Yes, scientists are actually building an elevator to space - Fabio Pacucci
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- Опубликовано: 6 дек 2021
- Explore the physics behind space elevators, which would theoretically use a cable anchored to Earth and extending into space.
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Sending rockets into space requires sacrificing expensive equipment, burning massive amounts of fuel, and risking potential catastrophe. So in the space race of the 21st century, some engineers are abandoning rockets for something more exciting: elevators. What would it take to build such a structure? Fabio Pacucci explores the physics behind modern space elevators.
Lesson by Fabio Pacucci, directed by Tjoff Koong Studios.
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If they can create a whole elevator to space it better have some sick waiting music
there is a better alterantive. combining the rockets and the space elevator, we get the sky hook. its basically like a arm ctaching space shuttles and flinging them into orbit
to see a more detailed explanation, go watch Kurgezagt's vid on them
link:
ruclips.net/video/dqwpQarrDwk/видео.html
Just repeat this (ruclips.net/video/xy_NKN75Jhw/видео.html) 3657 times 😂😂
Suitably spacey elevator muzak.
ruclips.net/video/X1ESRMntsFo/видео.html
Haha probably like rocket elevator would be cool in terms off speed
Stairway to Heaven for 7 days
“The space elevator will be built about 50 years after everyone stops laughing”
- Arthur C. Clarke
Then destroyed by terrorists...
You're everywhere
@@Ninja_Cat777 I’m sure it would have pretty good protection
@@nadegaming3136 One would hope so, but then again, look at how vulnerable planes and spacecraft are to relatively minor defects and consider just how much of an impact there would be from just a little extra mass per unit of length most of the way. I'd be very concerned about what happens when you need to repair the tether. Even the relatively small cables used on an elevator would cut through anybody in the vicinity if they snapped without that concrete box surrounding the shaft, and this would be much, much higher and without a protective case.
@@SmallSpoonBrigade yeah, this is really complicated
This narrator has been doing this for like 10 years and he remains an absolute legend
He got a good gig! I'd love to have the same opportunity :)
His voice never gets old
@@Aviator27J after working for a large company for over 10 years I think it's more than a gig
right
Legends never die.
>Yes, scientists are actually building an elevator
No, they are not ACTUALLY building an elevator.
Good ol' youtube clickbait BS...
Seriously I was so annoyed, this is OLD news. I was excited to hear that they ACTUALLY started as the title claimed
Use common sense karry299
Yeah, but we are to blame too. We read that scientists are building... and didn't bat an eye.
@@benjfrog99 yup common sense.
I was always fascinated by the idea of a Space elevator, although if the whole ride that 8 days than I hope that the climber is more like a small space station rather than like an elevator cabinn
More like a small Winnebago.
🤣
@@frojojo5717 Sorry what is that? Like a RV?
If its a cabin i may just die from claustrophobia
@@mike5869 Rockets aren't any more roomy so Soace isn't for you I'm afraid
Like the book starclimber?
There also needs to be space escalators and space emergency fire exits to adhere to safety codes.
ermegency fire exit... that sounds like ejection in space
gives stairway to heaven a new meaning
Emergency fire escape - rickety steel stairs going down 36,000 km? XD
Don't you think it could bring you to space
Has to be manufactured with a safe space for anyone that needs to feel less threatened, too.
"For one thing, a construction accident could be catastrophic."
*Flashbacks to Foundation TV series' Star Bridge terrorist attack.*
Other alternatives to space elevators are either mass drivers, which are essentially half-cannons-half-landing pads for stuff to be shot to or catched from space. Or, space tethers, which would also require to be long and in space, but instead are rotating skyhooks that catch stuff to yeet it into space.
But how would that tether work? If that thing was in orbit, while spinning it would be extremely difficulft to grab objects and land them safely, wouldn‘t it?
I think we have to apply Murphy's Law to the space elevator idea. If it can fail, given enough time, it will. Foundation wasn't exactly a failure, but fall it still did.
@@Leo-zi1uf there's a kurzgesagt video on the idea, but basically you'd have to pretty much have specially designed aircrafts for such flights, but as long as you kept receiving and delivering stuff it would remain in orbit with little problem
@@matheusGMN Thanks!
Ah, you watched Kurzgesagt, didn't you? The 'yeet' gave you away.
