You donˋt want only green light coming into a farming station - quite the opposite. Chlorophyll uses red and blue light for its synthesis processes, and green is reflected away (which is why it looks green, after all). That is why vertical farms use these pink-ish LEDs for lighting. Let only green light in, and you kill your farm - and fast.

@jsbrads1

4 ай бұрын

But you can’t argue, before the plants die… they would the greenest plants on that side of the fence.

@dominic.h.3363

4 ай бұрын

You need ALL of the light. Hate to break it to you but red and blue is not the be all and end all of everything, several wavelengths outside of that are proven to contribute to healthier plant growth. In order of relevance/significance/importance in regards of a controlled environment: Green Light (around 550nm): Influencing plant structure ("legginess"). Plays a role in regulating plant defense mechanisms. Far-Red Light (around 730nm): Affects the plant's response to photoperiod and promotes flowering. Ultraviolet (UV) Light (around 280-400nm): Triggers defense mechanisms against pests and diseases. Can influence secondary metabolite production. Infrared (IR) Light (above 700nm): Contributes to heat and energy transfer processes. Can also influence flowering time and plant development.

@beskamir5977

4 ай бұрын

I suspect that was misspoken and he meant the opposite. Except, plant's don't just use certain wavelengths. Sure photosynthesis is most sensitive to red and blue light, but some proteins can't be properly assembled without UV light, IR light helps a plant know if it should flower, etc. To suggest that any wavelength is useless for plants because most of it is reflected and it's not directly useful for photosynthesis is sort of like claiming that most of our genome is useless because only a very small percent of it actually codes for proteins. Just because we currently have no clue as to how something could be useful does not mean that it cannot be useful, and I think there's enough evidence to conclude that the sun's entire spectrum, as seen on earth, is necessary for plants to be at their best health. Or at least enough of it is necessary that it would just be easier/cheaper to replicate the sun's entire spectrum than picking out individual wavelengths.

@EdT.-xt6yv

4 ай бұрын

​​@@beskamir5977 the junk DNA as a relic of all points mutation or ,,,

@digitalnomad9985

4 ай бұрын

@@beskamir5977 Many plants are hydroponically grown under red and blue LEDs with success.

one thing i really wish is to live long enough to see all this and almost all of your other stuff in reality... from Mushroom Habs on Mercury over to the Chandelier Cities of Neptune to the Acheron River Between Pluto and Charon, then to board the Unity for a Galactic Roundtrip... thank you for bringing so much Fantasy you bring to our lives...

@julesmoore8248

4 ай бұрын

I have to visit an O’Neil cylinder before the day I die I just have to!! And not on oculus lol

@SirHeinzbond

4 ай бұрын

@@julesmoore8248would be my favourite way of moving around in System, living on an O’Neill Cylinder on the Scenic Round from Mercury to Neptune...

@maltheopia

4 ай бұрын

Depending on how you think AI and specifically LLMs will shake out, there's a very good chance you will live to see all of these things. Just saying.

@Hysteresis11

4 ай бұрын

I think we're 1000 years too early for that kind of life extension.

@Seth-Halo

4 ай бұрын

​@@Hysteresis11Issac doesn't and I hope he's right but we will just have to wait and see.

The JumpShips in the BattleTech universe are statites, hanging out near the jump points over stellar poles to recharge their jump drive batteries.

Much like sail makers of old, I'd imagine that solar sails would include rib work of double or triple layers for stability. It would also mitigate tearing.

@alexv3357

4 ай бұрын

By that point self-repairing materials may well be on the cards too

@AnimeShinigami13

4 ай бұрын

probably with their own special "household" tools in every toolbox ready for use! I have a "sail needle" in my sewing supplies for tough materials a small needle can't get through.

Hey Isaac, I've been watching you for years now and just want to say thanks for all your work, it's not an exaggeration to say you've literally changed the way I see the world. Also, I finally decided to get a Nebula subscription just to watch your exclusive stuff there. Much love from Greece.

There are surely some genius folks out there who 3d model and visual effect with the best who could link up with unc Arthur and create some crazy interesting short film.

The episode is fantastic, I’ve never even considered this concept before, but… that music. I’m not sure if it’s new, but it’s incredible. Fits so well with the style of the video and your voice over! I hope we get more like it!

