1,000km Cable to the Stars - The Skyhook

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Sources: sites.google.com/view/sources-skyhooks/
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Getting to space is incredibly hard, expensive and needs a lot of resources.
A more efficient way to get there is a Skyhook (or Spacetether), an ever rotating cable with a counter weight, that catapults spaceships from earth orbit into the depths of space.

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  1. Kurzgesagt – In a Nutshell

    Kurzgesagt – In a Nutshell

    שנה לפני

    You want to learn more about space? Check out our space products on the kurzgesagt shop - all designed with love and produced with care. Getting something from the kurzgesagt shop is the best way to support us and to keep our videos free for everyone. ►► kgs.link/space (Worldwide Shipping Available)

    • NeverFar BMGO

      NeverFar BMGO

      19 ימים לפני

      @Nasir Goldbourne bruh

    • Smite No_ One

      Smite No_ One

      10 חודשים לפני

      @Sanja Glavasevic you are correct. But what is this? An object to make space travel easier because *We don't have good space abilities YET* This is in-efficiant if we had good space abilitties. Good cheap rockets. and so on. This is a bad idea if we had good travel capabilities. We have no need for this if we have good rockets. BUT untill then this will do. Besides it will take a long time to craft into mars.

    • Sanja Glavasevic

      Sanja Glavasevic

      10 חודשים לפני

      But Phobos will eventually crash into Mars and bring the skyhook with it

    • Smite No_ One

      Smite No_ One

      10 חודשים לפני

      @Ioan Mitru you make avirus to kill a large portion of the population and ether spend the money earned from a already known cure or from the the dead victims ether giving yourself a polictical advantage or spend it on space ships.

    • Ioan Mitru

      Ioan Mitru

      10 חודשים לפני

      but how to make a space ship so powerfull and ceap

  2. M Usha

    M Usha

    שעה לפני

    The entire humanity depends : rope

  3. Lleraq


    4 שעות לפני


  4. Brenda Dean

    Brenda Dean

    18 שעות לפני

    The impolite industry dimensionally hug because aries notablely murder mid a square profit. spiky, disagreeable workshop

  5. PoorMans Chemist

    PoorMans Chemist

    20 שעות לפני

    LOL! This is Elon Musk levels of ceazy. When the tether breaks (and trust me one day it will) not only do you kill everyone on the tether and the station but you kill people on the ground as the tether, the station, or both slam into the Earth at near orbital velocity.

  6. Creeper crazy

    Creeper crazy

    20 שעות לפני

    A sky hook could be a launcher for building a dysentery sphere

  7. Sangwoo


    21 שעה לפני

    One mistake and you’re in deep space Suits my masochism

  8. nived gned

    nived gned

    יום לפני

    what about the sudden acceleration

  9. feed my animals 2

    feed my animals 2

    יום לפני

    What if you miss the tether

  10. Nathaniel Karafilis-Spensley

    Nathaniel Karafilis-Spensley

    יום לפני

    I wish kurzgesagt ran the government

  11. MyNameIsJSY_


    יום לפני

    Kids in 2070: oh, not again, skyhooks are old and boring!

  12. Albert Iteracion

    Albert Iteracion

    2 ימים לפני

    I wish Elon Musk and SpaceX could see this, and also colonize Moon first

  13. HuNgerforrock


    2 ימים לפני

    wouldn't the acceleration kill the passengers?

  14. muhammad mubeen

    muhammad mubeen

    2 ימים לפני

    Saying some thing is very very very easy that's like 3 times or may be more easy but working on some is much much much much much more tough than u think

  15. raja


    2 ימים לפני

    Imagine flinging yourself from the phobos tether heading to mercury but actually got flung into the sun

  16. Ruth Bowman

    Ruth Bowman

    2 ימים לפני

    3:14 kugsaget: to see something moving at March 12 me : march 12 lol

  17. Thiago Taquemasa

    Thiago Taquemasa

    2 ימים לפני

    0:18 looks like falcon heavy

  18. Rinaldo Casana

    Rinaldo Casana

    3 ימים לפני

    Someone show this to Elon Musk

  19. GeekonStreek


    3 ימים לפני

    Even if there was 100% chance of death by space I would be the first person to sing up, asumeing they need an idiot to test with 😂 im just saying NASA no pressure 😂

  20. Seb P

    Seb P

    3 ימים לפני

    Wait what about g force's? Or am I dumb.

  21. aseituna


    4 ימים לפני

    what about the g force?

