The space based coverage by Bloomberg Quicktake lately has been outstanding.

@business

2 жыл бұрын

Which space-related topic areas interest you the most?

@UltimateEntity

2 жыл бұрын

@@business human importance

@hansolowe19

2 жыл бұрын

@James do you have some actual sources? Or is jesus telling you it is mean to space angels?

@hansolowe19

2 жыл бұрын

@@business - likely places to find (microbial) life - space mining (as touched on here) - space neutrality i.e. must we solve our small minded political bickering and come together as the single (1) planet we are *before* we do things like colonise the moon or mars or make space elevators, or can we do those things well through (hopefully) neutral science while the planet burns and just hope one doesn't spill over into the other? - future giga-spaceprojects like the James Webb or moon landings - results of James Webb - shortages of materials such as rare metals, helium, phosphates and how to fix or deal with the shortages - sustainability of space stuff in general, is it wise to go all in on these things while the planet is in a bad way and should we perhaps fix the only planet we will ever have before looking for other planets to ruin? Just some thoughts.

@waseyrahimy6886

2 жыл бұрын

Gravitational Lensing

This is great. The next space-related video should be about potential ways to clean up space.

@pleaseenteranamelol711

2 жыл бұрын

I think cleaning up all the high-velocity junk up there will prove to be even harder.

@imperator_odin

2 жыл бұрын

Lol.. brain .. washed

@physicswcccd

2 жыл бұрын

Exactly what I thought. As long as debris can hit the cable, it's a non-starter. In LEO vehicles often need to move to get out of the way. The problem here is that the elevator would be in a fixed location, so if the debris is junk (not a controlled vehicle) it would not steer around it. If anything cut the cable, the elevator would be a rock in a slingshot.

@Davethreshold

2 жыл бұрын

Yes, humankind pollutes everything we touch!

@Siferis

2 жыл бұрын

There's an anime about this very process; they have teams sent up there dedicated to cleaning up space debris. It's called Planetes.

Brad Edwards seems to dismiss most of the very real problems with space elevators very quickly. We can only make Carbon Nanotubes in the lab, it isn't really a question of commercialisation. Commercialisation does not promise the price will go down; it might be an investment that makes slow or little returns. And rocketry is undergoing a revolution thanks to companies like SpaceX that are making space far cheaper and with far larger payloads. For comparison, Edwards said 100 T on a space Elevator would be great, but that's the minimum planned weight of the Starship launch system. His counter-arguments concerning debris don't seem persuasive. I think space elevators would be great and wonderful, but there are serious engineering problems to be faced to get there. It's not just about the money and will.

@vibol03

2 жыл бұрын

Yeah he said in the video that he was HOPING some other researchers would take his study and make a corrections on it. His sad expression was kinda heart breaking for me to see. Of course, there are many engineering problems but people are just not interested enough. If there's a will, there's a way. But in this case, not enough.

@danilegal8

2 жыл бұрын

I agree 100%, Brad was very dismissive

@MwkyLa

2 жыл бұрын

Your whole argument folds into itself, this is exactly the same argument people had used about rockets until Elon dumped Money and will on it.

@MwkyLa

2 жыл бұрын

@James Pretty much my point.

@TempleGuitars

2 жыл бұрын

@James Don't feed the trolls. They want to live in fantasy land, let them.

An elevator on Mars would be much easier to build and maintain......and make landing in such a thin atmosphere WAY safer. It's made possible by the 0.38g and brisk 24h.37m rotation.

@dhayes907

2 жыл бұрын

I want to see the Martian space hook too

@falloutmule

2 жыл бұрын

The moon first!

@lukeskywalker7457

2 жыл бұрын

Try it on the moon? Lol That would be harder, longuer that earths elevator due to it's slow rotation of 27.3 days. But wait it would also need to withstand earth gravitational influence. Who writes this stuff? Try Mars, that's the best spot for a space elevator that I know. The geostationary altitude is much lower.

@rexmann1984

2 жыл бұрын

@@lukeskywalker7457 Orbital rings are better suited for earth and the moon.

@savagesarethebest7251

2 жыл бұрын

Mars is 25h

The fact that the japanese professor spoke about how the elevator could cause wars might have been the reason why the writers of Ace Combat 7 wrote their game's story around this concept. Either way it would be dope if we one day build something like this!

@tokyoru587

2 жыл бұрын

should say to all the noobs out there, no watched Gundam 00 ? , if only oh well we can dream no ? but for energy could be

@M1ggins

5 ай бұрын

yeah, my first thought was that whichever allied bloc built one would have such military advantage that the others couldn't possibly let them build it.

4:00 "materials required to carry this much weight don't exist" -hence why its science fiction

getting stuck and waiting for the repair team to climb the 32324409883847232833882393921 ladder rungs..

He lost me when he said they didnt even have to think about collisions because there are companies tracking things.