Early Morning Gang! Coffee!!!! POWERR!!!!!

You make space exploration seem so cool dude.

Watching this video is a great way to spend a Sunday evening.... or whatever time it's convenient for you ...

Starting the day off right, thank you Isaac!

Oh so they are called statites.. I remember being so proud of coming up with that idea as a thought experiment. And then I found out it was thought of long ago after finding this channel.

Great work as always! looking forward to the next video!

The video might be talking about two different satellites...oh three. Thank you for uploading an interesting video. Replaying!

You make my day everytime you post a video. Thank you 🙏🏽

Awesome work as always sir.

Such a pleasure to have you making contact like this! Wonderful

Another good Sci-Fi Sunday episode Isaac.

Super glad you made this video, i was always pretty ok with what each of these dud but to get such a solid breakdown is very cool! I love the idea of statites, lagites and all the rest for true movement towards K2 (even if its a small step) much like Isaac always says, life extention is the tech i mist want to see, so i can live to see a day we have a good solid space based infrastructure! Thank you very much for this Isaac, it was very interesting!

Fascinating. Thank you.

Oh... Getting better and better day by day on this channel.

Best way to end the day, new Isaac!

I've been watching these (amazing) videos since nearly the beginning of the channel. Your "speech impediment" was never a problem, but I just noticed how much it's changed; it's not impeding you at all :D I hope you don't mind me commenting on it, I'm not trying to make anyone self-conscious- just if you're making efforts towards it, I wanted to acknowledge it

Great episode!

After the video, Issac comes in with his smooth Barry White voice, “So today…”

You could probably create any shape orbit you want with unpowered lagites. E.g. have a ball lagite that is optimized to rotate once every half an orbit and the other half of the ball sees the sun, it reverses the orbit. So it makes half a normal orbit, then reverses direction, makes half an orbit, reverses again and so on. Just by carefully picking the shape of the lagite and the angle of the reflectors on its surface. Kind of like how you can make objects that roll along any shape line of the paper "Solid-body trajectoids shaped to roll along desired pathways"

@abrahamroloff8671

4 ай бұрын

That's actually an interesting idea. We could make objects move through space the exact way that people tried to reconcile the movements of the planets before Newton, performing occasional retrograde loops. Don't know if that'd be useful for anything, besides a cute poke at the history of physics. 😅

@abrahamroloff8671

4 ай бұрын

Now you got me thinking... What would an occasional odd timed looping be good for? Dodging known navigation hazards is a good one. Say you have an intense power beam, or known regional traffic flow, but need a system that crosses that stream sometimes. Your idea could automate that, just based on the morphology of the object and no need for any interjection by those operating the thing. Nice.

@Embassy_of_Jupiter

4 ай бұрын

@@abrahamroloff8671 you could use them to mess with apes on a stationary disk, making them think not everything revolves around them, when it actually does jokes aside maybe you would use them to build shortest path cyclers between statite stations. Let's say you have 8 statite stations floating over a tiny patch of the sun arranged on a figure 8, so you have two of these arbitrary path lagites (wobblites) tracing out a figure 8 in opposite directions to travel between these stations. Like an ""unpowered"" Dyson swarm metro. Seems like a good idea for fault tolerance through passive safety, no reactors to upkeep and so on.

Great video...👍

Basically, this episode is about special cases of active support structures.

Stay away from gravity wells! 👍

@TheWebstaff

4 ай бұрын

Unless your name is Dyson.

15:55 You mean block green light, leaves appear green because green light is reflected away from the surface because green light is not ideal for photosynthesis.

Speaking of Cool Worlds that channel SFIA, SEA & John Michael Godier are the absolute best channels for this kind of content.

Being used to Arthursdays, every sunday episode feels like a gift ❤ (If I'm correct, i think i heard that in 2024 Sunday shows will be almost regular ❤❤)

I could definitely envision a sail that turns based on either magnetic information or when hit with differences in radiation or heat from the star. Using that as a kind of water clock when it is time to turn away from the star and reflecting it's energy back at itself. Like window blinds on a star. This could happen without fuel expenditure just based on the materials of the sail and planning on where it is placed and understanding the weather of the star. This could even be used to control the flow of light to a solar collector or panel behind it to keep it getting a consistent and predictable flow of radiation.