  22. Wesley Luke

    Wesley Luke

    4 ימים לפני

    Thats funny nobody is talking about the doggo boi barkin' at the end of the video

  23. Thạnh Phạm

    Thạnh Phạm

    5 ימים לפני

    The more modern science, the more dead. The west has the most immunizations in the world, 1,7 billion people died from the virus in the west. Poorest Tanzania in the world, Tanzania has no money to buy vaccines, Tanzania does not die of A virus

    • x -wing

      x -wing

      יום לפני

      @TRAINAMOTO ive seen this guy before just ignore him he is a complete moron



      4 ימים לפני

      What the hell does that have to do with the topic of the video?

  24. Team Seven

    Team Seven

    5 ימים לפני

    Coolest 😎

  25. Ajit Yadav

    Ajit Yadav

    5 ימים לפני

    Well I had a Question in my mind like what If we take rope and bind on side of it on earth and the other on mars through a spaceship how would it look like😂😂what if we try to go on mars by climbing that rope🤣🤣🤣

  26. CarrotSword Gaming

    CarrotSword Gaming

    5 ימים לפני

    7:31 We were just talking about space travel, you mentioned curiosity and it made me think about the Curiosity rover :'(

    • Cosmic Gaming

      Cosmic Gaming

      2 ימים לפני

      *It’s getting dark, and my battery is low.*

  27. Barbosa Fabricio

    Barbosa Fabricio

    5 ימים לפני

    I had a question thinking "if it is supposed to charge with rockets coming from the outside, how the heck are we going to keep launching rockets?" Then I thought about catching space waste or that the tether might have way more momentum than I thought, so nevermind--

  28. Damien Millar

    Damien Millar

    6 ימים לפני


  29. harshvardhan singh

    harshvardhan singh

    6 ימים לפני

    Lmfao if you miss the tether when you are returning from mars , its a one way ticket straight into the sun 😂

  30. Williamgaming _YT

    Williamgaming _YT

    6 ימים לפני

    Uh juperder and Sadern are gas giants

  31. Eydok


    6 ימים לפני

    "Use it or lose it" get's a whole new definition.

  32. Richard Stout

    Richard Stout

    6 ימים לפני

    there is a way: a space elevater

  33. Rafi Yagami

    Rafi Yagami

    6 ימים לפני

    Elon musk needs to watch this.

  34. FoxHawkPvP


    6 ימים לפני

    You could combine this with the asteroid mining probes to help them get to asteroids.

  35. Dhruv Gulati

    Dhruv Gulati

    8 ימים לפני

    OPEC did not like that

  36. Masud Hassan

    Masud Hassan

    8 ימים לפני

    People in the year 2100: We Made Flying Earth and Dyson Spheres! On Other Stars And Stellar Engines

  37. Tenuun Temuujin

    Tenuun Temuujin

    8 ימים לפני

    Everybody gangsta till you miss mercury and hit the sun

  38. Thibaut D

    Thibaut D

    9 ימים לפני

    I get your enthusiasm, but the sources and literature you used are superficial regarding important questions. In particular, Moravec and co have only superficially analysed the long-term dynamics of the spinning skyhook. This dynamics is quite complicated I think, and one should be wary whether the hook's spin energy will not be drained over time due to tidal locking or something related. Conservation of angular momentum does not prohibit such a draining: it is the sum of the orbital angular momentum and the spin angular momentum which is conserved and there can be a flow from the latter angular momentum to the former. I have not seen literature or simulations which analyse this question and with some bad luck this might be a show-stopper, no?

    • Thibaut D

      Thibaut D

      יום לפני

      Isaac Arthur's video on skyhooks goes more in depth: seems "tethers unlimited" has done more research in depth.

    • Thibaut D

      Thibaut D

      יום לפני

      @x -wing Sure, but this is a quantitative issue (not qualitative): how much proppelant do you need for that? What cost does it involve? On the qualitative side: can those thrusters survive those entries into the atmosphere over many cycles.

    • x -wing

      x -wing

      יום לפני

      he literally explained why in this very video, he said that the tethers might still have electric or chemical thrusters to give them additional momentum.

  39. sam p-w

    sam p-w

    10 ימים לפני

    I'm honestly quite confused about why we (NASA) are not working on this right now...

  40. Snowy's Hedgehogs

    Snowy's Hedgehogs

    10 ימים לפני

    Is this all messed up with all the LEO satellite musk is putting up?

    • Thibaut D

      Thibaut D

      9 ימים לפני

      I guess the skyhook can sling objects to higher speed if it orbits the earth's equator in a direction opposite to the earth's spin. But since our space exploration has a history of bringing satellites in equatorial orbit in the same direction as the earth's spin, I guess this scenario for the skyhook is ruled out (for safety reasons: avoid collisions at extremely high velocity). Not sure though, I'm not an expert.

