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Black Holes Explained - From Birth to Death

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  • Publicado em 14 Dez 2015
  • Black holes. Lets talk about them.
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Comentários • 16 606

  • Kurzgesagt – In a Nutshell
    Kurzgesagt – In a Nutshell  3 anos atrás +2158

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  • Chase Toyama
    Chase Toyama Anos atrás +1180

    "Nothing much would happen to Earth, except that we would freeze to death." - Kurzgesagt
    I think that's a pretty big change, thank you very much

    • christopher harvey
      christopher harvey 21 dia atrás

      I guess what they mean is that from the point of view of what the black hole is capable of freezing death is quite tame and unrelated as it is merely the absence of the sun and nothing do with the black hole directly.

    • Josef Schellekens
      Josef Schellekens 3 meses atrás

      for your information, in the eyes of the universe, we are a small and insignificant species. The eradication of stars happens at rate of about 275 million stars per day. Would you still call the death of all life on earth significant?

    • Coto.
      Coto. 8 meses atrás

      So basically all scientists have to do is figure out 1 divided by 0. Seems simple but is actually a REALLY EXTREMELY HARD task with our current mathematics

    • Coto.
      Coto. 8 meses atrás

      1 divided by 0 in hp google chromebook = black hole, basically. Doing it in apple iPhone calculator spits back ERROR

  • Kitaro's Anxious
    Kitaro's Anxious Anos atrás +1124

    In a nutshell: "To escape a black hole you need to be faster than light."
    Me: *puts thruster on flashlight*

    • W.D. Gaster
      W.D. Gaster 11 dias atrás

      I bet half of the people to see this comment found it funny and the other half just cringed. I was both.

    • Twasin Junaed
      Twasin Junaed 4 meses atrás

      GENIUS!!!

    • Yu Me
      Yu Me 6 meses atrás

      @TrES-2b You're slow lol

    • Noor Sarkis
      Noor Sarkis 8 meses atrás

      @SALAM JIHAD lmao

  • Scero Ye
    Scero Ye Anos atrás +384

    theoretically, since our brains consists of electrical signals moving between neurons, wouldn't the extreme gravity inside of a black hole completely mess up this movement pattern of electrical signals, effectively rendering us unconscious?

    • roadArt
      roadArt Mês atrás

      The reason we exist is largely due to our distance to the nearest black hole.. otherwise our reality would become inverted and we would only perceive our non-existence

    • Václav Mašat
      Václav Mašat Mês atrás

      @Vicioussnake Our star is too small (= have too little mass) to do become a black hole so it never happens, dont worry :D

    • Vicioussnake
      Vicioussnake Mês atrás

      @Václav Mašat man i hate it when our sun turns into a black hole and ruins the stability of my atoms

    • Banana gamer
      Banana gamer 4 meses atrás +3

      Okayy, einstein right here.

  • BuVi Kristan
    BuVi Kristan Anos atrás +627

    2:28 a moment of silence for the bird that sacrifices it's life to enter the black hole...

  • Sandi Knows
    Sandi Knows Anos atrás +39

    Amazing how time is absolutely irrelevant in space and how truly short we live in the grand scheme of things. Breathtaking

  • Cyber Guy
    Cyber Guy 3 anos atrás +3315

    When I was a kid, I was deathly afraid of black holes.
    I still am now.

    • mahinaxlove
      mahinaxlove Mês atrás

      Same

    • Samuel Bloom
      Samuel Bloom 2 meses atrás

      @Aleph Null have you ever seen the scientific art of that sh!t, there huge! and some look like galaxys with a whole ring and every thing

    • Stolearov Igor
      Stolearov Igor 2 meses atrás

      @cjuare123 I just can't believe that I was so naive just couple years ago to take all this cartoons as a reality as you are doing now.

    • cjuare123
      cjuare123 2 meses atrás

      They are very interesting. I sometimes wonder if that’s how solve to riddle of traveling through space. What if at the other side is another galaxy. Pretty interesting

    • Jodi Denlinger
      Jodi Denlinger 3 meses atrás

      Omg you know me

  • moto theroad
    moto theroad Anos atrás +2

    I would like to offer a thought different from this video to some extent. The collapse of a start with such great energy that it develops a black hole is not really a hole but a rotating divergent tunnel that leads to a singularity. Mass of the universe gets sucked in due to the extreme gravity from the rotation of the black tunnel and the high density mass swirling inside moving along this convergent tunnel held in by the shear forces on the walls due to the rotational speeds. Anything sucked in we know has at least the speed of light sucking it in and hence high translational speeds see mass moving down the tunnel. At some point is the singularity which one could work out geometrically based on diameter of the hole and rotational speed and the energy by which the collapse of the hole was formed. Eventually enough mass contributes to the singularity that a great explosion would happen... the density would be billions of tons just in a teaspoon... this again is a collapse explosion. Due to it translating even as a singularity the explosion would be inflationary/translation and dimensionally somewhat flat. This would then explain our on Big Bang and why we see our universe as flat and with inflation. So yes there was a universe before us with parts of it sucking into a black hole that created a singularity that started our universe. The mass being sucked in has a queuing affect as it travels until it compresses due to the high energy and eventually into this singularity point. An analogy to this would be like passengers on an airplane egressing in an emergency for the exit door. You see the queuing affect until it almost looks like just a lump of humans versus individuals trying to get for the door. The queuing of the convergent black hole tunnel forces this compression leading to this phenomenon. We need to do more work mathematically looking at this type of approach. We spend too much time wondering about events horizon vs what is happening down the tunnel.

  • MANU-TONYO
    MANU-TONYO Anos atrás +3

    I am not in a position to become a Patreon supporter unfortunately. I would like to say that I have enjoyed my journey through your many video's and have enjoyed them all, thank you :) I have many to go through but thank you for giving us all an entertaining and insightful video to align our thoughts and imagery to these barely tethered thoughts and ideas :) Thanks again

  • nicol wolfsinger
    nicol wolfsinger 2 meses atrás +3

    A lot of people were watching a supernova ready to explode, had waited there a long time, but nobody told them the channel wasn't being updated and they missed it. I wonder how many other channels experienced that.

