1,000km Cable to the Stars - The Skyhook

  • Published on Nov 17, 2019
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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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Comments • 17 482

  • Kurzgesagt – In a Nutshell

    To support Kurzgesagt and learn more about Brilliant, go to www.brilliant.org/nutshell and sign up for free. The first 688 people that go to that link will get 20% off the annual Premium subscription.
    Thanks to our friends from Brilliant for supporting this channel.

    • Glover Productions
      Glover Productions 6 days ago

      Kurzgesagt - In a Nutshell Jesus Christ is the only way to heaven ✝️

    • Angga Habibi
      Angga Habibi 7 days ago

      Subtitle Indonesia please

    • Joacquin Villar
      Joacquin Villar 7 days ago

      @Lukas Kappich yes pls

    • Pedro Vitor Thomazini
      Pedro Vitor Thomazini 7 days ago

      Make a video listing the animals with the strongest bites

    • Lukas Kappich
      Lukas Kappich 7 days ago +1

      Can you make a video, explaining the Higgs Particle / Higgs Field / God Particle?

  • Shusui
    Shusui 2 hours ago

    We borned in very bad time. Whole world discovered, space adventure hasn't began yet. But on the other hand, there are no world words, plagues, burning as withches.

  • Kalem Moore
    Kalem Moore 3 hours ago

    How would you calculate and account for the G forces that the humans traveling in these spacecrafts would experience?

  • George HDS
    George HDS 5 hours ago

    What a awesome idea! I have never thought about that haha.

    N&C MINKING 5 hours ago

    I watched this video thinking 'WOW' and still do.... except for all the space junk in low orbit in earths atmosphere. The information from one of your previous videos states we only have the ability to track some of the items cruising around the plant. How are we to have a Skyhook safely in low orbit? It is such an amazing idea but we may need to start on another moon or plant.

  • Hi Weeds
    Hi Weeds 5 hours ago

    I found this channel trippin on mushrooms and the content is so amazing that I stayed, thank you so much for making easily digestible content, I love learning but it's so difficult without visuals.

  • devin reaves
    devin reaves 6 hours ago

    So like come on humanity what are you waiting for

  • WILS
    WILS 8 hours ago

    The velocity of both sides of the rope will might not be the same because of the effect of earth's atmosphere plus the pull of the earth's gravity.

  • Dervy
    Dervy 9 hours ago

    ah, of course, the *SKY YEET*

  • Amir Elkeys
    Amir Elkeys 10 hours ago

    INDONESIAN please !!

  • Aad 7
    Aad 7 10 hours ago

    Teachers should show teachers to kurzgesagt

  • GaydineRoss YT
    GaydineRoss YT 13 hours ago

    Someone gonna tell the apex devs to watch this??

  • ss greenforred
    ss greenforred 15 hours ago

    Russian subtitles please

  • ss greenforred
    ss greenforred 15 hours ago

    Russian subtitles please

  • ss greenforred
    ss greenforred 15 hours ago

    Russian subtitles please

  • ss greenforred
    ss greenforred 15 hours ago

    Russian subtitles please

  • ss greenforred
    ss greenforred 15 hours ago

    Добавьте русские субтитры

    Teetawat VIHOKPRASERT 20 hours ago +1

    can you do a vid about plants that make there nucleus can make electricity,like literally its called power plants can you make like a electricity plant vid plz : )

  • Chicken with a Gun
    Chicken with a Gun 20 hours ago

    See ya on mah quest to tether control mars

  • Acrimonious Dragon

    IF the burning up problem can be "fixed"... Could the thermal energy from having the tether lower be used to make electrical energy?

  • Sirevix
    Sirevix Day ago

    someone show this video to Elon Musk !!

  • Taco Jordan
    Taco Jordan Day ago

    Hearing about real ways for us to reach the stars makes me weep with joy.

  • Kacper XT
    Kacper XT Day ago

    where are polish subtiles

  • Logan Smith
    Logan Smith Day ago

    Space hookshot

  • Paulo Peccin
    Paulo Peccin Day ago

    What about the acceleration while attached to the tether? Would it be within the rage humans can withstand?

  • Spencer
    Spencer Day ago

    Thank you Kurzgesagt, this video made my day. My optimism for the future has been restored.

  • The Akshay Nair
    The Akshay Nair Day ago

    Elon Musk : I'm going to use reusable rockets and invest my entire disposable wealth into it.
    Kurzgesagt : I'm about to end this man's entire career.

  • L Ol
    L Ol Day ago

    Take my money , make this happen NNNOOWWWWWW

  • Ashwin E
    Ashwin E 2 days ago +1

    I like the optimism in this video

  • CavCave
    CavCave 2 days ago

    But is there oil on Mars to persuade the US to spend in space exploration?

  • Robert Mareczko
    Robert Mareczko 2 days ago

    I've been watching you for several years, but for a year Polish subtitles have been coming with a great delay, fix it

  • Big Fiji
    Big Fiji 2 days ago +5

    Can we all just spam Elon musk’s Twitter to design one of these

  • Linus Halpin
    Linus Halpin 2 days ago


  • LameBrainMcCain
    LameBrainMcCain 2 days ago

    This looks very compelling! But... I'm not convinced it is depicted properly. I *think* the cable must go in and out ... to change the speed of the spacecraft by conserving angular momentum... just as a skater does by moving her arms in and out to increase/decrease rotational speed. So... when launching, the cable must be reeled into the center of the skyhook to increase the rotational velocity, and thus linear velocity of the spacecraft when it is released, so that it can escape the Earth's orbit. And conversely, returning spacecraft must be caught with a reeled in cable... and then reeled out, thus decreasing the linear velocity of the craft so that it can return safely to Earth. N'est ce pas?