@williamodey9833

2 жыл бұрын

He did come across as a bit delusional with a few things, that and when he's talking about the carbon nanotubes "we have them right here", no you don't, that looks like a bag of dust, not a ribbon O_o

@MaryFilkins

2 жыл бұрын

That's exactly what we all thought. Just a pull for investors to shuffle money around.

@Gregorius421

2 жыл бұрын

He might think the space elevator will just make an evasive maneuver... /s Another false claim was that losing the counterweight would increase tension at the bottom and break there too, so that the ribbon flies away. Quite the opposite, the counterweight was balancing gravity, without it gravity wins and pulls down the ribbon. Even if it breaks, only the part above GEO has the orbital velocity to stay up.

Every time I see one of these things it's always one cable stretched directly to space. With some sort of climbing apparatus attached to it. The problem with this is how would you ever repair it if it got torn or hit or scratched. If you had a giant pulley system where on the ground you had a giant real or spool the cable would go up to the space counterweight through a pulley and back to the ground to another giant real or spool. Then instead of having a climber you could just attach whatever you was sending into space to the cable and reel it up or down like a fishing pole. Then if something had to be done to repair the cable. It could be it done on land instead of 200 miles off the ground.

@JM-us3fr

2 жыл бұрын

Yeah that’s the obvious solution. Additionally, I would have multiple smaller cables, so you don’t need to repair them all at the same time

@VRtechman

2 жыл бұрын

But this Ribbon of Cable would be Electromagnetic. The Climber is more of a Maglev trane.

From a risk/reward perspective, all it takes is 1 big or small space debris and you can say sayonara to your Space Elevator

@zollen123

2 жыл бұрын

You can say the same about the ISS station.

@rockstar3840

2 жыл бұрын

@@zollen123 ISS is maneuverable. Elevator is static.

@zollen123

2 жыл бұрын

@@rockstar3840 It doesn't necessary to be stationary.

@vinayakgupta6105

2 жыл бұрын

@@zollen123 explain how would you move that thing

@zollen123

2 жыл бұрын

@@vinayakgupta6105 like a satellite

I'm so glad there's people like this that are way smarter than me, that are able to execute on long-term projects and make humanity better.

This presentation was absolutely beautiful. I really hope that we pull together as a species and colonise the stars 👍

@MadHatter123456

2 жыл бұрын

Have fun living on a nuclear reactor. Don't forget sunscreen level 2.000.000

@LordOfLight

2 жыл бұрын

The problem with that idea is that we can't run away from ourselves. It's mankind that's the problem. I suppose you could argue that we'd buy ourselves more time; but given that we'd port our technology, our industry, and our greed, with us, I doubt it'd be a very long time.

@bertnorticus1662

2 жыл бұрын

@@LordOfLight I think our problems will be solved when quantum computed AI's create new technologies and possibly new ideologies, most of which humans today would have trouble comprehending.

@MadHatter123456

2 жыл бұрын

@@LordOfLight problem is that a star isn't a planet.

@LordOfLight

2 жыл бұрын

@@bertnorticus1662 Is that meant to be serious? If so, your naivety is touching.

Seriously! The only "Space Elevator" content I've enjoyed watching, I'm literally looking for more. Credit to the who ever put this together, editor, and writter.

BBG Quicktake truly is a little gem amongst all the **** on youtube

A team within Google looked at this idea, and it was quickly dismissed after discussing the physics between the Earth's rotation and space, it would shatter before even being completed

@islamonlysolution461

2 жыл бұрын

the solar based engines will keep the platform at same place where it needed than all will be ok

@joegoddard9661

2 жыл бұрын

What I was thinking, and to be in orbit you need a lot of speed, like the space station orbits every 90 minutes, so how would you have something in orbit, but orbiting at the same speed as the earth? That’s literally not possible so to connect the bottom of the cable wouldn’t be possible? And wouldn’t lowering a cable into atmosphere while orbiting cause drag and maybe start spinning the elevator, while slowing it down and basically aero-braking ? Then causing the top to start falling back out of orbit

@joegoddard9661

2 жыл бұрын

@@islamonlysolution461 how? To stay in the same place in terms of the earth below, gravity would be pulling you in, you need to be going AROUND the planet to stay in orbit, it’s not just a matter of going up then you start floating there

@islamonlysolution461

2 жыл бұрын

@@joegoddard9661 he gave some theory platfomr is far away from earth in space which results in torque to maintain it same pace with earth and it will be all ok

@anthonyellis6831

2 жыл бұрын

@@joegoddard9661 When you are at the right height, the orbital period will exactly match the rotation rate of the earth, so it appears to stay directly above a fixed location on earth. From there, you build the ribbon down to earth and also balance forces by building the ribbon up attached to the counterweight.

It just looks like someone trying to sell Carbon nanotube technology.