  • Ron Kreike
    Ron Kreike Anos atrás +2

    Q: In the early universe there were larger stars, that lived shorter, and could form supernova’s that created black holes?

  • Artic Bedwars
    Artic Bedwars 2 anos atrás +2164

    Fun fact: A black hole that weighes 1 kilogram is the size of an atom

    • NotDigitial
      NotDigitial 2 dias atrás

      It’s more smaller, a black hole with a mass of a big mountain would not even be bigger than a proton.

    • Tighe Gregg
      Tighe Gregg 6 dias atrás

      That’s worrying

    • Brandon Fremer
      Brandon Fremer 9 dias atrás

      @joemama but that’s just wrong, years ago the Large Hadron Collider was able to create a black hole that lasted a fraction of a fraction of a fraction of a second with an extremely tiny mass that was almost instantly dissolved by Hawking Radiation

    • Something Something
      Something Something 11 dias atrás

      It would be MUCH smaller than that

    • Efficently dude
      Efficently dude 15 dias atrás

      Fax

  • - M e i k o -
    - M e i k o - 8 meses atrás

    I used to be scared of stuff like this because it made me think about existence. Until last summer, when I got into astronomy and I realized there was a bigger question to think about 😟

  • Amelia Warfield
    Amelia Warfield Anos atrás +10

    I'm impressed with the video of black holes. It's very interesting and informative.

  • Nathan Hoggard
    Nathan Hoggard 8 meses atrás +9

    If anyone has any sources for me to read more about the "virtual particles" mentioned around 4:39 I would appreciate them! I'm not even sure what to google but I wanna know more about those.

    • Nathan Hoggard
      Nathan Hoggard 4 meses atrás

      @高若嵩 Haha not yet, one day perhaps!

    • 高若嵩
      高若嵩 4 meses atrás

      @Nathan Hoggard No. It comes from Quantum Field Theory.
      If you want to go deeper than "particles are created and annihlated constantly," well... hmm. do you happen to have a math degree, and preferably, a doctorate in analysis and differential geometry?

    • Nathan Hoggard
      Nathan Hoggard 6 meses atrás

      @EURICO ALONSO PIZA Ah my understanding was that the virtual particles exist everywhere, independent of a black hole and that "Hawking Radiation" was the name of the phenomenon of black holes losing energy through these particles. Do you know if the theory behind the existence of the virtual particles comes from the concept of Hawking Radiation?

    • EURICO ALONSO PIZA
      EURICO ALONSO PIZA 6 meses atrás

      @Nathan Hoggard The virtual particles are known as "Hawking radiation". As the name suggests, it is a theory proposed by Stephen Hawking.

    • Nathan Hoggard
      Nathan Hoggard 7 meses atrás

      @Arcenal I couldn't find that one, could you post a link to it?

  • Notmitrius
    Notmitrius 10 meses atrás +2

    I've seen in more than one place that you could theoretically survive crossing the event horizon of a sufficiently large mass, but I'm not sure that's true. Time dilation reaches an asymptote around event horizons if I remember correctly. In other words, any matter that reaches an event horizon experiences no time passed relative to anything outside the horizon. That means if a person were to fall into a black hole, whatever part touches the horizon first won't finish crossing it by the time the rest catches up. Therefore, such a person would be flattened against the horizon before crossing, an event I'm reasonably confident would kill you. If there's something wrong with my reasoning, please let me know.

  • CdeCiencia
    CdeCiencia 6 anos atrás +4804

    If at the end of your life you could be sent into a black hole and fall into it, would you do it? Speaking about a supermassive black hole that would allow you to "see what's inside" without dying... this is a question that always makes me doubt, because imagine you survive and reach the singularity alive. Once you are there, perhaps there is no time. An eternity inside a black hole, but having satisfied your curiosity, knowing what's inside...

    • Mayson Groover
      Mayson Groover 2 meses atrás

      Once you entered, time would seem to speed up for you, making your time left seem to be shorter and shorter.

    • Julian Manrique
      Julian Manrique 2 meses atrás

      If it is a supermassive black, then you could stay alive for a little longer, but you definitely wouldn't be able to reach the singularity alive, you would still get spaghettified since every direction would take you towards the singularity and given that space time is infinitely curved here, the difference between your head and feet's gravitational pull would be enormous. It is said that the singularity marks the end of space and time, so space could literally stop running, but that's why our best theory of space and time (general relativity) doesn't work here. A singularity might not even exist. What we need is a unified theory, a theory that joins general relativity and quantum mechanics into a theory of everything, and this could be achieved by understanding quantum gravity.

    • M93
      M93 7 meses atrás +1

      ive been into a blackhole

    • Maeryn 🫶🏾
      Maeryn 🫶🏾 9 meses atrás

      yeah no thanks

  • Rhizaldy Manalo
    Rhizaldy Manalo Anos atrás +2

    6 years later, and after so many viewings of this, I just realized that a Tardis was hidden in the video. Nice work Kurzgesagt!

  • TomtheMagician21
    TomtheMagician21 7 meses atrás

    What if you never cross the event horizon because time is so accelerated when you're there that it evaporates at the same speed you fall?

  • 쇼팽쇼팽
    쇼팽쇼팽 Mês atrás

    It was an interesting video talking about one of the most fascinating phenomena in the universe, the black hole. Visualizing it like this makes my spine a little chilly. Black holes are amazing.

  • Michał Szajkowski
    Michał Szajkowski 7 meses atrás

    If at the event horizon we get an infinite multiplier of the passage of time, wouldn't the blackhole evaporate before we even cross the horizon?