  41. Kevin Durr

    Kevin Durr

    10 ימים לפני

    this kinda breaks the laws of physics

  42. Mache Polo

    Mache Polo

    11 ימים לפני

    ,,Not again,, 😄😄😄😄

  43. elephantperson _10

    elephantperson _10

    11 ימים לפני

    why dont we just do it then...

  44. Dominic SUNG [10S1]

    Dominic SUNG [10S1]

    11 ימים לפני

    This is the scariest rollercoaster ever

  45. Neo Linnstrabd

    Neo Linnstrabd

    11 ימים לפני

    im gonna send this video to Elon Musk

  46. Tortoise Lover

    Tortoise Lover

    11 ימים לפני

    thanks for telling me about something that i won't ever see in my lifetime.

  47. Apophis Bane

    Apophis Bane

    12 ימים לפני

    Kareem Abdul-Jabbar's Skyhook???

  48. 48 Yashveer Bora

    48 Yashveer Bora

    12 ימים לפני

    Imagine the tether hitiing sattelites..... *playing cricket in space...

  49. Lily_


    12 ימים לפני

    Why don't these exist yet?!?

    • x -wing

      x -wing

      יום לפני

      because nobody will build one

  50. akkostol


    12 ימים לפני

    it makes shuttles go yeet, let's make this

  51. Alphahurricane


    13 ימים לפני

    this is far more fantasy than a space elevator

    • Alphahurricane


      יום לפני

      @x -wing nope, carbon nanotubes will be enough resistent to make it, the problem as now is the cost. i prefer a very expensive tower than a fidget spinner at the same level of risk

    • x -wing

      x -wing

      יום לפני

      @Alphahurricane except the space elevator requires materials which we either can't get or don't exist such as nuclear pasta and the space hook doesn't so a sufficiently advanced computer with a good AI would allow the sky hook to work with current materials

    • Alphahurricane


      יום לפני

      @x -wing as said in the video you have 60-90 second to catch a hook at mach 12 (14800 kmh or 4 kms) maybe even less time at greater speed because of spinning. its too much complicated, too much errors can occour. even a small error in our technology results in explosions as now. a space elevator is a building, the same threats of the skyhook but more simple

    • x -wing

      x -wing

      יום לפני


  52. Karthikeya Seetha

    Karthikeya Seetha

    13 ימים לפני

    You all had made my life more curious. Thanks!

  53. Yoder Osvaldo

    Yoder Osvaldo

    13 ימים לפני

    The heady clock complementarily water because rest repressingly stamp despite a second-hand step-brother. brash, lackadaisical elephant

  54. Lucas Garcia-O'Donnell

    Lucas Garcia-O'Donnell

    13 ימים לפני

    Even the tech that is impossible in my lifetime gets me super excited but to hopefully see things like this created is another level, thanks for the great content

  55. Kellee Barton

    Kellee Barton

    14 ימים לפני

    This is an awesome idea

  56. tix master

    tix master

    14 ימים לפני

    2:03 The spaceship gets slapped at 6,000 km/h XD

  57. Gabriel Corran

    Gabriel Corran

    14 ימים לפני

    Ma boi kuzgesagt being the saviour Jesus Christ of sci to

  58. Jack Sweeney Benzon

    Jack Sweeney Benzon

    15 ימים לפני

    How would a tether to the moon work?

  59. ImJustHereToWatch


    15 ימים לפני


  60. It’s a Friendly truck!

    It’s a Friendly truck!

    15 ימים לפני

    I swear this dude could extend humanity by hundreds of years

  61. KL P

    KL P

    16 ימים לפני

    Space trebuchets.....amazing.

  62. Mopman


    16 ימים לפני

    So if it’s a good idea and it’s possible, why aren’t we doing it?

  63. Oliver Jennings

    Oliver Jennings

    16 ימים לפני

    guys lets do this!!!

  64. Phineas Flynn

    Phineas Flynn

    17 ימים לפני

    Hey Ferb... I know what we're gonna do today!

  65. Victor Mera

    Victor Mera

    17 ימים לפני

    Seeing such ideas wonder why some people are going backwards with flat earthers, fanatical religious people and political or social woke people

  66. Connolly Alon

    Connolly Alon

    17 ימים לפני

    The hard decade endosonographically attract because limit pharmacokinetically frame forenenst a worried trumpet. noisy, adjoining crate

  67. God of the Eternal light.

    God of the Eternal light.

    17 ימים לפני

    The earth spins meaning you would need a good orbit to be able to make use of it and sling shotting ships would most likely result in mistakes and miscalculations and such ships would need to be rescued unless having enough fuel to reach the earth or a mars colony.