From what I have seen elsewhere on YT here, the longest nanotube created so far is about a few centimeters. It is under 2 inches. 😨

@JM-us3fr

2 жыл бұрын

I’m pretty sure the record is longer than that by now, plus you don’t need every nanotube to be the length of the entire cable. This is because the tubes have friction between them, and the longer they are, the greater the friction. So we may only need the individual nanotubes to be a few meters long.

@Davethreshold

2 жыл бұрын

@@JM-us3fr Oh, o.k. Thank you J M! I DO think this can happen though. Would that be the coolest thing or what? Like Fusion reactors and the ultimate A.I. it is only a matter of time.

im getting ready for gundam 00 live action

I have to say, this video is exceptionally well produced.

When I think about space elevators, I think about the potential for terrorist attacks.

@phill2065

2 жыл бұрын

But as you’ve seen in the video, the damage done would be tiny

Seems like somebody was watching Apples version of Asimov’s Foundation.

Arthur C, Clarke fired my imagination many decades ago with the mention of a space elevator, and set me thinking about the mechanical problems to be solved. The cable was my initial stumbling block, but that could now be well on the way to being solved. Unfortunately, there was no mention of how they propose to cope with the lateral forces created by the rotation of the Earth and the inertia of the "climber" and its load. At the Earth's surface, the equatorial peripheral speed is about 1000 mph, whilst at just the height for a stable orbit (escape velocity) it needs to be travelling at 17,500 mph. The higher it goes, the faster it needs to go. This could pull the cable seriously out of plumb and even cause "whiplash" effects and uncontrolled oscillations.

@Quickshot0

2 жыл бұрын

That was actually calculated in the original work. But basically it causes the cable to bend a bit, but because the cable is being kept taught, this means this bending causes an extra force trying to straighten it out again. Now of course there is a limit one shouldn't exceed, to much of a bend and the cable won't hold up. But well that's like for any equipment, using it out of spec will be ruinous. As for where the energy for this all ultimate comes from, that would be Earth's rotation, but the total energy in Earth's rotation is so stupidly high it won't particularly matter. But basically if one launched an incredible amount via an elevator, then the length of a day might eventually be a second longer.

@albeit1

2 жыл бұрын

To accelerate that car horizontally as it goes up the cable is the real problem with this idea. A rocket on the car or at the top of the elevator would be required. And it would require fuel. And, since it would be very slow compared to a regular rocket ride to space, that rocket has to work days. So, what are advantages again?

@Quickshot0

2 жыл бұрын

@@albeit1 That's not how things like slings work, the cable itself would accelerate the cargo. Due to this at geostationary orbit you could just release a payload and it remain in orbit there. The energy for this acceleration would come from the Earths rotation.

@zazethe6553

2 жыл бұрын

@@albeit1 it's like a regular elevator in an apartment building, just higher. It doesn't need to go fast, the fastest elevator is about 75km/h. The height of geostationary is 35000km. So it could take 19 days to get to the top, with a small electrical motor pulling itself up slowly along the cable.

@albeit1

2 жыл бұрын

@@zazethe6553 don’t things stay in orbit because of the speed they’re traveling around the Earth? Anything that goes out to such an object also has to achieve that speed. How is its orbital velocity increased? By what force?

Thanks for this Bloomberg, I always wondered if an elevator to space was possible

@hans-joachimbierwirth4727

2 жыл бұрын

It isn't. Don't tkank them for lying to you!

thanks for your video and hard work

In the race for the tallest building, a building with also a space elevator would trump all other possible heights.

Perhaps you should ASK a scientist who knows what he's talking about. This report is SAD. This space elevator CANNOT be made today, and anyone who says it can is WRONG.

After watching this video my first thought was, ‘Hasn’t it been dismissed because of the risk and costs?’ then I couldn’t stop thinking about getting to orbit; I mean who can, when they think it to be so easy that they could just hop an elevator to orbit??? My thoughts went to things that are actually likely to happen because the technology is more-sound than hanging a wire from orbit that is likely to snap sooner than later… If you have read my comments then you know the best and safest way to get to high altitudes is a blimp… I have written briefly about a high altitude blimp station made up of 8 blimps paired 200 meters side by side 100 meters between nose and rear. I would guess the blimps are 100 meters long that would hold a platform of 200 meters wide and 800 meters long, landing pad, floating at 40,000 feet or 12,000 meters. A passenger jet could land and refuel as the passengers load a Space Jet with vacuum engines to fly to LEO where Orbiting Stations are for Vacationing to or for testing at an Orbital Laboratory. I remember a Disney Balloon that would lift to orbit for vacations… Why not leave the balloon in orbit and drop a cord of carbine nanotubes, and use that to lift materials to orbit??? The cable could be wound up when not in use, and the balloon could fly around the world to lift stuff from Russia one week and the next week lift stuff from Huston, Texas… You might ask what about the birds that nibble at the wire as in when a mouse chewed on an electric line in that 911 show and was mistaken for a ghost, back to reality what if it were to snap??? In the video they say if the string of Nanotubes were to fall to Earth, it would be as if a string of feathers were to hit your head…that would take a minute to notice? No, they don’t say that but have you ever been whipped by nanotubes, no, you probably would have a hard time feeling that? ?think of threads?