No, there is no one building anything like a space elevator. Scientists are simply thinking about how one would go about building it. Huge difference!
Well said!
Which is, for every single serious project, how it begins.
Not every project is possible. Just because past projects began as an idea, does not mean discussing it makes it possible.
A tether 36,000 kilometers long? And a space elevator on the moon won't work the moon doesn't spin on its axis.
Not in the conventional sense.
How would you know what China and Japan are building lol. I work for a Japanese company and I can tell you they do NOT share secrets
Thank you
“I’ll take the stairs”
an elevator to space would be an introverts worst nightmare
considering “small talk” fear
and stuck with them for 8 days
well you need to take into consideration that since there isn't a space ship to be managed, there are high chances of a one person crew going. and that sounds like heaven.
In 8 whole consecutive days people can go way beyond "small talk" terms.
- "So which floor?"
- "Fly me to the moon"
I know "centrifugal force" is a common thing to say, but every time I hear it said, my old physics teacher's voice pops into my head saying, "There's no such thing! Just call it inertia, because that's what it is!"
I feel like those awkward elevator moments would be even worse
I love how Ted-Ed can teach us about, well, anything, in 5 minutes. This is one of the best channels ever. Thank you, Ted-Ed!
Considering the title itself is a click-bait lie, I don't share your optimism.
this is the best multi-contents channel on RUclips of all time.
What about the emergency exit leading to the stairs in case of a fire?
Nice question,
Answer - Doraemon Bamboo copter
I think you are screwed with emergency exit.
@@ABHAY-hu9kw Lmao
Am I the only one who immediately thought of "Charlie and the Great Glass Elevator" on seeing the video's title?
This would be cool. The idea of being able to just… go to space without being an astronaut. Like at all, is exciting.
I like how TED just glossed over the whole '8 days in an elevator' thing.
They glossed it so hard that I didn't notice until you mentioned it.
8 days ain't much though
How about 1 year in a spaceship to get to mars? 8 days is nothing..
In an elevator… little people have been stuck in an elevator for beyond a week…
@@fantasyshadows3207 I think the problem is that you're thinking it'll be just like a normal elevator, there will be food and water there, a place to sleep and all other kind of stuff humans need
When you're on the carousel and you let the string go, the rock with the string will fly away. Now imagine you're in the space elevator and the cable snaps.
While the other half slaps back and destroys a path around the globe. Weeee!
@@WelcometoVideoCity imagine this massively thick cable insanely long snapping back to earth like a whip, its unlikely it wont atomize at least a bunch of ancient structures like colosseum etc
Ever read Charlie and the Great Glass Elevator? I know it is purely a child's fiction, but I quite loved the idea when I was young
@@SToXC_. That's a very strange example to bring up. The surface area of the colosseum is miniscule, as are all ancient structures when compared to the vast amounts of space on earth taken up by water and wilderness. It's absolutely possible that it could come down in a populated area but that would already be pretty unlucky. Most if not all of it would probably end up in the ocean.
The elevator won’t have enough force for the station to reach escape velocity but it still would probably doom anyone on the station and on the elevator.
if something like this actually happens, then now we just need a space hotel
It could also act as the counterweight
And you know businesses will fight over who gets to build the first one! And charge (fleece?) rich people until they make more accommodations.. or until the rich get to go to wherever else they can -- just so the can say they were there...
I hope you have read Roald Dahl,... if you have then you have made my day
@@vyomrane1237 who me or Zookiekookie?
@@loreleiwebster9347 Zookiekookie, but if you have, then that is great as well.
The space elevator was a big point in the Gundam OO anime.
The elevator in there acted like vertical trains.
Every time I see a video about space elevators, I always hope to see a Gundam 00 reference.
Yet it is said that the elevators are very fragile, not sure of it can handle getting hit by debris
@@ferrytannoto72 then they should avoid or prevent it with prediction using the moving platform but yeah I haven't watch the anime so I don't know how is the lift actually works there
@@Vejitatheouji or an ace combat 7 one
@@ferrytannoto72 not to spoil. But I. 00, that does indeed happen
But 00 also features three tethers, that join at a ring of solar rings. Meant to harvest power
I'm sceptical about the safety. The ISS carries a multi-layered armour to protect against debris, how would the cable be protected? For reference, the geostationary counterweight would be at almost 100x the altitude of the ISS. How often would it have to dodge things, and can we even track the smallest pieces that could cause damage?