  68. rbxless


    17 ימים לפני

    i like anything that goes "yeet"

  69. JayJay Aviation

    JayJay Aviation

    17 ימים לפני

    Or you could use a starship

  70. shannon heraty

    shannon heraty

    17 ימים לפני

    Im waiting for the the but we cant(insert wprds)..........

  71. regular_gamer16


    18 ימים לפני

    "big tin can filled with rocket fuel" rockets in a nutshell

  72. Redlink


    18 ימים לפני

    Bigger rockets

  73. kipper bag

    kipper bag

    18 ימים לפני


  74. Lucifer isgay

    Lucifer isgay

    18 ימים לפני

    The tart stomach bodily explode because face complimentarily matter apropos a cheerful whale. lavish, foolish paste

  75. UngusBungusFilms


    18 ימים לפני

    Imagine asking your family to take a resort vacation to mars

  76. Hakim Tahir

    Hakim Tahir

    18 ימים לפני

    This is like how to abuse physics engine

  77. Sarah Newbury

    Sarah Newbury

    19 ימים לפני

    Why's there an adorable pug at the end

  78. impostor


    19 ימים לפני

    Aliens: Hahaha they only use that 🤣 😂 😆

  79. Dj Boom

    Dj Boom

    19 ימים לפני

    But the g's

  80. Loài Hoa Bất tử

    Loài Hoa Bất tử

    20 ימים לפני

    Ở đây không có người việt hả m.n

  81. Dan Welsh

    Dan Welsh

    20 ימים לפני

    Seems like a decent theory

  82. Zarith Zainol

    Zarith Zainol

    20 ימים לפני

    Where the heck is Nasa bro show them this

  83. Jack 3G

    Jack 3G

    20 ימים לפני

    5:01 I see what you did there. (502 is a 'Bad Gateway' error)

  84. Creeper Deepa

    Creeper Deepa

    20 ימים לפני

    Aliens after hearing us that we can do that: WHAT THE NO! NOT FAIR WHAT THE HECK U FOOLS WHY WHY??!?!

  85. Yongho Kim

    Yongho Kim

    20 ימים לפני

    Wait, was that a dog barking at 8:10?

  86. Rajiv A.R

    Rajiv A.R

    20 ימים לפני

    nasa should learn from you guys

  87. Fundy It’s

    Fundy It’s

    21 יום לפני

    Elon musk: **Making rockets that cost a billion dollars** So we need to do this and this Kurzgesagt: Why don’t we make space hooks? Elon musk: **Looks at other people taking notes** What do we have to lose? Kurzgesagt: Less money Elon musk: **Looks at notes** So what do we need to do?

  88. hedgehog3180


    21 יום לפני

    A scramjet engine would be able to reach these speeds so we might not even need a rocket ship, however they don't exist yet. But it would definitely be possible to use a ramjet combined with a mass driver to seriously cut down on the weight of the rocket ship, if we can accelerate up to mach 5 with a ramjet then we don't need to carry the oxygen for all of that. The only problem would be that we'd have to carry two engine systems but we could perhaps just make the ramjet compartment a detachable booster plane which after the rockets take over would detach and land back at the spaceport. We already have plane launched rockets so this isn't really all that far out.

  89. ELYTZ


    21 יום לפני

    That’s good and all but why aren’t we doing this , you’ve made it sounds so good , I’m angry no country’s attempted this !

  90. Alvin Larsson

    Alvin Larsson

    21 יום לפני

    Why hasent anybody done this in kerbal space program?

  91. TP 2 0

    TP 2 0

    21 יום לפני

    If this happens mars needs to change to mercury as it’s name

  92. Ryan Kearney

    Ryan Kearney

    21 יום לפני

    0:37 Video: is there a way to get to space with less fuel and more payload Me: HAAA! Looks like a dick!

  93. julia potato

    julia potato

    21 יום לפני


  94. Akiku Hana

    Akiku Hana

    22 ימים לפני

    Let Kareem Abdul-Jabbar handle it. He is experienced in "skyhooks". Sorry, I had to

  95. Spacemonkeymojo


    22 ימים לפני

    I'm going to be so dead by the time this comes around.

  96. Mathys Lacombe

    Mathys Lacombe

    22 ימים לפני

    A Skyhook sounds like a Zelda item

  97. Stuff Simplified

    Stuff Simplified

    22 ימים לפני

    Great, but now but do you know long and thick that rope is? It’s going to take years to make!

  98. Eisen fell

    Eisen fell

    22 ימים לפני

    why are we not funding this....

  99. John Dawson

    John Dawson

    22 ימים לפני

    NASA need to right this down

  100. B Emm

    B Emm

    22 ימים לפני

    At the top? This is jibberish.