@hans-joachimbierwirth4727

2 жыл бұрын

It has been dismissed because of real physics.

Everybody is a gangsta until it says 320 blocks limit

assuming your cable is strong enough to maintain tension without breaking you still have deal with adding the angular momentum to the stuff you’re lifting which will pull the cable sideways. You’re not just lifting, you’re accelerating laterality...sideways.

@Quickshot0

2 жыл бұрын

The side ways effect is understood in such systems. You see that in slings if you move an object along it. So long as the outward force is strong enough it will only get pushed sideways a bit.

You haven't proven that your technology is scalable. Your limit is the the defect rate in the tether, until you can reduce the defects you won't make a long enough rope.

@JM-us3fr

2 жыл бұрын

That’s probably true, but certainly the whole cable doesn’t need to be without defects. As long as the nanotubes have long enough gaps between their defects, the friction between the tubes should hold it together. This also means we wouldn’t need singular molecules the length of the cable, but could instead have them staggered, sticking together through friction alone.

Really amazing ideas....🙏🤝🗺🌍👽👽👽

If it is built as a modular stage system, it eliminates most of the problems brought up in this video. With the added benefit of being deployed in smaller sections as opposed to one single ridiculously long tether. With multiple tethers at GEO where there is virtually zero weight penalty and fewer tethers as you move out from center, you also eliminate the need for tapering.

I genuinely hope you find an investor or entrepreneur taking this on! Thank you Bloomberg for bringing attention to that and accelerating human progress!

Every issue he mentioned is a legitimate problem that we have no solution to currently and then he proceeds to say its no problem. Firstly nanotubes have even made outside the lab and even inside teh max length we have gotten is 1/2 a meter. Then, tourists might face on a freaking minumum 10 day journey togo up a space elevator. Infact for personell the elevator doesn't even make sense it just takes way too long; the elevator could be useful to bring down raw materials from asteroids or producsts manafctured in space like ZBLAN or bioprinted organs. And then he says that any comerical enterpise could build it? 8bn is a crazy optimistic number. The amount of launches to build the counterwieght infratcutre and the rceeiving infratcutre would alreayd total more than that. Now this guy just easily dismissed debris as a problem saying that oh commeical ventures track it, hello do you realise taht almost all of the object smaller than 10 cm are too small to be tracked. This guy is starting to sound more like a lunatic then an optimist

Force equals angler acceleration times mass. As the mass decrease in height it decreases in speed and the force applied on the "elevator." increases. F = α * m: Think it out, the forces and acceleration could be immense for just a little change in height. α = h2 * v2 - h1 * v1: You need thrusters working to counter the extrema forces caused from the mass. And, if you could get a 'cable' and end foundations that strong, a change in height of a ton of material could speed up and slow down the rotation of the earth. You would also get a whiplash effect with the cable as it tries to keep synchronized over the same spot on the earth. This is the same for 'up' only in the opposite direction.

No way that Space Elevator would only cost 8 billion lol.... More like 800 billion. crazy idea.

as of now almost imposible to make, from the material and many other thing

Space elevator could be employed in precision sampling or mining from asteroids. Landing on asteroids is very challenging, due to its low mass.

@kedrednael

2 жыл бұрын

So how could space elevator help then?

It was glossed over, but we still don't have the tech to build the cable for a practical orbital elevator. If we do ever get the tech to make cables for orbital elevators, we will see it coming decades in advance because the wonder material will already be revolutionizing industry.

@Quickshot0

2 жыл бұрын

Technically to an extent it already is, but yeah, carbon nanotubes still need more work.

The repercussions the Japanese professor said sounded like a plot from the Gundam series.

@aujulon

2 жыл бұрын

Gundum 00 a classic lol

If you approach problem to reverse pyramid, you can already build such cable using existing materials. Trick is that it would get thicker the higher you go. With regular carbon fiber or zylon you would achieve same effect much easier, thing is you need start building from top to bottom.

Any problem with this kind of space elevator where the tether is extremely lightweight, strong and thin is what happens when a micrometeorite hits it? The space station is able to detect and use its thrusters to avoid micrometeorites from hitting its systems, what kind of space elevator do to stop its tether from being ripped apart by a very quickly moving object? I'm sure there are ways that could be solved, but how practical are they and are those defensive methods feasible yet?