And if a climber is supposed to be 95% cheaper than a rocket launch but has to travel along a cable under its own propulsion for 5 days, it seems that a lot could go wrong.
The video also skipped about the gigantic problem of how to connect such a gargantuan cable in the first place. A quick wikipedia crosscheck gives some interesting plans (a slim 20 ton base cable which supports small construction climbers that would then expand the cable to over 700 tons, hopefully supporting 20 ton climbers at the end), but one has to wonder how many risks such plans contain. A 20 ton cable with a weight of only slightly above 1 gram per meter would certainly be vulnerable to a great many things.
As the anime series Gundam 00 pointed out, it's impossible for any such plan to come to fruition even if we have the means to manufacture the material needed right now. International geopolitics in its current state forbids it.
Yeah, these type of things really need to sacrifice lives before it gets perfected. No built megastructure made first time across history didn't cost lives. 🙂
Yes, and whenever you start making the tether spin, you could wind up with the tether noping out and wrapping itself around Earth, which would mean a lot of cleanup and a lot of lives lost. This is the thing that would cause the most casualties.
Yeah, this idea is crazy dangerous!
Also, what if an asteroid hits the pole? Will it cause the pole debris to crash into Earth’s orbit?
It is possible that It can be built but it's practically impossible, taken in mind the workforce needed, future damage, sabotage, space debris and when we include geopolitics , ola uber incident bound to happen if you get my gist. But hope is always there.
If you wanna see what happens when elevator falls try watching first episode of The foundation tv series.
biggest issue is the usury, its not like you can repair this cable, you'll need to replace it every now and then, or it may need multiple cables linked to the same structure for more safety, but still, looks too much sci fi for now, there s no way we can manufacture Giga tons of the highest quality possible nanotubes or smt to build this cable, assuming its strength is actually as sci fi as they say, because all they have is tiny amounts of it, the strenght never scales up linearly with the size of it, 1 layer of nanotube may look like a magic material, but a 10000 layers one isn't nowhere near 10k times stronger
@@SToXC_. We did go from steam engines to rocket science in 50 years span too though. So it's not too farfetched.
@@SToXC_. but isnt that type of talk the same for every futuristic project? No one could ever imagine going to space before, now look at that. We can't imagine the stuff we will discovery along the way. So much things can happen, that maybe we don't even need to use actual cable, but something much more sci-fi like, magnetism or gravity manipulation.
The thought of an Elevator on a relatively thin line into space makes me more anxious than sitting in a spaceship.
There's probably no reason why the "cabin" couldn't carray enough safety systems in order to detach and land safely back on Earth during an emergency, perhaps with heat shields and parachutes. Does that make it seem more safe?
its more like a train line but the direction is up
@@xXxSkyViperxXx That is literally just a possible description of an elevator XD
@@Mediados elevator is usually small tho, but this one could be really big and long like a train. it'll soon be like commuting to space
if it falls in a catastrophe, it will probably wrap around the entire planet lol
It would. The Earth is only 40,000 km in circumference. if it were actually anchored to a mobile base as was suggested here, the drag of a 36,000 km cable succumbing to the spin of the Earth would easily cause it to wrap around.
Someone better not put any other buttons on that elevator besides up and down. I'm just imaging the elevator scene from Elf 😅
?
As usual, this video never mentions "conservation of momentum". The Lift-Car at the equator would be travelling at 1670km/h towards the east. The cable would also be travelling at this speed at the ground but would be travelling at 11000km/h at the geosynchronous orbit altitude of 42164km from the earth's centre. This means that, as it climbs, the Lift-Car would pull the cable back more and more, pulling in the counterweight, which would adopt an ever-changing eliptical orbit until it crashes.
that would entirely depend on the weight of the lift and the counterweight though? if the tether is kept taught enough by the counterweight it wouldnt be pulled back
That's not how it works, Norman.
Conservation of momentum applies to the entire cable and counterweight system. It's cute when flerfs gets confused by the variety of 4-digit numbers. The linear velocity will always differ at various heights along the cable, but the rational velocity remains the same. It's 15 degrees per hour.
