course is in H2O, which is less common on Mars than on Earth, but still pretty common in the atmosphere and in hydrated and hydroxide minerals. It's also true that there are other chemical fuels you could use if your going to artificially produce them anyway. For example, there are chemicals made of only carbon and nitrogen, and I know that one such compound was developed for use as a propellant for missiles because the lack of hydrogen means it won't produce H2O in the exhaust, which tends to condense to form highly visible clouds. You can also extract metals like aluminum, magnesium, sodium, or potassium, from rocks and burn them with oxygen, if you can figure out a good way to harness energy from burning that doesn't produce much gas, but still releases a lot of energy as heat and light.

[@politicallycorrectredskin796]

Not sure why, but I was hoping for pogo sticks.

[@acadiano10]

Mars: so the Jawas were right about those Sandcrawlers?

[@Yaddlezap]

Lead-covered wagon.

[@digitalnomad9985]

3:30 [tide locked] "... as most inner planets will be to their primary." I hear this assumption about exoplanets a lot, especially planets orbiting in the "Goldilocks" zone of a star smaller than our Sun. It seems a bit premature. We only know the rotation rate of 8 planets, and though the solar day of both planets closer to the Sun than Earth is LONG, NONE of the planets in our solar system are tide locked to Sol (in the usual sense of one side permanently pointing toward it, rather than a resonance between rotation and revolution, as on Mercury, and few of the sub-planets and asteroids are), and (less significant because of the smaller sample) two of the three planets nearest our Sun's Goldilocks zone have very Earth-like rotation periods. Of course, I'm sampling one star system, and it may be unique, but none of those assuming tide lock have bothered to SPECIFY a uniqueness that is likely to make the rotation periods of local planets unusual. At any rate, the tide lock assumption is theoretical, not empirical. Remember what they said at JPL after the Voyagers' grand tour: "We used to think we knew about planets."

[@domvasta]

For Mars, having the nuclear reactor and generator assembly on a trailer, projecting a grid of lasers around it as an exclusion zone, should be adequate, reducing the weight shielding needed, when it comes to radiation sources, distance is better than shielding. On Mars, I imagine huge, tracked, relatively slow moving land trains with earth moving equipment powered by batteries and cables, clearing the way for future expeditions, or even laying down rail lines behind them, once settlements are established, if we could clear a track around the whole equator, that could serve as the future site of a superconducting ring which we could use to create a planetary magnetic field, which would stop the solar wind stalling our attempts to create a thick enough atmosphere that pressure suits no longer become necessary, moist enough that dust storms become more manageable in size and we can walk around with just breathing masks, kind of like we do on Earth since 2020.

[@grambo4436]

15:51 Please tell me what track is playing in the background

[@austincarroll1272]

Honestly a nuclear powered submarine with some tweaks would work great as a land ship on mars

[@connorgahan5197]

that is why scp 249 is dangerous but only by accident