  • tu lam
    tu lam 2 anos atrás +3561

    BRUH.. This vid was made 5 years ago and is still as good as the videos that are made in 2020 :p

    • Sixth Dragonet of destiny
      Sixth Dragonet of destiny 2 meses atrás

      Bruh it’s 2022

    • 3 Besties
      3 Besties 2 meses atrás

      Do you mean six years ago

    • Terra Playz
      Terra Playz 3 meses atrás

      @Satun *6 years now

    • ʙᴇᴛʜᴀɴʏ
      ʙᴇᴛʜᴀɴʏ 3 meses atrás +1

      @Shaff I know right. Most professional videos from 2016 look good.

    • ʙᴇᴛʜᴀɴʏ
      ʙᴇᴛʜᴀɴʏ 3 meses atrás

      So? It was not that long ago. Most professional videos made 6-7 years ago still typically look good, as long as they were made professionally.

  • Servilhano Soberano
    Servilhano Soberano 7 meses atrás

    But is there a point when a massive black hole distorts time so much it makes the time for it to dissolve feel like a second for something inside the event horizon?

  • Umar Abdullah
    Umar Abdullah Anos atrás +1

    I wonder what the inside of a black hole from an observer's perspective would look like.

  • Stefan B
    Stefan B Anos atrás +1

    We could say that dark matter is universal string frecuency (that doesn't make any particle but still has to exist). Gravity is a pressure of dark matter. And so far black hole can be a place with so pressure that strings tore. When a vibration comes to them all mater and information that it has caried dissapears, bucause there is no string that could vibrate and cary it.

  • Pobz
    Pobz 21 dia atrás

    Here's my opinion, there is no mass that passes through an event horizon. Mass can only exist inside and outside of it.
    By definition the force of gravity at the event horizon increases your spatial speed to c. No mass exists at the speed of light. You become photon or some other massless boson. On the other side of the event-horizon, suddenly the opposite happens, if you're a photon and manage to somehow get pushed through, then the farther away from the event horizon that you get, the less force of gravity is applied on you, and suddenly you're a photon able to be in a world with mass again, inside the black hole.
    Are we in a black hole right now? Are black holes portals to other universes?

  • The Zambambo
    The Zambambo Anos atrás +1

    If you think about it, a Black Hole literally does the exact opposite of everything we know about space

  • Ryan Dags
    Ryan Dags Anos atrás +1

    Fun Fact : If you're in the middle of almost colliding black holes, You might end up the time you watched this video.

  • Flourish’ lush Animates

    This was so cool, loved the animation ;)) your videos are getting so good

  • Jago Nexus
    Jago Nexus Anos atrás +1

    Why does it seem like we are more terrified of things that we will never deal with? Black holes are disturbing but none of us will ever die by one.

  • just another account
    just another account Anos atrás

    My mind can't wrap around the concept of a singularity, it's like a paradox. How small can it get? if it has volume, it can get smaller, but if that keeps going, it will have no volume, and how can something with no volume even exist?
    I'm just gonna assume it's a wormhole, it rips the fabric of space open and becomes a doorway to somewhere else

  • Eu29 Lex
    Eu29 Lex 4 meses atrás +1

    Those things are scary, they are the only truly "dark" areas in our entire cosmos ! Basically, let's say you travel with this magical ship, and your advisor is all like "Captain, we are heading towards a nice and dark area of the cosmos, no radiation or matter detected, it's all hollow for some reason"/ Captain : Yeah, let's go ! moments later/Captain : Hmm...weird, I'm feeling .. heavy all of a sudden end of transmission - Last recorded message of the Captain of the Titanic space ship.

  • Joerg Maeckle
    Joerg Maeckle Anos atrás

    Amazing explanation and I love the animation!

  • Magic mushroom
    Magic mushroom 10 meses atrás

    It’s a fair assumption that nothing can go faster than light, however since black holes gravity is stronger than light wouldn’t that mean that at some point after the photon launches directly towards the singularity the speed of the photon exceeds its constant? Since it’s getting pulled by a force stronger than it’s own towards the direction it’s heading. If that’s the case wouldn’t matter also be able to speed up faster than light as it gets closer to the singularity. We also discovered that quantum entanglement is much faster than light though not very useful at the moment it does make you wonder will we one day be able to see all the starts in the sky up close

  • Charles Hampson
    Charles Hampson Anos atrás +802

    Nokia: *Goes near a black hole*
    Black hole: *Now this is an avengers level threat.*

  • P R E
    P R E 5 meses atrás +2

    The BEST way to explain it is this:
    When you throw an object on earth, it gains some distance and falls down to earth. If you throw it hard even harder, it will go to the other side od the earth and sprial in and fall. If you throw it even hard enough, it will go all around the earth and come back to the point you throw it at and will continue to keep in that orbit, and this is called the escape velocity.
    The same happens with light. If you shoot a laser at the surface, it bends a certain number of degrees towards earth because of the gravity bending the space around it. If the gravity is very strong like it is on a star, the light will bend so much it will spiral in to go hit the ground on the other side of it. Now if the gravity is so strong like in a blackhole (which is a collapsed star) the light it will go all the way around the blackhole and meet back to the point it was launched at. This is the blackhole event horizon. Any closer to the blackhole, means the light will spiral in, hence the phrase "even light can't escape it"

  • active85858585
    active85858585 10 meses atrás

    Has a black hole ever devoured a sentient being that can perceive what's happening? I wonder if that would make a difference.

  • Tim Lewis
    Tim Lewis 4 meses atrás

    Isn't the event horizon the zone at which light can no longer get "infinitely" far away from the black hole? Since we normally observe black holes at very long distances, light would have to almost completely escape gravitational influence, but if you were just before the event horizon, would it recede away from you, as light can get to your eyes before falling back to the black hole?

    • 高若嵩
      高若嵩 4 meses atrás

      No. The Event Horizon is the region in which light cannot escape out of. No matter how close you get to it, light can't come out.
      Though, considering that quantum tunneling is a thing, if you put a camera right in front of the Event Horizon for... hmm... 10^34 years, you might actually get a photo.