When you’re scared of flying in a rocket and you’re also scared of an elevator free fall..
Fortunately no-one is forcing you to go.
Yet.
Ngl, a construction disaster involving the space elevator is scarier than any of the known construction disasters. Imagine seeing a line of meteor showers in the sky.
Hmm… All we need are just a couple of magic beans! Love the story :)
I have some. Send me your credit card info and I'll get them right out to ya!
Finally, now we can build spaceships on the moon and not have to worry about leaving the atmosphere
a skyhook would make a lot more sense than an space elevater on earth.
It's easier to build down than up and you won't need to be that high. You just need something that can stay in orbit and stay at the same place as where you're planning to hook up or great timing.
10 hour versions of elevator music now suddenly seem relatable
I imagine that around a space elevator a whole industry would form: hotels, solar power stations, laboratories, 0G manufacturing, space ports, refueling stations, hydroponic farms, oxygen producing bacteria tanks or artificial photosynthesis... Eventually a whole city with thousands of inhabitants and all the related infrastructure would no doubt surround it. It would become crucial for anyone who intended to go to Mars, or the Moon, or Venus, or Jupyter... In fact, it might be a humble beginning to the world's first space ring. It would be the departure point for reusable rockets to refuel and refit, might even in time allow for rockets built in orbit that do not need to be adapted to the atmosphere and can instead be fully designed to efficiently capture and mine asteroids. Gold, platinium, titanium, niobium, all the wonders of space... Helium 3 for "easy" fusion... Not to mention colonization and such.
That is easy to imagine.
The ability to build such an innovation is not quite within our ability, yet.
But, Maybe soon.
Somebody needs to make a video about what would happen if the counterweight, somehow, got slowed down compared to the earth's rotation. Imagine the force at which the cable would wrap around the earth.
If scientist's can ever think of a way to make a space elevator, than I'm sure they will figure out a way to make spaceships more affordable in that same time frame.
Maybe eve sooner. SpaceX's cost estimates for Starship are comparable to those estimated for space elevators, except it doesn't need carbon nanotubes to work.
Rockets are more flexible in the orbits they can reach and locations they can launch from, and can have higher launch cadences.
If Starship, or something like it (Relativity's Terran R for example) comes to fruition in the next decade or two, space elevators will probably be DOA.
Orbital rings would still be promising, but realistically you need a reusable heavy lifter to build one in the first place, so they're more of a 'next step'.
This has me super excited. Within my lifetime I could visit space and I'm just a normal dude. Especially with the rate at which technology is progressing, the timeline they've given could be even shorter than we can hope for. They should consider a large enough rope, something that we could build around and off of. Sorta like those little desk toys that hold themselves up with tension. If something is constantly pulling on the rope, as long as it has enough pull too balance out what forces are applied against it should just kinda cancel out? Or something I think.
When the 'load' mechanism leaves the launch pad, the counterweight has to be heavy enough to prevent the load from just pulling the cable out of the sky. As the 'load' approached the counterweight, it's weight would be added to the counterweight. The lighter the counterweight, the smaller the load that could be lifted. The heavier the counterweight, the stronger the cable must be to prevent the weight of the load plus the counterweight from tearing the cable from it's moorings.
That elevated smoothly.
No, even with those carbon tubes, building vertically for thousands of kilometers just isn't possible, nevermind on a moving platform as a foundation. A space hook is far more likely to happen within our new millenia than a space elevator is, assuming we don't wipe ourselves off the map...
They shoud to build electromagnetic tower. Like gaus gun
@@proximity0 Or one of the various options with active support. A static vertical space elevator requires the most extreme strength/weight ratio of the many alternatives. Orbital rings give essentially the same advantages and don't require near-perfect nanotubes.
I thought a space elevator was supposed to cause near-death experience, so that one could duel the Pharaoh in the afterlife.