@andriusdi

2 жыл бұрын

"The space station is able to detect and use its thrusters to avoid micrometeorites from hitting its systems" I think you are mixing up something, micro meteorites are very small and undetectable by any systems on space station. Then only thing is they do little damage and are very rare to hit anything. Space station is able to avoid large debris, either it's a space junk or some other larger object.

@willshumway1627

2 жыл бұрын

@@andriusdi I am more specifically talking about micrometeorites, what happens when objects that are too small to be detected keep hitting this super thin 3 ft long ribbon? The space station uses essentially spaced armor to slow down and eventually stop those kinds of objects from puncturing the station, but what about the elevator? Practically speaking my guess is they would have to continually repair and replace the tether. It's not like it's impossible, but I would certainly want to know how, and for how much money, repairs would be done.

@andriusdi

2 жыл бұрын

@@willshumway1627 Well you stated this "The space station is able to detect and use its thrusters to avoid micrometeorites from hitting its systems" it's wrong and I just corrected you, nothing to worry about.

If this becomes a reality, I'll be very happy as not only it's better or cooler, but also because we won't be destroying the earth with all those gases

I can vaguely remember a Science Fiction concept in a kids' comic in the 1940's called, "The Black Beam." Things placed into the beam could then leave earth and journey into space. Haven't a clue what the "Black Beam," was, but it was obviously an idea. It's from ideas that everything else comes.

The lack of scientific knowledge and the lack of media scrutiny is amazing. This concept was debunked many many times. We do not have technology to do this. “He couldn’t find a reason why we cannot do it”??? What type of search did he do? High school library??

I have been following this idea for over a decade. It is our future.

Going to take a lot of magic beans to grow a beanstalk to space

We just got to push a little longer until we got the car banana tubes

The year Kessler effect happened.. we will know if space elevator can be built.. lol

Space elevators may be the right solution to mankind's quest to habitate and explore planet Mars in the future. To build a space elevator in Mars should be a priority in the future.

With basic force field technology(since we are already entertaining one science fiction concept), couldn't that help deflect most debris on the path to the elevator shaft/ribbon?

A space elevator of some sort is the ONLY way we are going to achieve space exploration and colonization of any significance scale. Rocketry is just to economically and operationally inefficient---not to mention dangerous.

Excellent music ( background )

Question, a wheel, big , going around earth, also spinning at or near orbit velocity?

We will use our Carbon Nanotubes (*coming soon at scale... maybe) and move up to a 100 tons a day or couple days. SpaceX's Starship (if it works) would make any risk of building a space elevator not worth it anytime soon, but it would make it easier to build one.

@kengollon9537

2 жыл бұрын

While a huge fan of SpaceX, the requirement of 7-9 refuelings to reach either the moon or Mars is dampening the hopes of starship opening up space. A space elevator could be used to bring up fuel without the risks of multiple flights needed to provide propellant to starship thereby allowing more "starships" and less "tankers".

@pewterhacker

Жыл бұрын

SpaceX is currently charging NASA around $70000 per/kg to deliver payload to the ISS. Starship, when it works, will not be 700X cheaper. It might be 2X cheaper, but even that's a stretch. Starship's innovations just don't make it significantly more cost effective than Falcon9.

Very cool.

honestly if they are building a space elevator just force all other satellite operators to bid for new orbits that avoid it

I don't like it, whe the video doesn't answer it's own question. We still miss 2 parts: the cable and the climber. Other than that, it's great.

Build 3 elevators at one location. 2 of the 3 are for maintenance/repairs, emergencies, and can shield payloads with synchronous movements.

@kedrednael

2 жыл бұрын

You can let many cables down to different places on earth from one counterweight. Then if one cable breaks the counterweight would not fly away, and you'd have multiple space elevator ground access ports.

No one seems to discuss the effect of imparting angular momentum to the mass that is being raised. (if the elevetor already exists) Any load must accelerate from 0.46 km/s at ground (equator) to orbital velocity, ~7.4 km/s at low Earth orbit height, as it ascsends. The force needed to accelerate this ascending mass will pull on the cable sideways and tilt the counterwight off it's starting perpendicular angle in reference to Earth. To correct for this you would need to accelerate the counterweight back in the direction of Earth's rotation with rockets. This is *just one* of the reasons why the answer to the this video's title is a firm "No".

@_Teo_Dor

2 жыл бұрын

This is the real problem. No one is even considering it. Why do you think that rockets mostly spend energy on gaining lateral velocity?

If not Space Elevator I think still need a spaceport for arrival & departure passengers for space ships (if the don’t need to make repairs on earth) since it cost so much energy to takeoff from Earth 🌎. A small spaceship to take passengers, energy and other stuff to the spaceport is much lighter than the spaceship that needs to transport them long distances.

Interesting stuff, though I'd like to see an explanation of how the elevator cargo being lifted would accelerate from 1000mph West to East (with Earth's surface rotation) to the required 8000 mph or so West to East at 22,000 miles altitude. Also, the cable would (at 300 miles low earth orbit altitude) be going about 1000 mph W to E, while the orbiting space junk and satellites would be going by (W to E) at 17,000 mph. Sketchy. Also some discussion on Van Allen radiation affecting carbon tubes would be useful.