A farming station would want to reflect green light away, not let it in. Plants are green because they don't absorb green light very effectively, but do absorb the more abundant light in the redder end of the visible spectrum and the more energetic light in the bluer end.

Ouh... Get better soon? That Ad-read sounded a bit sore (though, also awesome :P)

4:45 Having a means of variating the ratio will be important when other variations crop up.

hmmm turning the sun into an ion drive.... wow i like it, the scope is amazing.

Today I'm listening to SFIA while repairing the blackout window covers on my camper van

And what of magnites , satellites that use the magnetic fields of its host celestial body to keep a stable orbit?

16:20 I wondered what would you call a migrating satellite/facility that moves between lagrange points. To what purpose would it be of use? Solar pushing other satellites?

Would you ever consider doing an episode on some of the concepts from the Manga and Anime Dr Stone?

I'm a little confused about how these would collect and transmit power. It might be a geeky detail sort of thing but it would absolutely change the math by adding a large laser and changing the reflectivity with solar panels.

Your an absolute Legend my man. Another collab with JMG on the cards anytime soon.. 😉

Yes

Imagine:an enormous pair of transitions perscription photochromatic lenses...😮

I found a mistake! *FINALLY!* Been a channel regular basically forever, and I finally found an oopsy! 15:56 A greenhouse that only lets in green light and reflects all other wavelengths away? 😂❤😂❤

As a community we should be able to come up with a good for the name for the siege weapon that maintains it's relative position via recoil. I was thinking statite jackhammer due to the bounce motion and the effect on whatever is below it, but i feel like there's a better name out there since jackhammering normally requires the tool to be touching the work surface directly.

@abrahamroloff8671

4 ай бұрын

I vote we call it a "Station Keeping Armament", or S.K.A. That station's gonna dance! lol

At 15:58, you mention a farming station that let's green light in and reflects other light away. That's is not how plants work. Photosynthesis needs green light the least, instead being most efficient in red and blue wavelengths. This is why LED grow lights appear purple.

A note at 16:00. You mention farming space stations that let green light in and reflect other colors, but this is not actually a good idea. Green light is not used in photosynthesis; that's why it's reflected from the leaves of plants. Your farming station, if the idea is to collect light for photosynthesis by Earth plants, would probably do better collecting red and orange light.

Could statites orbiting a red dwarf be more practical if you had three or more redirecting sunlight at each other? Also, I think you're going to want to let wavelengths other than green in; plants do make use of green even though that seems to be what they reflect most, but the red and blue areas are significant as well.

@robertbyerlay5040

4 ай бұрын

A house of cards tiered to reflect enough light to expand beyond a proper statite layer of a sun. Light reflected from a satellite to push other satelites closer to the sun but countered by higher reflectivity than warranted for its position.

@jsbrads1

4 ай бұрын

The closer they are to opposite sides the more beneficial the bouncing of light helps. So you would have one mirror split it’s light to two mirrors on the right and left side of the sun (neglecting any Stelasering effects) you get 1 solar push from the sun, 1 solar push reflecting the light back (neglect any small loss to a very small angle change) and you get two half mirrors reflected at you so that is 1 more solar push and you reflect that light back into the sun, so that sounds like a total of 4. And it would require a structure to hold the two halves of the mirror at slight angles.

@Pystro

4 ай бұрын

@@jsbrads1 To me it would seem like hitting the statite on the opposite side of the sun is the big problem. They would be unimaginably tiny specks. And the foil that these things are made out of really doesn't seem like it's very suitable for holding a perfect parabolic shape. The easiest way around it would probably be to have statite clusters, and just focus your light on a whole cluster. For example in an arrangement with 9 clusters, "first" light reflected from cluster 5 would be aimed at clusters 1 and 9. The statites in the center of the cluster get a stronger push out of that "second light", but that should be solvable by having them swirl around inside the cluster; or just make the statites that go into the center heavier for their area.

@jsbrads1

4 ай бұрын

@@Pystro with todays tech, you wouldn’t get any light on the other side.