LOL
I thought that this would happen far in the future. If this works, it'll be awesome
You forget about space debris
Does anyone else remember reading a book in like middle school that takes place in different points in history and one actually takes place in the future on a space elevator? This video reminds me of that book
Was it Starclimber by kenneth oppel? At least thats what I remembered
I never thought it was possible to actually make one due to the strenght of the cable required and the dangers it faces like space debree. Maybe I was wrong
Honestly, it does seem like it's at the very edge of what's plausible with known material science, far too close to allow a sane safety margin. Maybe if something big changes on that front, but until then, not sure ^^"
I wouldn't say engineers are looking towards space elevators
I've always loved the space elevator concept. Will be a pretty massive it by some bizzare stretch of the imagination it ever does happen
One thing was touched on in this that I think is a lot more important than people realize. If one of these megastructures were to be constructed, and for whatever reason have a structural failure that led to a severing of the cable, the resulting devastation would be massive. 36000 Km is almost the whole circumference of the earth, so any way in which this structure collapsed, it would be very likely to impact a heavily populated area of the earth, and a cable strong enough to support it would cause incredible damage to wherever it struck, and would take hundreds if not thousands to tens of thousands of lives. I'm not confident that we have the capacity with any known methods of engineering to safely build such a megastructure, and it should not be the endeavor of man to embrace progress at the risk of so many individuals.
Another challenge to consider: imagine the elevator gets stuck half way through. Now scientists will need to create a space firefighter ladder.
Yet another reason to build the elevator shaft inside one of the cables, not run it (them?) On the outside.
🤣🤣🤣🤣🤣
That's an oversimplification. The tether's stress would vary at different altitude, forcing us to make the base absurdly thick. That thickness and the variation of thickness as you go up would make it impossible to have an elevator on it. There's tons of videos on RUclips explaining why space elevators are currently impossible.
@RUclips_India there are similar problems but I suppose that's a plausible solution
best thing of this channel is the videos are not too short neither too much long it's like normal❣
The next thing I expect would be a video or re-enactment of the Tower of Babel.
Imagine an elevator takes 8 days to go from the ground floor to the top floor 😅
He says 8 days !!!!
@@Ninja_Cat777 oh yess 👍
@fel.lizard nicely said 👌 👏
The main thing riding up would be cargo - and that doesn't care about long rides. A container ship takes longer.
I honestly think we cannot proceed as a civilization until we create fusion.
This is when energy becomes so abundant it becomes free, a human right and the access to energy helps us create new materials.
It seems like all of our next leaps and bounds depend on this energy leap frog we need to make.
Based on current predictions, fusion power is unlikely to be substantially cheaper that current sources. The fuel itself may be relatively abundant and incredibly energy dense, but the actual power plants are expected to be horrendously expensive to build and maintain. Much like it's cousin fission, amortization will dominate the price.
The real future of cheap abundant energy is likely to be solar, wind, and batteries. The costs of those continue to decrease while installed capacity skyrockets.
Fusion power seems destined to go the way of the hydrogen car. Long promised to be the future, but by the time it finally arrived something else had beaten it to the punch.
Everyone needs to get over this "free energy" delusion. Reactors/generating equipment and all associated transmission/distribution infrastructure needs to be constantly maintained and eventually replaced at the end of it's service life. People get paid to do that. People do not work for free.
Perhaps we will one day have machines that provide all that we need, maintain themselves and generally do everything for us so that no-one needs to work in order to survive but even then nothing is free, we will pay for it with various restrictions on our lifestyle choices.
Whatever the video is, I always come to listen his soothing voice.
I loved the michio kakus reference in the start
The materials required do not currently exist, this is still pipe dream, even more of one than fusion is now. Fusion is always close, space elevator is not.
Wouldn't the tether conduct electricity from the static electricity in the atmosphere? Could it not be harnessed?
the fact that a failure can damage surrounding countries is quite scary. not to mention a chance for the structure being hit by space debris.
Wow the intro tone brings back memory when I discovered TedEd few years ago.❤️
Imagine what it would be like for a space elevator to collapse somehow, for it to snap. Imagine something connected to the ground so long, that snapping it would cause a lot of it to fly out into space instead of collapse, it would look like gravity flipped. And imagine the part of it that's mostly in Earth's gravity, imagine it collapsing and crushing things.
Only the part of the cable that is past geosynchronous orbit would be pulled out, everything below that point would fall to Earth.
@@iunnox666 wouldn't that be most of it due to how long it is?
@@kidyomu89 No, at 2:15 they show geosynch orbit as a dotted line. About 90% is below it, although the counterweight would pull the cable out if the break is high enough for the center of mass to be outside orbit.