@Quickshot0

2 жыл бұрын

It works via the same principle of a sling accelerating something as you let something move to the tip. But basically the string/ribbon gets a bend and at the base you have to handle some of the force coming down the cable/ribbon to you. The numbers are bigger, but it's the same principles otherwise.

@JM-us3fr

2 жыл бұрын

Also, there have been plans to clean up the Van Allen belts ever since they were first discovered, and it probably wouldn’t be too difficult; we have just never needed to.

This is the first step to building a dyson sphere and advancing the human species to its next stage in civilization.

Unfortunately although nanotubes are incredibly strong, that strength does not carry as the fibres get longer, such as in strands needed to construct a space elevator, hopefully they find a way to overcome this....

Active-support space-towers? Yes, they're getting closer to reality. Mass-drivers to get a spaceship into orbit without using fuel? Yes, they're also getting closer to reality (especially to get cargo in orbit, since you need a much shorter track and can get a much higher acceleration than humans can survive, which makes it cheaper). And no, the space tower won't have a counterweight to keep it straight, it will be pushed up and into place using active support. Whether that active support is from lasers, or from something like water being circulated through the system, is irrelevant. The space-tower could even be telescopic, so you can retract it when the weather is bad, to minimize the possible damage, or when it's not in use for long periods of time, to do maintenance and reduce the cost of operation. It doesn't even need to get far enough into orbit for space junk to hit it, since most of that would burn in the atmosphere before reaching the top of the active-support space-tower. We could even have landing strips on which spaceships to land on the tower, or even entire cities, and get solar power by using power satellites which then beam the energy with infrared rays up to infrared antennas which to then deliver it back to earth and use some of it to keep the tower up, and it would also allow for spaceships to be built into reduced gravity, so people could carry more weight around. And that would be prime real estate for building rotating habitats like O'Neil cylinders, in which to have living people and even grow food. You can even make a launch-loop by having two or three active support space towers connected with eachother, or having different places connected to them. This could lead to going to the other side of the planet taking a mere 1 hour. And once the tech is advanced enough, people could finally start colonizing the space, starting with staying in space and orbiting Earth, then orbiting the moon, then orbiting other planets while scanning for the right places to colonize, then colonizing the planets themselves, then maybe even tethering a few hundreds to a few thousands of rotating habitats at 1g (the same acceleration as Earth's gravity) to the nearest star (Alpha Centauri) located at 4.37 lightyears would take around 4 years or less for the travelers and 6 or more years for those left on Earth. This means that they have to use very large antennas with laser-based communication back-and-forth to trade science done on board in exchange for new science from Earth, so the new colony doesn't get so outdated that the next wave of ships would completely dominate the first wave of ships sent. It also means that enough people have to be sent there to ensure humanity can spread even if something happens to Earth and even if the radiation from space were to make most people sterile, which will likely require using artificial wombs like scientists already used to birth animals without the need of parents, from frozen baby batter and eggs, but using the baby-batter and eggs the people on those ships collected before leaving the solar system (to minimize the risk of contagion). This would likely require entire websites (like youtube) to have almost-full physical backups on those space-ships, allowing people to consume content from them even when away from Earth. This would also require both digital and physical books being carried. And not only that, but the convoy will likely become legally it's own country, including having new people join the convoy using rotating habitats moving at 3g, which would only take 1.7 years for the travelers or 5 ears on Earth to get to the same star. In fact, with that kind of acceleration, the rotating habitats would likely not even rotate for humans, maybe only for growing plants and animals in higher gravity, if doing so is advantageous. Instead, the rotating habitats would only be rotating once coasting inside the solar system at the right distance from the star, while studying the planets to choose for resource-harvesting and later habitation. Mass-drivers would likely be pre-fabricated, for exchanging data caches with Earth at speeds much faster than humans can afford (like 20g, which would take a data cache to the star in 5.2 months for the data-cache, or 4.6 years for the people who are left on Earth). This What I mentioned is the perceived time for the travelers (how much time passes for them, and how much they age thanks to that), and the time perceived on Earth.

@jmuench420

2 жыл бұрын

I don't think you're gonna to use water to support anything in space, remember if you want your active support structure in orbit whatever you're using for support will need to exceed orbital speeds. The active structures I've seen proposed by serious people generally have a solid metallic ring in a vacuum tube accelerated and stabilized by magnets. There's three basic formats for the same technology: launch loops (basically a pair of arches/elevated causeways to support mass drivers), space fountains (a horizontal loop on the ground transitioning to vertical and back down again, often shown bundled to support an elevated structure and/or mass drivers) and the big daddy, orbital rings (a bundle of those same tubes but built around the planet in orbit, forming a massive platform for structures and/or mass drivers).