  • babyrazor
    babyrazor Anos atrás

    Hmmm...I would think that some point during a stars collapse the mass of the event horizon exceeds that of the remaining mass in the stars center. At this point the events gravity is stronger
    pulling the center mass to the horizon leaving in its wake a vacuum of perfect zero which is your "black hole". Nothing can enter a vacuum of perfect zero and anything colliding with it would be instantly destroyed. As for that matter there is no way to know/prove that the vacuum of space is uniform throughout the universe. Take for example the "Expanding Universe Theory", is the universe expanding or is the vacuum of space declining, both cases would produce the exact same observational results. Which also leads us to the "Big Bang Theory". If the universe expanded from a single point then if you are in some point in space the expansion would appear directional, pointing to the point of origin. On the other hand if in fact the vacuum is declining
    THEN it would appear to be expanding in EVERY direction.

  • thenxrmal
    thenxrmal 2 anos atrás +240

    50% knowledge
    40% Animation
    10% Birds.

  • Justin Coates
    Justin Coates Anos atrás

    A thoughtful look at black holes.
    This might be a short article. I'd like to discuss what happens when a black hole forms. When it happens an isolated region of space is created. Entirely cut off from this universe. A bubble outside the universe connected to our universe by only a point. A point we call a singularity.
    First thing first, a point had no dimension. So in order for anything to cross into the interior of the black hole, that thing would need to have been reduced to a mass of zero volume, and become a string of points with no dimension. If this is true nothing enters a black hole except a string of points. Points that have no measurable anything. So clearly a black hole can't destroy matter in this way, by taking away an object's dimensions. Everything getting too close would be reduced to nothingness. Leaving nothing to enter the black hole.
    Rule 1…. Nothing can enter a black hole
    Secondly, as an object approaches the event horizon of a black hole that object is accelerated to the speed of light at the event horizon. A few things could happen.
    The object exceeds the speed of light and crosses the event horizon. But wait relativity says to do that you need an infinite mass, so , were any object to attain the speed of light would instantly fill the universe completely, 100 percent with a homogenous mass. So clearly this can't happen. Nothing but light can travel at the speed of light. Right.
    There is also the problem of time slowing down almost to zero near the speed of light and time is equal to zero at the speed of light. Therefore it stands to reason that if an object were going the speed of light time would stop at the event horizon. No more events can occur when time is equal to zero. I.e. you can't go any further and enter the black hole because by definition that would be an event. Which is no longer allowed because time has now stopped. Therefore nothing can ever cross the event horizon and all matter and information trapped by the black hole is at the horizon. Compacted as if pushed against a wall. The wall called the event horizon. As more and more matter is squeezed against the horizon it gets hot.
    Very very hot. So hot that jets of radiation spew from the poles in both directions.
    In conclusion, nothing can enter a black hole. By definition almost, the event horizon. Should more aptly be named the No Event Horizon. For there all time stops. And nothing can ever cross, in, or out. Because 4 dimensional things… cannot become zero dimensional points.

  • medexamtoolsdotcom
    medexamtoolsdotcom Anos atrás

    This video made one crucial mistake, which was, claiming that you would see the entire future of the universe when you fall in. You wouldn't. This is a common myth. It's based around the fact that gravitational blueshifting/time dilation becomes infinite at the event horizon. The problem is, you're also subject to regular doppler redshifting from your motion as you fall in, and you're falling away from everything at the speed of light at that point, and the 2 effects cancel each other out.

  • Muntazar Salman
    Muntazar Salman Anos atrás

    Thank you for making useful videos ❤️

  • sasuke on roll
    sasuke on roll Anos atrás

    I have a question, if I begin to get attracted towards a black hole, and if Hawking radiation is happening, with the force of the escaping particles, would I get away from the black hole or get stretched like spaghetti?Is there a possibility to survive?

  • Jadyn Baxter
    Jadyn Baxter 2 anos atrás +422

    I like how calm you were when you're literally talking about death

    • Avinashh💋💋
      Avinashh💋💋 4 meses atrás +1

      @LunarOmega type 1 literally

    • Sam Sizer
      Sam Sizer 4 meses atrás

      Literally

    • MrBoca
      MrBoca 5 meses atrás

      @LunarOmega type 1 literally

    • Bronbron
      Bronbron Anos atrás +12

      I lost brain calls reading this comment section.

    • LunarOmega type 1
      LunarOmega type 1 Anos atrás

      @•Super Loves Cakes• Don't reply to what?

  • Philtography - Cotswold Wedding Photographer

    Bearing in mind "gravity’s relative weakness simply by using an ordinary bar magnet to pick up paper clips from a desk. Battling the gravitational pull of all of Earth, the tiny magnet wins! In fact, gravity is a staggering 10 40 times weaker than electromagnetism". I have often wondered if you had 2 black holes made purely of electrons (so both as negatively charged as possible), would it ever be possible for them to merge or would the repulsive forces be far stronger than the gravitational forces?
    As a follow on to this question, if you had a highly charged super-massive black hole and your space ship crossed the event horizon could you leave the black hole simply by generating a strong enough repulsive force (the same magnetic charge as the black hole) because after all magnetism is so much stronger than gravity?

    • 高若嵩
      高若嵩 4 meses atrás +1

      Theoretically, yes, the repulsion will be enough. But repulsion will be so strong that gravity never actually collapses the material in the first place necessary to create the black hole, hence why black holes formed out of electrons do not exist.
      However, black holes do have a bit of charge usually. It is insignificant compared to its total mass, but that tiny imbalance does exist.