@@iunnox666 ah alright, damn not as fun
Para eu, que sou brasileiro os conteúdos do canal são bastante relevantes. E os vídeos me ajudam para ter uma melhor compreensão do inglês.
(English Translation)
For me, a Brazilian, the channel's contents are very relevant. And the videos help me to have a better understanding of english
I’d love to see this awesome idea come to fruition in my lifetime. 🌝
Brilliant idea.
Imagine that falling down
I always thought why they don't just build a permanent pathway (elevators) to different planets , today i got my answer 😂
To planets wouldn't be plausible due to varying orbits. Even the moon wouldn't work (nevermind the distance) because its distance from earth isn't constant.
@@Aviator27J i know. This was my 6th grade notion. But if this geostationary thing gets success then in future maybe...
An idea that can work is something from Gundam 00. By building it as a structure and having everything on the inside, it could have more of a frame to hold itself up. Though more materials would be needed for the frame and the protection of the internals, it's still a nice idea to have
Wow I learnt something new today,thank you
I personally think the sky hook is better because it isn't based on the planets surface and only needs to be 1000km long to work though there is still the risk of rocket launches fuel would only be needed to orbit meaning there is less weight and thus price to launch the same amount of materials plus sky hooks gain force when slowing down spacecrafts so the only needed power source is for the stabilisers on the ends the docking and release and maybe repair robots if needed further more they Can be built with modern tech so I hear but I'm no expert and there is likely many problems such as space debris I'm not knowleable in
Elon’s plan to move humans to Mars be like
Sup checkmark
Hahaha elon can shiieett
I think the biggest problem is going to be maintenance. If any part of said cable need to be repaired or replaced, how will it be done so that the entire structure won't collapse.
*Elevator music plays in the background*
_for 192 hours straight_
No, scientists are not actually building an elevator to space.
Inventing materials that might theoretically be capable of being used in such a structure isn't even remotely the same as "actually building" it.
Yea but they have to click bait
Well, that is not happening
This somehow reminded me of the Book "Charlie and the Great Glass Elevator"
The elevator seems to be great idea...I wish it becomes a reality too..
Also, (saying this for like the millionth time) I love this narrator's voice!!!!!!
This sounds like a nightmare waiting to happen. Can you imagine one of these crashing back down to earth? It could be worse than a nuke.
Far worse than many nukes. At least it wouldn't have the radioactivity left in the wreckage though.
This is the coolest thing ever.
Guys fun fact : people with beards are more likely to have beards than people with no beards
At last, an actual interesting fact in the comment section. Thank you, sir.
I love how these videos are all hidden lessons
This is the coolest thing I’ve ever heard of!
انتم رهيبين
No, they aren't. They're "planning" to build one, which means a bunch of eggheads are sitting around thinking of ways to do it. No material known can carry the weight of itself at that length, even carbon nanotubes.
I'm surprised with you, Ted. This is the most clickbait title I've seen from you.
Glad someone else was on that train of thought 😆
Great video - thanks.
TedEd and melodysheep posting on the same day??? today is the BEST!
No, scientists are not “actually building” a space elevator. TED: you’re better than this. No more clickbait please.
Lunacy..... waste of time resources and $$. Seriously though pfff keep dreaming! Why hasn't poverty been fixed? Insanity
This is absolutely mind blowing
the pull device can also be a space station as well and if we have that. it will be the first step to making space fering ships for extra terrestrial travel as we build shipyards.
“Congrats to everyone who is early and who found this comment”
Hello
hey
they didn't talk about the risk of the cable being pulled from Earth. That could easily turn into a catapult
Great video 👍
Hope I live long enough to see this.
Would the have to be tethered along the equator?
I like orbital rings best, but that would require a level of international cooperation that I don't see in the near future.
This is great I was thinking about this
Good idea of making elevators!
Space elevator idea has been around a long time. Build it on top of a very high mountain!
Seems like it would be easier to launch the cable from a special space station it’s linked to in orbit and let it head down to earth to a planned spot, and people on the ground connect the cable to the ground base. Than it would be getting the cable from a ground connection first and out into space. The cable could be assembled or prepared at the special space station in orbit after being carried there in segments over time.
Remember the one boat project named freedom ship a few years back? This is just as crazy.
Stories about universe is always interesting! I think it will take a long time to make, but someday it will be possible.