  • xl
    xl 2 days ago

    You conveniently forget to talk about the energy needed to descent from the tether at 5:29
    It's not free.

  • xl
    xl 2 days ago

    After Effects is not an animation software. It's for post production.

  • Trust Pax
    Trust Pax 2 days ago

    I have never seen that concept in a movie. But I never read science fiction, so I don t know how usual its placed there. Do someone know movies oor series that use that idea?

  • Ryan Skenandore
    Ryan Skenandore 2 days ago

    im writing a research paper on space exploration and all i need is your videos for sources... amazing and credible stuff i can write about.

  • Gatcha Bish
    Gatcha Bish 2 days ago

    Basically the world doesnt give a shit about making airplanes safe again and would rather fling society into space.. As if we dont need to search the ocean for those lost planes...

  • kodi lau
    kodi lau 2 days ago

    Im using this for my assesment

  • Fire Blade
    Fire Blade 2 days ago +1

    Ok when I’m a quadrillionaire in 50 years from asteroid mining by doing this, I’m going to thank you

  • [ironic name here]
    [ironic name here] 3 days ago

    What about the effect on the pilotes or do G for e not count because of a lack of gravity

  • Sanjid Rahman
    Sanjid Rahman 3 days ago

    But still how can we make send a hundred thousand kilometer long cable perfectly on earth? and even if we are catapulted astronauts would get sick rotating at such a speed...

  • Satan Lucifer
    Satan Lucifer 3 days ago +1

    The big shipyeeter

  • Jitesh Verma
    Jitesh Verma 3 days ago +1

    Did you already pitch this idea to Elon Musk or I am good to go?

  • sempai
    sempai 3 days ago

    If Mars had spices, a random european dude would already found a way to there

  • Hoshigaki Kisame
    Hoshigaki Kisame 3 days ago

    wow very good video

  • qw3rty01
    qw3rty01 3 days ago

    2:49 it would get too hot from air *pressure*, not friction

  • Rockhunterguy
    Rockhunterguy 3 days ago

    Introducing, the ShipYeeter! it, uh, yeets ships into space.

  • ReefleksPlayz
    ReefleksPlayz 3 days ago

    *_Elon Musk wants to know your location_*

  • Bruno Cordeiro
    Bruno Cordeiro 3 days ago

    Legendas em português do Brasil em todos os vídeos, por favor.
    Vocês não tem idéia de como e difícil bons divulgadores de conteúdo científico de qualidade em nosso idioma 😥.
    Exceto claro por alguns divulgadores, mas ainda são poucos.

  • Luq
    Luq 3 days ago

    Sometimes i get sad i'll never be able to see all of this

  • Alex Kumlin
    Alex Kumlin 3 days ago

    tethers are about as risky as being catapulted into the sky 1000km and landing in the spot you wanted. You can do the math for accuracy but do you trust the precision. Not only would you land but you would be refired and hope to land on your next destination for your "interstellar journey". For our tech the flinging would save on fuel but hopefully before we need to go through with building some system like this we find other ways to travel through our solar system

  • Alex Kumlin
    Alex Kumlin 3 days ago

    your animation is wrong on the 4:15 timeline it would hit the tether and push it back up to speed not get caught by the tether and released.

  • psammiad
    psammiad 3 days ago

    Fascinating but many unanswered questions. Could we build a durable cable with current materials? How complex would it be to build and to deploy in orbit? What if it spun out of control and crashed? Are there any other safety risks? What if it got hijacked by people with malicious intent, could it be used as a weapon?

  • Guru
    Guru 3 days ago +1

    So just a space sling shot eh?????...

  • androkles04
    androkles04 3 days ago

    This is really interesting, and has left me wanting to know why it isn't a bigger talking point/closer to a practical solution if it's "that easy" and effective? Would've loved to see the video touch on that.

  • sebastian devosi
    sebastian devosi 3 days ago +4

    imagine missing the tether and now drifting into the emptiness and darkness of the space.
    that would be pretty scary

  • ShouryaG
    ShouryaG 3 days ago

    Great idea

  • Phyzzius
    Phyzzius 3 days ago +1

    It looks like a cool idea, but it's never going to happen. It's an engineering nightmare. First you would have to build the thing in space, using conventional rockets. Then you have to start spinning the thing, making sure you don't hit the literally thousands of satellites flying around earth. Even if you would manage all that, you *still* need a rocket to get your ship to an altitude to hook up with this thing, a maneuver which would be so difficult, I doubt anyone would be willing to try it (mind you, they take days to maneuver and dock a resupply ship to the ISS). But the fact you still need a rocket makes this a useless idea, more than two thirds of the delta-v you need to achieve escape velocity is to get into earth orbit. Why would you build such a complicated thing only to make the last bit of the trip more efficient? That effort is better put into building a refuelling station in orbit, which will also give your rocket more delta-v, but with much more manageable engineering challenges than this idea imho...