  • julio ogaldez
    julio ogaldez Anos atrás

    What if it was possible to understand the singularity caused by a black hole event and utilize the same causes to travel at highly increased speeds but with a bigger threshold allowing for the movement of ships but also ramping the speed down to a a controlled anomaly or say a “warp” to a specific point based on the equation of light year/event horizon (Ly over EV)

  • peanut gamer719
    peanut gamer719 Anos atrás +1

    But wait! what if you put a really tiny black hole in a really big particle accelerator?

  • Andrew Garber
    Andrew Garber 2 meses atrás

    What I don't get about the singularity is that if it is infinitely massive, why isn't it the size of the universe. If we can accurately guesstimate the mass of the universe, why hasn't the entire universe been consumed by one?

  • Alexandros Semertzidis
    Alexandros Semertzidis 10 meses atrás

    Why didn't black holes spontaneously form at the first time-steps ("planck" time) and immediately fill all the universe,as it was expanding?
    Are they not able to be formed under any mass/energy circumstance?
    Even if the inflation of the space itself was faster than the rate of black-hole-ification(so it got big before black holes could "eat" the whole universe), in the early universe where everything was really close, should result in black holes with big % of the entire universe's mass.

  • Yuman
    Yuman Anos atrás

    Have any scientist experimented any object on the black hole yet : actually black hole prevents the thing if it goes slower than light time? Whether we are going into the wrong way to learn and know about mysterious things of the galaxy by using those propounded theories still studied ?

  • Maximilian Schäfer
    Maximilian Schäfer Anos atrás +3

    I have a question. I heard that photons are changed in their path when they go close to a blackhole so sometimes scientist can observe what is behind a blackhole. But should this not be impossible as they have zero mass and then W = m × g doesn't work so their can't be a force changing the velocity of the photon due to gravity. Or is E = m c² rearranged for mass and inserted into the equation for weight which might be a solution which came to my mind.

    • 高若嵩
      高若嵩 4 meses atrás

      No, the mass of the photo is still 0. The full equation Einstein came up with is E^2=m^2c^4+p^2c^2, where p is momentum. The photon follows the rule E^2=p^2c^2, or E=pc, because m=0.
      In relativity, objects travel along world-lines in 4D spacetime. Gravity warps 4D spacetime, so the null vectors along which time travel are also warped.
      Mass was never a part of the equation in the first place, just as it isn't for you. If your mass doubled, gravitational acceleration is still the same for you. This is called the "Equivalence Principle:" inertial mass, the mass that makes you resist acceleration, and gravitational mass, the mass that generates/receives gravity, is the same, hence they always cancel out in all cases whatsoever.

  • Václav Mašat
    Václav Mašat 6 meses atrás +4

    This raised some interesting questions while answering none for me :D
    1) What causes supernova explosion? Not fussion, obviously, so what fission of heavy elements (like nuke?)
    2) How can visible object become invisible ones? Is escape velocity determined by density of the object? I always though weight of the object determines its escape velocity but it seems density (or the distance to center of mass) playes a role too... since there is no other explanation... or?

    • Václav Mašat
      Václav Mašat 6 meses atrás

      ​@Vezoth Escape velocity is determined by mass of f.e. star BUT also its "density" (it is actually distance from center of mass).
      This is why visible star can turn into "invisible" black holes. Escape velocity on star is lower than speed of light, that is why we can see them. But compressed black holes are so small that it allows "things" to get very close. This is what was confusing me - how can visible object become invisible one (due to escape velocity being higher than speed of light) with no additional mass. Then i realized escape velocity is based not only on mass of the object you try to escape from, but also your distance to the centre of mass.

    • Vezoth
      Vezoth 6 meses atrás

      Massive stars are held together by gravity and nuclear fusion. Nuclear fusion provides a force that counteracts gravity, which tries to compress the star together. Once a super massive star runs out of fuel for fusion, the force created by it ceased and the star collapses due to gravity. This is known as a gravitational collapse, and it will cause some of the matter of the star to travel outwards at high speeds. The remaining core will either form a black hole or a neutron star depending on the original mass of the star.
      I'll assume you're asking about how we can't see very faraway stars with visible light. Part of that is thanks to the redshift effect, which is caused by the expansion of the universe. In principle it's the same effect as an ambulance driving past you. When it's approaching you, the sirens are at a higher pitch. When it went past you, the sirens are at a lower pitch. The lower pitch effect also applies to the light from stars, which make them seem more red. The whole spectrum of light they send is shifted more and more towards infrared part of the electromagnetic spectrum as the distance from the star increases, because the space between us is expanding. Expanding space makes longer wavelengths, and so it looks redder until finally it just appears disappears from the visible light spectrum.
      Escape velocity is determined by mass. Density has nothing to do with it. Assuming there's a rocket that transport 1000 kilograms of water to space, there's no reason why it wouldn't be able to a tungsten cube weighing the same amount. Density is just mass per volume.

  • Gargantua
    Gargantua 6 anos atrás +14

    We know how black holes are formed, but what about Super massive black holes? No star we have observed through history have even come close to the mass of the largest SMBH we know of.

    • WatsonDragon
      WatsonDragon 6 anos atrás

      We don't exactly know there's a theory that states that black holes can collided with each-other witch combines to create a supermassive black hole. Black hole can also consume other objects witch can progressively lead to a larger black hole. But keep in mind these are only theories no one has actually been up close and personal or even see a black hole with there own eyes all we can see is the radiation omitted by the black hole

    • Scott Pantera
      Scott Pantera 6 anos atrás

      +Kusefise they started as regular black holes, and over time as they consume more and more matter, they get more massive. the most massive ones attract stars that orbit them and this is typically how galaxies are formed.

    • nacho73
      nacho73 6 anos atrás

      +Kusefise They were probably created (at least some of them) at the earlier stages of the universe and emerged from the ripples and irregularities of the space time fabric.

    • Mjan Mjan
      Mjan Mjan 6 anos atrás

      Pp

    • T C
      T C 6 anos atrás +1

      +DigGil3 I'm not sure if someone has already answered this question yet but when the universe was in it's early days there we're millions of black holes (Billions, trillions???) and sometimes one black hole would be too close to another black hole and just by that one gets swallowed and becomes super massive over billions of years of that happening.

