Traveling Around Other Worlds

[@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. 🤦‍♂️

[@annoyed707]

"What have the Terrans ever done for us?" "Well, what about the roads?" "Right. OTHER than the roads..."

[@some_haqr]

Ha nice

[@chaomatic5328]

I don't get the reference... Is it from The Expanse?

[@MeesterG]

Aqueducts?

[@oldmanramblingatclouds]

@@chaomatic5328 Monty Python's Life of Brian - the joke is that in Roman-held Judea, a bunch of rebels are discussing why they should rise up against the Romans. One guy asks "What have the Romans done for us?" and the others begin listing stuff like roads, aqueducts etc.

[@sciencerscientifico310]

What has the government ever done for us?

[@Jcewazhere]

Mortal engines on Mercury sounds cool. They don't even have to go as fast as they do in the book/movie, just a few times walking speed to avoid bad terrain and keep up with the terminator. They'd be neat on Mars too, but Mars has enough air for some flight.

[@HowlingWolf518]

Everything breaks down eventually, though - hope they can handle a full day/night cycle while they're undergoing repairs.

[@robertgraybeard3750]

Jcewazhere - I suspect you (or autocorrect) made a typo and wanted to say "mobile" rather than "mortal". Solar powered mobile factories following the terminator on the Moon have also been proposed, especially near the poles and the cryogenic craters there. Those cryogenic lunar polar craters have trapped the volatiles from the temporary atmosphere created by, over Geological time, each impact by a comet or a volatile rich asteroids from beyond the en.wikipedia.org/wiki/Frost_line_(astrophysics). The Moon Miners would use telepresence and work with cryogenic robots to minimize the loss of water, CO2, ammonia, etc. - all very valuable. There would probably be towers with microwave links on the crater rims.

[@HowlingWolf518]

@@robertgraybeard3750 FYI, Mortal Engines is a series about dieselpunk cities on tank treads "eating" each other.

[@Jcewazhere]

@@robertgraybeard3750 Nah, "Mortal Engines" is the title of a book series. The titular mortal engines are cities that travel around consuming one another. There was also an okay movie made from it, check out the trailer. Or here's the blurb on it: "[Mortal Engines] is set in a post-apocalyptic world, ravaged by the "Sixty Minute War", a global conflict so violent it caused massive geological upheaval. To escape earthquakes, volcanic eruptions, and other natural threats, a Nomad leader called Nikola Quercus (known throughout the Quartet as Nicholas Quirke, and revered as a deity) installed huge engines and wheels on London, and enabled it to dismantle (or eat) other cities for resources." But yeah, neat concept with some flaws.

[@robertgraybeard3750]

@@Jcewazhere - ah, I stand corrected. After rereading your original comment I see that I missed your book mention. I have to admit I'm barely in the 21st century. There are so many games and books and TV shows of which i have no knowledge, whatsoever. And all the various social media? I quit using Facebook quite some time ago and primarily just bounce around KZbin.

[@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.

[@GabrielHellborne]

In these times of war and troubles, I listen to Isaac for a breath of optimism and the hope of a brighter future.

[@innocentbystander3317]

It is nice to ponder some of the challenges non-human intelligences may have to face someday. Let's be realistic, our species will simply not make it there, as we have some twisted sense of morality that dictates the species be held back by our weakest links instead of leaving such dead-weight behind. Necessity is the primary motivator for us, and when all incentives to pursue challenges is systematically removed, stagnation and degradation is inevitable.

[@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.

[@calvingreene90]

Caustic soda gets real hot when you add water and can be recharged by cooking the water out. Before the invention of electric locomotion caustic soda was one of three types of rechargable smokeless locamotives used commercially.

[@samt6885]

Greatly appreciated, Arthur. I love getting my science and sci-fi content unadulterated by ads with only relevant sponsors. Keep on making the great content, I'll keep watching.

[@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.

[@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.

[@yournan5372]

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

[@richardgreen7225]

- Someone did a design study for fission-powered railroad locomotives. Turns out a standard gauge railroad is not quite wide enough to accomodate the reactor with sufficient shielding. The obvious brute-force solution is to go to a wide-enough gauge. Of course, if you can build a railroad, you could simply use overhead lines with nuclear power plants providing the electricity. - For "off-road" transport, I suppose something between a main-battle-tank and the fictional "Bolo" tanks (about the size of a battleship) ... could provide mobile power plants.