23:30 Who pitched your voice? Or is it more than pitch? It feels off

Hope you include Tin Man from the next gen episode of the same name.

Happy Sunday everyone. Let's find out what statites are lagites are

Could a cylindrical orbits around planets with magnetic field like earth be possible not by using light and/or solar wind pressure but magnetic force?

2:54 That's always the trouble though isn't it.. 😅😂

How would we go about crushing an asteroid? I can see melting it by wrapping it up in tungsten foil and blasting it with concentrated solar energy like a giant space baked potato, using centrifugal acceleration to separate the molten slag out. But I have a hard time imagining any kind of mechanical crushing action in low gravity.

@garywalker8493

4 ай бұрын

Slice off chunks to toss into your crushing machine. But I suspect it was just a metaphore for breaking apart the asteroid into manageable pieces.

@wroughtiron7258

4 ай бұрын

...How? You can't just get a big flying space chainsaw. Any kind of mechanical crushing of asteroids is going to be very difficult until you've got either artificial gravity or K2-scale megaprojects in space that actually have strong gravity wells of their own or a way to simulate them.@@garywalker8493

Statutes, Lagites and Quasites, I didn't know anything about it. Sorry for my ignorance, but I'd rather admit it than pretend to know. I will read more about this. Really interesting. 👍👍

What about coronal mass ejections (CMEs)? You mention solar wind, but wouldn't the pressure exerted by 1000+ km/s plasma from a CME dwarf the photonic pressure? I suppose a Statite could un-deploy its sail, but still...it's hard to imagine a paper-thin and super light spacecraft designed to balance on photonic pressure withstanding random CME "gusts".

@Shin_Lona

4 ай бұрын

You're correct. The concept isn't really viable because it is reliant on there being an equilibrium between gravity and radiant force - a notion based on the assumption that these are constants... which isn't the case. Not only are there CMEs, as you have mentioned, but solar activity, in general, fluctuates greatly... often violently. While certain concepts in science fiction are merely limited by our current technological capability, there are others that have to contend with physics. If we take the accounts of the Carrington Event into consideration, I don't see how this or a Dyson sphere could withstand the EMP from a significant solar flare at that proximity - the electronics would be shot. A CME of that magnitude today would cripple civilization due to our reliance on computers... and that's with our magnetosphere acting as a planetary forcefield. The entire electrical grid would be fried along with anything plugged in and probably most electronics that weren't directly connected. I've seen estimates of taking a decade to completely repair the electric infrastructure and that's not factoring in the chaos of the accompanying societal collapse. The terrifying reality is that it isn't a matter of if this will occur, but rather when. It's an inevitability. In my opinion, working on a contingency for this impending crisis is a much more productive endeavor than speculating on exotic future technologies. Also, there appears to be a correlation between solar flares and seismic activity. Very interesting phenomenon and worth looking into. "Cheers" doesn't really seem like an appropriate parting after a proper doom-mongering session, so I'll leave you with a "Take Care" instead. 😆

How about a sailing ship with a keel, sails, and rudder that is "sailing" on the magnetic field forces?

Asimov's "I, Robot" had a story about something like this. Guess I'm going to read it again.

Is it possible that black holes convert mass into dark energy increasing the total space-time, and that the expansion of the universe is proportional to the number of active black holes, accelerating during times of higher black hole gestation? I would love it if you could poke any potential holes in that theory?

If you a fan of the show and a artist that wants to contribute some art for some upcoming episode. where should you go to get in contact/Submit that?

Do the sun have enough variens in solar output to distrupt these? And could we "tame" the sun so it behaves?

I think the rolling up is too complicated for a supper thin solar reflector. Small, micro or nano sized mirrors on a larger thin disk, which can move and change orientation like modern projectors do, is a far simpler and more reliable option. The capacity to change the direction of the light through reflection means collecting light becomes easier, just balance the gravity with the push+orbit and the rest is reflected to outward orbiting collectors. It is a bit difficult to explain in a KZread comment, but I think the nano-mirrors would have a higher value in the long run. Get a king of effect with lighthouse lenses.