  • tuxedotservo
    tuxedotservo 11 meses atrás

    Great video, but what has been learned in the 5 years since it came out...
    (waves at the ultramassive black hole, TON-618)
    Ah, science... when today's "look what we know - it's awesome!" is tomorrow's "remember when we used to think...?" - which is what makes it so great.

  • sanjuansteve
    sanjuansteve 7 meses atrás

    Where would the boiling bubbles come out and escape from a large, spinning sphere of water floating in zero gravity with the heat source at its core and that was large enough to have its own gravity, and why?
    This is how I imagine Hawking radiation.

  • Mark Dovydovich
    Mark Dovydovich Anos atrás +4

    I was just wondering... I doubt that Kurzgesagt will see my comment, but 1:34 Kurzgesagt said that anything trying to escape the event horizon must be travelling faster than the speed of light. But can't we safely say that black holes are inescapable since their gravity is agreed to be infinite and therefore the black hole will always be pulling objects in the event horizon towards its center at the highest possible speed? So if we manage to travel faster than the speed of light we basically establish a new maximum velocity at which things can travel and this will mean that the black hole will be pulling us in the middle at that exact speed. So best we can do is travel at the highest possible speed to stay in one place in the black hole (not taking into accountancy that black holes are spinning). And that will be a paradox that the black holes will cause.

  • hydraulic hydra
    hydraulic hydra Anos atrás

    Okay so I get that anti-particles annihilate regular particles so if the anti-particle goes into the black hole it destroys a bit of it and a particle gets out, effectively causing the black hole to give up a bit of mass. But, what happens if the anti particle is on the outside and the regular particle is on the inside? It would seem the odds of each happening are about 50/50 resulting in ~0 net change. Or does the curvature of space caused by a black hole ensure that happens always happens with the anti going in?

    • ManuelOrtizification
      ManuelOrtizification 3 meses atrás +1

      We dont really know, almost all the information we have on black holes in just our best guess 😅
      They kind of break our understanding of physics and matter 😂

  • Yohanes Januarico
    Yohanes Januarico 4 anos atrás +857

    Rest In Peace Stephen Hawking, thank you for all of your discoveries. You will be remembered among the stars and in our heart. Always

    • Uncle Sam
      Uncle Sam 9 meses atrás

      @cheesyspace fax

    • Alan Mawson
      Alan Mawson Anos atrás

      @Majic8ball same that’s Stephen haw-kings second name

    • The Internet Police
      The Internet Police 3 anos atrás

      @DrFruedienslipJr
      1: Stephen didn't think black holes actually leaf somewhere
      2: black holes do, in fact, exist.

  • Krumple Themal
    Krumple Themal Anos atrás

    They might have to rethink the characteristics and physics of black holes after the discovery that a black hole merged with a star and consumed it from the inside causing the star to go nova.
    Why do I say this? How can a black hole slip inside the edge of a star without causing the star itself to sheer? Not only did the star not sheer but the black hole reached the star's core before it caused the nova.

  • scott brady
    scott brady Anos atrás +18

    The more gravity something has the slower time go's (the more time is has), it's called gravitational time dilation. I have a theory that black hole aren't holes, as i believe that all matter that falls into it go's past the event horizon all the way to the center. I believe that people viewing a black hole see everything stop at the event horizon, because to the observer gravitational time dilation at the event horizon is infinite, so matter just appears to stop.

    • 高若嵩
      高若嵩 4 meses atrás

      It's not a belief; this was first calculated in the 1910s I think, and now confirmed by observing the wavelength of light bent by black holes.

    • nico
      nico 8 meses atrás

      I think black holes stop time

    • LuckyKat
      LuckyKat 10 meses atrás +1

      yes the most probable way how they work

  • William Rosenqvist
    William Rosenqvist Anos atrás +1

    wait, so black holes act more like planets, but with an insane gravity?

  • Wasobih
    Wasobih 10 meses atrás

    I'm back and I got one question. Are the event horizons of black holes relatively flat? Or round like a star. 💀 I'm asking because I don't know. I just wonder if it could keep a round shape spinning that fast. And the light should be able to keep outside of the horizon easier at the points where the spin is greater than at the poles.. No? So idk if it gets stretched or if light simply makes it look that way. But it seems they are completely round atleast google says that and idk why

  • Popeyes Pizza
    Popeyes Pizza Anos atrás +66

    Y’all don’t beat around the bush. Keeping it simple, informative, great visual quality, and interesting. I genuinely appreciate it keep it up 👍

  • Levi White
    Levi White Anos atrás

    Would it be more of a possibility to go back in time if you are around the star as an imploded and became a black hole

  • lemonski
    lemonski Anos atrás +1

    so how does the whole seeing the rest of the universe in fast forward thing work? Like how do you see that in the black hole so fast?

  • Alexander Rodriguez
    Alexander Rodriguez Anos atrás +1

    A black hole is like a blind spot. Imagine your eyes and in the back of your eyes you have an optic nerve head, that’s what a black hole is, an optic nerve head. You can see light around it, that light is from the observable universe condensed.

  • han nara
    han nara Anos atrás

    I don’t know for sure but, i admire it and fear it! This video excited me! What’s the key to revealing a secret about blackhole? No one for sure~ I’m getting the sense that blackhole can lead us to taking it to the next level. Because it is huge power! This is pretty sick!

  • Marik Zilberman
    Marik Zilberman 6 anos atrás +60

    A question: Recently I've encountered the 'star inside a star' phenomenon. Due to it's nature, it can go beyond the iron stage... would that mean that it's safe from going supernova?