[@malcolmhardwick4258]

The only thing Brilliant is this channel !

[@ponyote]

Flight is a lovely thing.

[@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.

[@OneCut1Slash]

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

[@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.

[@PhilipMurphy8Extra]

Issac is the science of KZbin that is for sure.

[@cannonfodder4376]

A most informative video for this Arthursday. As always I love how real and detailed your imagination is for these things.

[@fluffysheap]

This is a good episode! I think there could be a part 2 because it seems like there's a lot more to say about the outer planets, moons, Trojan asteroids, etc

[@Puddin-Tamir]

I'm gonna do a manga series where Issac has a space ship

[@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!

[@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.

[@VincentDangerWater]

Bring back hour-long Arthur.

[@petersmythe6462]

Radioisotope generators also have crap efficiency. If you used a turbine engine to convert the heat they generate, you could get at least 10x the non-thermal power output. And cycle thermal goo in and out for power storage.

[@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

[@boredgrass]

What an evocative and poignant vision: Living as an eternal wanderer on another planet, like our remote ancestors!

[@lghtosumun]

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

[@lenwhatever4187]

Before worrying about traveling around worlds... there has to be somewhere to travel to. I expect a Moon (or Mars) city will be a walk around place (like Frobisher bay where there are roads but the vehicles can be counted on one or two hands). Public transport will be the rule for a long time. Splitting a city into two cities with half the population each would cost pretty much twice as much. Everything depends on public infrastructure just to breath or eat or live. The idea of a homestead or private living space is really a non-starter. There would be either government run habitats or personal fifes of very rich people where everyone living there is a peon except the owner and family (and from history the family would not have much say either).

[@ulfnitijsefni30]

Honey wake up, new outwards bound dropped

[@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.

[@DFX2KX]

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

[@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.

[@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

[@mikelfunderburk5912]

Happy Arthursday! Thanks to all involved!

[@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

[@Cmdtheartist]

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

[@TheScienceTube]

Me too

[@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.

[@justincoombs9048]

Thermal storage would be amazing on Mercury. Dens rocker to use as thermal mass. Incredible gradient between day and night. Use this with closed loop turbine system for power. Use a large area of the surface as your radiator to space at night. The turbine can run both when filling and emptying the revoir of heat. We already store heat long term from summer for winter on earth, this would so much easier on Mercury.

[@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).

[@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.

[@jeffgraham9208]

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

[@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.

[@OldGamerNoob]

I've previously imagined using boiling water as a jet engine for a submarine. While possibly too energy intensive to work, I wonder if that's still the case in a liquid methane ocean on titan where electronics and living quarters would be at much higher temperature than the surroundings.

[@RobinTheBot]

It would not work with water on earth, you're right that is far too inefficient. It might work as a supplement to a methane ocean craft, that's quite a cool idea (pun intended)... But I would wonder if the trade off is worth it if you need to regenerate that heat already.

[@fearfulgrot]

In a methane ocean you could use oxygen to make a kind of jet engine

[@MrTaxiRob]

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

[@therocinante3443]

For some sad reason, KZbin hasn't been recommending your videos so I haven't seen one in a while. I searched you out and glad I did!

[@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.

[@sarcasmo57]

Roads? Where we're going we won't need roads.

[@imonbanerjee2997]

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

[@timogul]

Everyone knows you travel between O'Neil Cylinders using 60ft tall robots.

[@kalef1234]

10:36 that sounds amazing.

[@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

[@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

[@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.

[@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

[@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.

[@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.

[@airborneranger-ret]

Sailing is similar - the trip is the fun

[@rogerpartner1622]

I love these series of thought experiences with good old Issac. But I’m still tickled. Made to giggle over certain versions of his Speech Impediment. Lol. MORKURERY instead of Mercury.. well funny. Anyways the reason I’ve been subscribed for years !! Is because it’s soo bloody intresting! The sort of questions I’d ask. He answers . Amazing

[@tabd3277]

The novel ideas and concepts discussed on this show are amazing!

[@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

[@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!

[@Cartoonicus]

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

[@digitalnomad9985]

Books written before 1965 thought it was.

[@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.

[@evensgrey]

Ships and subs on Titan would have the interesting feature of carrying huge quantities of oxygen with them and just pumping in the mixture of methane and ethane from the surroundings as needed for fuel.

[@OpreanMircea]

I love the new animations, they are awesome

[@rhuiah]

Great episode.