@simonbenn5340

2 жыл бұрын

I want what your smoking.... gotta be some strong sh!t. Lol 😆 🤣

@donquique1

2 жыл бұрын

You have mastered idiocy. Congrats.

@SapioiT

2 жыл бұрын

​@@jmuench420 Space fountains can use water (thanks to strong-enough walls to resist the pressure) to push an updraft tower (a space fountain, if you will) to be taller than we can build with conventional methods. Laser or a liquid metal or other particles can be used to get even taller, for a higher price. Launch loops are like space fountains, but sideways and connecting two places or more. The orbital ring is like a looping active-support space-tower around a celestial body (can even be around the sun, or around a black hole, or around an asteroid). For example, you can reach double the height of the tallest building on Earth with active-support using water, especially if you use a pump to push the water down faster, which in turn pushes the top of the structure up a bit more. Since the water would be looping, you only need pipes which to survive the water moving fast and stopping abruptly, and the energy to move it fast enough to keep the structure up, because the water not moving (ignoring that the tower would fall if that happened) would act like the counterweight of an elevator.

@SapioiT

2 жыл бұрын

​@@simonbenn5340 Just because you don't know enough physics _(quick-edit: and technology)_ to know what is possible with current tech, doesn't mean that what I'm saying is not possible and cheaper than sending ships in space conventionally.

we barely have a space station, it seems far.

@yelectric1893

2 жыл бұрын

ISS is something

This is the best space elevator content I have seen on KZread.

@IllusiveDude

2 жыл бұрын

look up Isaac arthurs video on the same topic.

Bloomberg quicktake, you guys are putting one great video after another. Great job

Last time when a Japanese person talks about Space Elevator and potential space war. A Gundam appears.

I think everything that takes us to space will change how we interact with space

Even if we're closer to WW3 than Moon base/city/whatnot or a class out war between poor and the ultra rich, Bloomberg Quicktake is going place with this type of video content.

NASA spent 10 billion dollars on nearly 30 years of work, not putting it into perspective at all. The cost of JWST is really cheap overall considering what it's setting out to achieve.

Awesome

I think he’s a little more optimistic than he should be, but I’m certainly optimistic. One thing critics like to point out is that the cable would need to be a perfect crystalline molecular structure of carbon nanotubes, but this is not true. You only need the molecules to be long enough to create enough friction between them (via Van der Waals forces) to match their tensile strength, which may only be a few meters. Space debris can be cleaned up, and so too can the Van Allen radiation belts, both for which there has been plans but no one has gotten around to actually doing it. The elevator would also make a lot of satellites obsolete, since we could bounce signals off of the elevator instead (at least, half the planet could). There is still inevitable damage caused by material fatigue, micrometeorites, or other natural sources, so I think the best solution is to have multiple cables which loop around a pulley at the counterweight. This allows us to replace damaged sections of the cable by reeling them down to earth, and also allows for flexibility in the length of the cable as it may be affected by the Moon or the Sun. Safety mechanisms like retrorockets on the counterweight or a severing device on Earth would be a given. And let’s remember the payoff: you will be able to get anywhere in the solar system just by letting go of the cable at a desired length; no rocket fuel required. And if you aim at Jupiter, you can even leave the solar system.

I can't stand the fact that KZreadr's keep repeating the misinformation that the prices of launching mass into space with rockets has "come down dramatically" when the truth is, when you look at the hard data, it has actually increased dramatically.

So cool

We should really cut our teeth on skyhooks before thinking about elevators. They might actually be practical for Earth use.

TRANTOR INCOMING!! PRAISE EMPIRE.

Great Idea until you factor in Terrorism. You only need to damage the ribbon and the whole Counterweight structure is catapulted into space.

I can’t wait to see the first people break down on it

this idea always had a lot of questions with it

Acutely the Japanese working on that cable climber has debunked space elevators a practical method to go into space. If they can’t make a mechanical climber that can go up an angled rope way up a cliff with no weight attached. Then it will not be possible to do it on a vertical cable. In fact it’s hard to make elevators that go all the way up really tall buildings. They usually stop part way.

The space elevator could double as a debris cleanup station if equipped sufficiently. Nets, chaff launcher, harpoons, magnets, etc.

@tomservo5007

2 жыл бұрын

there's no way a space elevator could work

@Mrbfgray

2 жыл бұрын

@@tomservo5007 Only material strength gets in the way of it fundamentally working. Whether or not it could *last* with orbital debris is another thing.

Betteridge's Law of Headlines strikes again.

A space elevator would make it easier to get facility up in space to deal with space junk

That elevator will have the best security system ever

Equatorial orbit, zero inclination orbit, is not that interesting for many space applications.

Instead of building an elevator, is it possible to just lay an electric cable and let the satellites draw energy from it (like a train cable)? Basically, an electric satellite.