    • Shoun
      Shoun 5 anos atrás

      Marik Zilberman the fading away is basically the shedding of layers until.it becomes a planetary nebula

    • The celestial ruler
      The celestial ruler 5 anos atrás +1

      Marik Zilberman Irfvn

    • sebbo
      sebbo 5 anos atrás

      Asriel pls

    • bandithøm
      bandithøm 5 anos atrás

      MLG Frisk what a dank frisk

    • h
      h 5 anos atrás +2

      Marik Zilberman no,it would make a bigger supernova.If it does I got credit for HYPERNOVA

  • Skylarae Clarkson
    Skylarae Clarkson 10 meses atrás

    In 9th grade Earth Science, we very briefly learned about black holes, the life cycle of a sun, etc, but we never dove too deeply. It was just "event horizon" and "spagettification", and the doom of our sun billions of years in the future.
    I wish I learned about the intensity of black holes in that class, when I was 15. Learning about it now, it's so scary that it's beautiful to me. I'd hear phrases like "They have a black hole for a stomach," or "Our house is a black hole - once something enters, it's gone forever." But I've never known JUST how fucked these things are, and they're REAL. They're OUT THERE.
    If we had been shown these videos back in 9th grade, I'd see the universe so differently than I did until I hit about 20 years old.
    TL;DR: I wish I were taught how crazy black holes are in school. They're scary but they're real, and that fact can really change your perspective on life

  • Chris Kern
    Chris Kern Anos atrás

    Though I am a devout Catholic, I find this channel so informative and cool. Keep up the good work :)

  • Merk Ur Real - K Official

    Just sharing an idea. What if what we call black hole was in fact a micro neutron star compressed at such a point that we cannot see it from earth 🤔

  • Rex Thrasher
    Rex Thrasher 11 meses atrás

    I have a theory: inside each Black hole is an expanding universe. In fact we are inside a Black hole as well, the matter and energy is constantly regurgitated and possibly the laws of physics work differently inside each Black hole. This is my theory, it is mine and I made it, so it belongs to me.😁

  • EeveelutionTrainerIsaiah 👻🎃

    How it all started:
    Star: *"I have a rumbly in my tummy"*

    • Uncle Sam
      Uncle Sam 9 meses atrás

      @Marcel Sissons r/wooooosh

    • ZeroSlash
      ZeroSlash 10 meses atrás

      @Repent or you will likewise perish. ?

    • ZeroSlash
      ZeroSlash 10 meses atrás

      @Marcel Sissons r/whoooooosh

    • Anmol Maharaj
      Anmol Maharaj 10 meses atrás +2

      Also star: *explodes*

  • zen
    zen 7 meses atrás

    “But we think it could be one of two things:”
    “1. Quick death and 2. Very quick death”
    *so* *basically,* *both* *options* *lead* *to* *death*

  • Jefferson Moreira
    Jefferson Moreira Anos atrás +1

    I feel kinda sorry for all this sacrificial birds, lol! Love this channel.

  • Omar JIBAR
    Omar JIBAR 3 meses atrás

    What tool are you using for animations 🤔 they're so cool.

  • The Fattest Hagrid
    The Fattest Hagrid 8 meses atrás

    I always imagined black holes as the dwarves of the incomprehensible next bigger size chart.
    Like microbes will never realize that we are there.

  • Flumpy
    Flumpy 2 anos atrás +1972

    Scientist 1: how should we name this Black Hole
    Scientist 2: I have an idea
    *Slams on keyboard*
    Scientist 1: give this man a raise

  • NotMyRealName
    NotMyRealName Anos atrás

    If a black hole is infinitely dense, then how do we know the mass of them?

  • Varun Entertainment Networks

    How does the blackhole lose energy due to hawking radiation? Will the particle escaping carry the energy?

  • TheOnlyLeg
    TheOnlyLeg 11 meses atrás

    For those curious the mathematical way to explain black holes is shown in the equation for escape velocity of any object or particle (V=-GM/r) M is large and r is small therefore escape velocity is a number higher than the speed of light, moreover anything travelling slower than or at the speed of light (including light) does not have enough speed to escape the gravitational forces acting upon them.

  • Thomas Blomkvist
    Thomas Blomkvist Anos atrás

    Can someone explain to me how something thats moving away from you faster than you can appear to freeze?

  • YT DemonGaming
    YT DemonGaming 2 anos atrás +2300

    me: *throws a Nokia phone in black hole*
    black hole: *blows up*

  • Jm56Z
    Jm56Z Anos atrás +2

    Technically, we can escape from below the event horizon.
    The event horizon is the radius at which the escape velocity (A.K.A. the orbital speed at which an object will never come back to the object) is the speed of light (c = 300000 km/s). So if your spaceship has an engine powerful enough, you could put yourself on a suborbital trajectory which gets above the event horizon. From there, you can propel yourself above escape velocity and go back home. You could also be in a stable orbit below the event horizon, since the circular orbit velocity is slightly lower than the escape velocity.

    • 高若嵩
      高若嵩 4 meses atrás

      @Jm56Z There is no such thing as circular in the event horizon. Space and time become so warped that the timelike and spacelike vectors of spacetime swap directions, and all space dimensions become the one-directional time dimension. You will not be able to orbit in a circular fashion, because circles literally do not exist.
      The only space dimension will become inwards, so the faster you propel yourself, the faster you end up in the black hole.
      To see this, consider the standard Schwarzschild metric in the case r

    • Jm56Z
      Jm56Z 8 meses atrás

      @Lloyd G Orbital mechanics still work under the event horizon, albeit relativistically. If you fire your engines prograde while in a circular orbit, you're going to increase your apoapsis, eventually outside the black hole. Although, the relativistic effects will cause you to reach outside literally after the end of times.

    • Lloyd G
      Lloyd G 8 meses atrás

      But if you are past the event horizon, there is nothing to push against with your engine's boosters, even if you angle at an orbital approach. The black hole would suck in your energy far past the speed of light... which is faster than any physical engine can muster...light is only good for data... not physical power.