[@InquisitorMatthewAshcraft]

Carl Sagan looking down from heaven at Issac and smiling 😃

[@petersmythe6462]

"There is still some sulfuric acid up there." Has anyone actually looked at how quickly it would damage skin and mucus membranes? If I wear regular clothing aside from a respirator and sealed lab goggles, how bad is it really gonna be?

[@styxdragoncharon4003]

Here are some personal anecdotes: I have gotten sulphuric acid on my skin before and it was not pleasant... I'm not aware of the concentration because I was making it with sulphur I collected from the volcano I used to live near... and I was like 12. It was not pleasant just very itchy to the point of burning and it left me with a bit of a scar on one of my fingers (I have to point it out for it to even be noticed). I only got it on me because I was following zero safety protocols... wear your safety equipment kids. The acid was in contact with my skin for a couple of minutes before I stopped the experiment and went off to find baking soda to neutralize it. We were out of baking soda so I asked the neighbors... it couldn't have been on me for more than ten minutes total. As far as sulphuric acid in the atmosphere: While at work, I got stuck in volcanic smog that's been nasty enough to make my skin feel like a bad sunburn after a couple of hours' exposure (I was directing traffic on a road about a kilometer away from a caldera). The clothes not made of denim that I was wearing looked moth-eaten after they came out in the wash. And of course, I had no gas mask or goggles so it gave me a smoker's cough and irritated eyes for a week. I'm still mad that I needed to buy a new uniform and got no hazard pay for that. TLDR: Meh... not a good idea.

[@David-bh7hs]

You could survive maybe a couple of minutes if you immeditely went into a lab shower after

[@talonvoidgeist2386]

Thanks, Homestar Runner! Very informative.

[@atlanciaza]

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

[@sab1751]

That was a cool episode, watched it on Nebula yesterday.

[@AlexPoucherGaming]

Great way to start the morning

[@stormhawk31]

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

[@Peoples_Republic_of_Cotati]

@15:30 this is the first time I have heard the claim that Microwave Power can bypass Martian dust storms...how do we know this?

[@atk05003]

I don't know if the claim is accurate, but I'm sure people who study the weather on Mars would know. The trick is to find a frequency that isn't absorbed or reflected by the dust storms. I think it's likely that at least one frequency in the Microwave range would work. (From 300 MHz to 1000 GHz, or as narrow as 1 GHz to 100 GHz, depending on the specific definition.) After all, cell phones and WiFi are both in the microwave range and they manage to transmit through walls at very low power levels.

[@johnharvey5412]

Hopefully, the people on Mars have a bit more common sense than the locals around here, who won't even allow 5G in my town. 😒

[@MarsStarcruiser]

@@johnharvey5412 20x the bandwidth at less than 1/50th the range… thats quite a huge tradeoff so I can understand why stable 4G connections farther out could be vastly superior than faster intermittent connection that keeps breaking up all the time.

[@drakedarkest1627]

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

[@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?

[@MrBishop077]

@21:07 Kind of redefines the term "Star" Cruiser 🤣

[@nil981]

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

[@virutech32]

If it was possible, cheap, & people trusted it

[@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)

[@robertvaughn9448]

Kyle Reese : All right. You stay down by day, but at night, you can move around.

[@gummigumm6973]

Got my snacks and a drink. Cool subject.

[@truthseeker3236]

Keep it coming thank you

[@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.

[@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.

[@scottthomas6202]

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

[@freddyjosereginomontalvo4667]

As always say : Awesome channel with awesome content and great quality 🌍💯❤️

[@N.M.E.]

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

[@jarrod752]

You have an inaccuracy you need to address: The sun does not hate vampires. Vampires hate the sun. I expect you to release a correction.

[@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!"

[@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.

[@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.

[@J0ermungand]

You should look into NASAs Kilopower (which is a radio isotope sterling generator - so using a sterling engine rather than thermoelectric elements to convert heat to electrical energy). They're supposedly more efficient than RTGs and can run on cheaper/more abundant U235 fuel.

[@emerett2409]

I love you Isaac.

[@Justsomeoneyoucouldhaveknown]

I don't think you can top settings sail on a river between 2 celestial bodies. That story still get me, and I go back and re-watch that episode ALOT. Both incredibly inspiring to know that that's a potential future for humanity. Depressing as hell to know that I won't live to get to see that.. Still gald someone "showed" me that it's scientifically possible to do so.

[@MrMarq22]

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

[@grambo4436]

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