@Fyrefrye

4 ай бұрын

I suggest you look up the work of the engineer and origami expert Robert J Lang. He has spent his career working on computational origami and has worked with Nasa on a similar question: How do you FOLD a large flat sheet, such as a solar panel or mirror array, into a tube such that it will consistently and reliably unfold? For example, he helped them develop the folding and unfolding methods used for the James Webb telescope. So while it might be wrong to call what's happening with these satellites "rolling", it is possible to engineer an incredibly thin film (or "grid" of film segments) that will consistently "fold" with minimal directional inputs or motors.

Living for SFIA at the moment

One small correction. Close to the sun the light intensity will be approximately constant with distance. It will start to diminish at around a radius away from the surface and only be a function of inverse square of distance when far enough away to approximate the sun as a point source. I’d have to work out how close but i suspect by earth orbit or earlier it’s close enough to inverse square for a lot of purposes

@jsbrads1

4 ай бұрын

Very cool… uh hot. Don’t know if you are referring to inside the burn up distance, or even outside of the safe to survive material. Thanks

@robertbyerlay5040

4 ай бұрын

Please Ball Park some examples? Earth's sun on a 10 km diameter with a weight of X would it be beyond Mercury's orbit?

@jsbrads1

4 ай бұрын

@@robertbyerlay5040 the sun is half of a degree from earth, but from the surface of the sun it is 180 degrees. Very rough numbers, at around one diameter from the core it is about 60 degrees, 2D 30, 3D 20, 5D 12… but you have to remember at 180 degrees, it was half of the sky. At 90 degrees it is 1/8, 45 1/32, 22.5 1/128, 11 1/500,

Call them Recloids Recoil+Asteroids.Since their recoil is their means of maintaining orbit

"polesitter" Lmao

❤❤

The amount of control logic to keep semirigid structures from destroying themselves when spread across 5 gravity wells is gargantuan. Best to keep structures floppy and far apart.

I have a question, is it possible to build a Dyson Sphere as depicted in you video and without destroying the Earth?

@abrahamroloff8671

4 ай бұрын

What dangers concern you? I bet there's good answers to most, if not all.

I don't think we have a video about the giant space monsters

If the statites reflect light back at their K star...does the process also result in the star's lifetime becoming shorter as it becomes brighter and hotter? thank you.

@venomousspecifics45

4 ай бұрын

Good question. No, the lifetime of a star is determined by how much hydrogen can be fused into helium near the core of the star. (I’m skipping the details at the end of the star’s lifetime.) The solar sail will reflect light. However, the amount of light it reflects is a tiny fraction of the overall light emitted by the star. So the star’s atmosphere will not be changed by the small amount of returning light.

@AlexandruSD

4 ай бұрын

It will actually cool the star. I know it's not intuitive, but science often isn't. A star is in almost perfect hydrostatic equilibrium between the fusion energy that tries to blow it apart and the gravity that tries to crush it. It is also losing energy (as light from the surface), the same energy that keeps it from collapsing. Reflecting the energy back to the star means that it now needs to produce less fusion energy, since the radiation losses are smaller, while the mass stays the same. You can observe the same effect with the amount of metals (every element besides hydrogen and helium) in the atmosphere of a star. A lower metallicity makes the star more transparent to radiation, so to speak, so they burn hotter and live shorter lives.

@keenirr5332

4 ай бұрын

thank you for answering. @@AlexandruSD

@keenirr5332

4 ай бұрын

thank you for your answer.@@venomousspecifics45

4:37 - I thought it was 1.5 grams per square meter for the Sun.

If we beam down massive amount of energy how would that affect the climate?

@garywalker8493

4 ай бұрын

To raise Earth's temperature by 1.5 C via beamed power, it would have to be about 210,000 megawatts. For comparison, total earth electric generation is about 3000 megawatts

We make an artificial Lagrange point, we are catching up with you still in through to that point, then we quit the O’Neill cylinder, with a magnetic strip, and several fusion reactors, and we can either collect straight. How do you know, helium, cause an artificial solar flare, and then collect helium, and put the hydrogen helium, do it, the fusion, reactors, making evidence to elements, out of the resources of the sun, I call it project star forge; I don’t know if anyone else has come up with this idea, undoubtably, somebody else has, but no one that I’ve talk to about this idea, has had thought of something similar, but most of the people I’ve talk to, I still don’t really understand what I’m talking about, when I talk about science and future concepts, it’s very lonely.