    • Origin Weirdo
      Origin Weirdo 11 meses atrás

      I'm too dumb to understand but great job

    • ak 47
      ak 47 11 meses atrás

      you are a genuis

  • Geo Kou
    Geo Kou 9 meses atrás

    Idea: you don’t die when you enter a supermassive black hole. Time goes so fast that the moment you touch the event horizon it evaporates and the huge energy explosion kills you.

  • Gordon Durr
    Gordon Durr Anos atrás +1

    I will explain a black hole and how it's made if anyone is interested. It's not a singularity at all. It's a mass glob of super heavy elements, which is undiscovered elements. Off the charts of our known periodic table of elements. Black holes are made of super heavy, very magnetic elements. And the black hole is a incomprehensively, super powerful, spinning magnet.

  • Jason wolf
    Jason wolf Anos atrás

    Am I the only one who can't wrap my head around the fact that time passes differently. Like I don't get it. So theoretically if a human was there, would we hit old age almost immediately? Or stay the same age while everything outside ages? How much faster is it? Why is it faster? I need a while subject on this

    • Neon-Z12
      Neon-Z12 Anos atrás

      Einstein's theory of relativity
      There are BRclip videos on it

  • Omar Moustafa
    Omar Moustafa 3 anos atrás +418

    "If we changed the Sun with an equal massive Black Hole, nothing much is gonna happen, except The Earth will freeze to death."
    What a relief 😌

    • aaebs ss b
      aaebs ss b 2 anos atrás

      ExoUG It’s equally massive as the sun so it would be alot smaller, but it would have the same mass and same gravity.

    • 159Fender159
      159Fender159 2 anos atrás +1

      @medexamtoolsdotcom Notice he says "swap out the sun", as in, imagine the sun was instantly removed and a black hole with the exact same mass put in its place. Not that the sun collapses and turns into a black hole.

    • ExoUG
      ExoUG 2 anos atrás +3

      @Ax O. I think i missed a bit when he said exact same mass.

    • Ax
      Ax 2 anos atrás +6

      ExoUG The black hole would have same the gravity as the sun, because it would the same mass. Two objects with the same mass have the exact same gravity.

    • medexamtoolsdotcom
      medexamtoolsdotcom 3 anos atrás +1

      It's also not true. If the sun were to collapse into a black hole, it wouldn't be clean, stuff gets very hot as it falls into black holes and it radiates very brightly, so the outer layers of the sun would be blasted away and 2 massive jets would be shot out and it would definitely blast the Earth into a wad of plasma. Have a nice day.

  • SHIVA KUMAR V
    SHIVA KUMAR V 5 meses atrás

    Can black hole be considered a large atom? As fusion in stars causes heavier atoms?

  • Spicy Pizza 🍕🍕
    Spicy Pizza 🍕🍕 Mês atrás

    1:10 Sir a query?
    U said it feeds as it moves 1/4 the speed of light it feeds much more mass to the core.
    So is it related to e=mc2, as the energy gets converted to mass when travelled near about the speed of light. Or is it necessary that this formula isn't applicable until speed reaches twice the speed of light.
    Please answer very serious doubt for me!!

  • DreShorts
    DreShorts 10 dias atrás

    You: walks into alley. Black hole: “you have two options, a quick death, or a very quick death”. You: “okay time to run at the speed of light”. Einstein: “I’m afraid that’s not possible”.

  • Chaos Sage
    Chaos Sage Anos atrás

    "The universe is finite, it's resources finite, if Life is left unchecked, life will cease to exist" , Damn Thanos was right

  • DrPepper776
    DrPepper776 6 anos atrás +2806

    im pretty sure there is bookshelves inside a blackhole

  • Kind Old Raven
    Kind Old Raven Anos atrás +3

    Nobody knows this yet, but when a black hole evaporates (read: explodes) it actually creates a completely new universe. In a bout a gazillion years from one such explosion, creatures will be calling such an event ''the big bang''.

    • Thirsty Demon
      Thirsty Demon Anos atrás

      What is your proof for this this sounds very pseudoscientific

    • Ryan King of the Monsters
      Ryan King of the Monsters Anos atrás +1

      I have been thinking the same thing, our Universe started from a singularity exploding. We named this the Big Bang, so if another singularity exploded, there would be another Big Bang right? The only problem is whether the singularity that exploded at the start of time is different to the ones within black holes. ???

  • julio ogaldez
    julio ogaldez Anos atrás

    Also wouldn’t it make sense that if the star implodes logic would state that the directional force of that implosion would cause whatever is in the vicinity to move in the explosions direction of force effectively explaining why it is a black hole, simply put a black hole is not a hole but an ongoing grossly powered aftershock of directional force moving all to its end state or the end of its travel.

  • Rip Exotic
    Rip Exotic 4 meses atrás

    Wait, so if we went faster then the speed of light would we be able to see what a black hole truly looks like? Because you said what we see of
    a black hole is just it's event horizon😳

  • Dominic Montgomery
    Dominic Montgomery 10 meses atrás

    You forgot to mention death by fear. Being lost in space by itself is terrifying, but falling into a large black sinkhole lost in space, well, not sure about you but my heart would simply implode

  • Meredith Beer
    Meredith Beer 2 anos atrás +16

    This video was super interesting to watch. I really likes learning about the Hawking Theory and how it slowly shrinks the black hole. It was also super interesting to know how hot a black hole will get before it explodes and disappears. I was really surprised on how big the largest black hole is!

  • StaticBlaster
    StaticBlaster Anos atrás

    Black holes *might* be a telltale sign of extra dimensions because if you think about it gravity is pushing everything down to a point. So where is all that stuff really going. From our perspective, visualizing higher dimensions is impossible because you need an extra orthogonal axis to visualize the higher dimension. So perhaps all that matter is being crushed down to a point in our universe and is ejected through the other orthogonal axes in a much stranger, exotic hyper-dimensional multiversal reality. Just a thought.