@kedrednael

2 жыл бұрын

There is still gravity in space. To stay in space low above earth the satellites are moving at 8km/s sideways. 20 times faster than a bullet. They are going around the earth 16 times a day. So no, you can't connect a cable to a satellite. Btw satellites are already electric, they were a driving force behind solar power. Exactly because you can't refuel them or connect them to a cable easily. Also because there are no clouds in space.

They keep implying we can build it today, which is a huge lie. We can only make them a few inches at best. And they need to be made as one continuous, perfect string. You can't just make a bunch of short pieces and glue them together, that is not how they work. About the moon, the atmosphere has nothing to do with needed strength. It is the extreme length, and any material that we can reliably make would snap under it's own weight. I haven't checked, but the moon could be feasible, it has much lower gravity, and thus a much shorter cable would be needed. Not really practical though, since a massive cable would need transported there first.

As long as debris can hit the cable, it's a non-starter. In LEO vehicles often need to move to get out of the way. The problem here is that the elevator would be in a fixed location, so if the debris is junk (not a controlled vehicle) it would not steer around it. If anything cut the cable, the elevator would be a rock in a slingshot.

@JM-us3fr

2 жыл бұрын

Plans for cleaning up debris have been in the works, with or without the elevator; it’s just a matter of actually following through. If the cable gets severed, it’ll be the lamest disaster ever. Retrorockets on the counterweight will guide it back to LEO, most of the cable will burn up in the atmosphere, and the rest will land gracefully with less weight than a handful of lint. Also, there are plans to make the base a mobile platform, so the cable can dodge larger debris, but I don’t think this will be necessary since a gigantic object in the night sky will make most satellites obsolete.

It was fantastic idea

Seems not necessary if Spacex succeds with Starship imo

The lower part of the space elevator should be located on a flying airship in order not to touch the ground, so that the cable could not twist around the planet. (!)

I wouldn't have thought a material strong enough for the cable was in reach ... whaddayaknow? :) Wonder how much tension the foundation have to deal with. Possible to keep the whole thing in a near balance? Or more tension the further down the cable?

@md.mohaiminulislam9618

2 жыл бұрын

Earth is always spinning, then there's debris that always enters atmosphere. Simply a lunacy that can easily be rendered useless at any given time.

8 billion dollars... is he shopping his space elevator at Walmart? That's ridiculous. Nobody mentioned how much the manufacturing robots would cost to build and program. I would like to talk with Brad, I have many questions

@Quickshot0

2 жыл бұрын

He did write an extensive paper on it, I actually read that back in the day it was a pretty interesting read. But part of the reason on cost is probably because there isn't actually that much to construct, all you need is a single cable/ribbon and a ground base to attach it to. Ground bases have a known kind of cost depending on how big you make them, so it depends what you want to do, but for instance you can buy up oil platforms in the hundreds of millions range I thought, plus costs to rebuild. A lot of the rest of the cost is the ribbon and the cost to get it at orbital speed because obviously you can't just throw it from the Earth in to the sky. Well it probably helps to realize the entire ribbon only might way a few hundred tons as well, a construction involving that scale of weight obviously changes the cost pictures a bit. Still, the original paper had a bit more details and ideas on how you might do it.

Bloomberg Quicktake: You neglected to explain _why_ transporting payloads to orbit via space elevator is so much cheaper than current methods.

@defenderred1212

2 жыл бұрын

He explained that already. Current launch methods require large amounts of fuel to lift a small mass into orbit. The space elevator will use electric methods and maybe cost dollars per pound.

Has any allowance been made for the tidal effects of the Earth's gravity on the elevator? The strength of the force of gravity varies with inverse square of the of the distance from the Earth, in this case. This will causes a stretching effect on the ribbon, increasing over greater distances. This effect, I believe caused a moon of Saturn to be broken up to form Saturn's rings.

@JM-us3fr

2 жыл бұрын

Tidal effects of the earth would cause the tension to be unevenly spread across the cable. We could make the entire cable thick enough to handle the max tension, or possibly taper the cable to make it thicker where the tension is greatest. This was proposed in the original paper

These projections of the extreme efficiency of a "space elevator" sound similar to the claims that were originally made for NASA's Space Shuttle program... and that program turned out to be an order of magnitude less efficient (i.e., more expensive) than assumed, and an order of magnitude more dangerous than had been assumed...

@JM-us3fr

2 жыл бұрын

Both of these problems were due to the Nixon administration cutting funds to the development of the Shuttle. By taking a cheaper route, they made it less effective and more dangerous

Did Bloomberg hire Neil Gaiman to narrate this segment? Sounds just like his accent.

Wow Dr Brad clearly doesn’t understand how rockets leave the earth, newsflash it’s not in a straight line, so dropping a cable is gonna be a huge problem