Are these ever really viable? I mean when you consider the laws of thermodynamics and the efficiency of transmiting that energy to wherever it needs to be used, it doesn't seem so. You could say those are science or engineering challenges. But Fusion reactors are that and are meant to one day be practically limitless, no?

@garywalker8493

4 ай бұрын

The total energy available from fusion not including the central star is small in comparison to putting a Dyson swarm around the star and capturing most if it's fusion energy. Mass of suns are likely 100000 times mass of terrestrial or 1000 times mass of Jovians. Oxygen is a relatively rare element in our sun, yet the mass of solar oxygen excess the mass of earth.

broer olipticrel right

I’m sure it’s not even worth your time financially to respond but is it better for you if I watch your videos on KZread or nebula if I don’t see one until it’s on both?

This makes me ask why we don't use clouds of statites or suchlike to solve our energy problems. I guess the absence of space-based industry makes it nonfeasible for now, so it's high time such industry was developed.

@kemmerer

4 ай бұрын

We will, one day.

'Aights.

As long as we spend a Trillion dollars a year on the DOD none of this will ever happen. Interesting as fiction though.

Wow... If a statite gets 10μΝ/m^2 from the Sun to Earth then it needs about 0.1 grams per square meter to be stable!! 0.2 if it also reflects the energy! Which sounds small but it's not absurd. Paints arleady get so light like plasmonic paint! Aerogel already is so light and is also glassy enough to hold its shape! And we can also put it closer to the Sun!! It's just a matter of time, not technology for all we know!

First.

Did anyone else click because I am smart enough to know that I have a monkey level of intelligence. So I needed to understand what the fu#k those words in the title meant.

🖖😎

Space geoengineering is the safest way to fix the accelerating global heating that will continue for centuries after net zero and cause global civilization mayhem, billions of people will be displaced or worse.

The oppression it would require to build, operate and maintain space-borne megastructures makes me wish for that golden era of human liberty called the stone age. Yeah, there were problems, butbthey were local and every person in the tribe had an essential role. Reincarnate me as a rock at the bottom of the ocean.

lol, imagine coming into a starsystem and finding that all the planets moving in weird geometric lagite 'orbits', through a combination of gravity and variable reflectivity as they turn in relation to the star. Like, the surfaces is partially coated in a reflective surface, so it gets enough off a boost to to move tangentially to a normal orbit, eventually loosing momentum, and then falling at 60 degrees to it's previous movement towards the star because of the combined forces on it, then again and again, to form a perfectly triangular orbit. Then another moves in a square orbit, another a 5-sided, and so on

10% exactly

I am a bit let down at this point after SFIA getting big but still has to wait a week before any new content drops in

It’s jj from x I’m still waiting to hear back from you Isaac.

@xXevilsmilesXx

4 ай бұрын

I always knew parasocial ppl existed, but it is weird seeing it in the wild 😮

@dingo4530

4 ай бұрын

Acknowledge me senpai

Like 685 😊

@Kirsten2933

4 ай бұрын

Whenever I'm in the first 1000, I like to leave a like n comment. It is to support and push the algorithm.. 😁 Isaac, thank you for your love! I love your work!

Sorry, I don’t buy the statite concept. Solar output varies, and thus this thing would have to constantly adjust.

@isaacarthurSFIA

4 ай бұрын

Why would that be a problem?

@kemmerer

4 ай бұрын

Solar flares and CMEs would be a problem, especially near certain red dwarfs. This constant adjustment would be a challenge, but I don't think it would be insurmountable except around very active stars.

Was that ai isaac i hear? 😂

15th

45th to comment.

This whole thing seems to be Japan vs US all again. And end is the same, but this time US technology will win, not industrial might. Can ypu remember a time when chinese have had an original invention, not just second-rate copy?

Is Mr. Arthur using AI-generated images for the thumbnails now? I think playing with that stuff is fun but I believe humans should be used for professional operations like this channel.

mercurius venus earth mars astroid built jupiter zaturn neptunis uranus luto kuipers