What Would Happen if you fell into a Black Hole?

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  • Опубліковано 19 січ 2024
  • Imagine that your on a science mission to study black holes when through no fault of their own, one of the crew ends up outside the ship and being pulled towards the blackhole. With no prospect of rescue how long would our astronaut survive once over the event horizon and what would happen to hem once they disappear from our universe. In this video we look at what might happen, would they even make it to the horizon and if they did how long they might survive once inside.
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    Written, researched and presented by Paul Shillito
    Images and footage : NASA, ESA, Equinox, HDgreenstudio, 10EldarionElessar, SeeYourNeeds
    And a big thanks go to all our Patreons :-)
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  • Наука та технологія

КОМЕНТАРІ • 393

  • @thany3
    @thany3 4 місяці тому +222

    In a nutshell: you get eternal life, but only for a few minutes.

    • @--Snowy--
      @--Snowy-- 4 місяці тому +7

      That's deep bro

    • @ABrit-bt6ce
      @ABrit-bt6ce 4 місяці тому +14

      And at the last moment The Doctor will scoop you up with the open door of the TARDIS and it'll be off home for tea and medals.

    • @rachelblake2350
      @rachelblake2350 4 місяці тому +6

      This is extremely poignant and pithy and I will be using it to describe how black holes work for the rest of my life. Thank you.

    • @rcfp2006
      @rcfp2006 4 місяці тому +4

      ​@@ABrit-bt6ce You mean fish fingers and custard?

    • @patreekotime4578
      @patreekotime4578 4 місяці тому +10

      Even more bizarre.... your body will hang motionless over the blackhole as a kind of eternal monument to human curiosity.

  • @paulhaynes8045
    @paulhaynes8045 4 місяці тому +94

    Hardly understood any of that - but there were no ads, before or during the video, for which you have my eternal gratitude...

    • @stevenkelby2169
      @stevenkelby2169 4 місяці тому +6

      Yeah. A friend told me that, so I watched and have re-subscribed.
      I pay for UA-cam premium and I am Patreon of a hundred + channels so I can avoid ads.
      I won't tolerate ads. But I'm weird!

    • @TheGuruStud
      @TheGuruStud 4 місяці тому

      ​@@stevenkelby2169it's called ublock on desktop and revanced on mobile... paying criminal Google 😂😂😂. Embarrassing.

    • @zka77
      @zka77 4 місяці тому

      AdGuard helps :)

    • @ross-carlson
      @ross-carlson 4 місяці тому +1

      Are you guys not aware of uBlock Origin? I haven't seen an ad on UA-cam in literally years - and even now with UA-cam doing all they can to block ad-blockers uBlock Origin still works perfectly. I've had to update it a few times but other than that it's stellar....
      edit: I realized that sounded awful "ad-like" on it's own, just an avid fan, have no connection to uBlock....

    • @Games_and_Music
      @Games_and_Music 4 місяці тому +3

      Yeah, i automatically skipped to about 3 minutes in and noticed that the advert still hadn't started, since i couldn't see any hints at it in the little preview when mousing over the time bar.
      As normally the ad would appear after the intro theme, but that was also missing, so i just put it back to the start again and was happily surprised by the lack of adverts.
      He's a good man.

  • @mickeyfilmer5551
    @mickeyfilmer5551 4 місяці тому +56

    Even though I have read "A Brief History of Time" more than once-it still makes my brain hurt when I think about these things. Great video Paul- you never disappoint!

    • @santosl.harper4471
      @santosl.harper4471 4 місяці тому

      Compared to Joe Polchinskys book, that was child's play really. What did hurt my brain was the "shwortz child" pronunciation (sorry Paul)

  • @brianmessemer2973
    @brianmessemer2973 4 місяці тому +14

    Romilly: Gargantua's an older spinning black hole. It's what we call a "gentle singularity."
    Cooper: Gentle...
    Romilly: They're hardly gentle, but the tidal gravity is so quick that something crossing the horizon fast might survive. A probe, say...
    Cooper: What happens after it crosses?
    Romilly: After the horizon is a complete mystery. So, what's to say there isn't some way that the probe can glimpse the singularity and relay the quantum data? If he's equipped to transmit every form of energy that can pulse...
    TARS: Just when did this probe become a "he", professor?
    That's damned good science/sci-fi writing. Informative and thought-provoking while also being funny. I really liked how this actor played Romilly, and the voice actors who played TARS and CASE were fantastic.

    • @thelandofnod123
      @thelandofnod123 4 місяці тому +3

      What a great film. KIPP was named for Kip Thorne who consulted on the project.

  • @benediktkohler28
    @benediktkohler28 4 місяці тому +54

    As a german I have to say it is not Schwarzs-Child .... it is Schwarz-Schild, literally Black-Shield, or Black-Sign

    • @pwmiles56
      @pwmiles56 4 місяці тому +10

      Quite right. Supposedly a sign in the Frankfurt ghetto, near to Rothschild (red shield).

    • @loc4725
      @loc4725 4 місяці тому +5

      Sh-varw-sh-il'ed.

    • @1_2_die2
      @1_2_die2 4 місяці тому +11

      That topic gives me shivers every time a English speaking person mentioned Schwarzschild.
      Maybe we need a TV show like Baking Bread for Heisenberg, so the world can learn to speak out correctly.
      They got Einstein correct and don't speak it like Einsteen.
      Reminds me about the movie "Young Frankenstein" (by Mel Brooks), where there is a discussion about how to pronounce the name: Frankenstein or Fronkensteen 🤣 (Eegor or Igor, Frederic or Froderik)

    • @fabrb26
      @fabrb26 4 місяці тому +2

      As a French with my four grand parents carrying a German family name i have to say; Sauerkraut.

    • @loc4725
      @loc4725 4 місяці тому +1

      @@fabrb26 Oh yes, Zau-er-krau-t. 🙂
      Not sure if the Polish version has the same pronunciation though.

  • @marcodebruin5370
    @marcodebruin5370 4 місяці тому +24

    Great video on the effects black hole event horizons, nice clear explanations :)
    I have only one gripe: the pronunciation of Karl Schwarzschild's name. He was german, and his name is a combination of the two words Schwarz (meaning "black", pronounced "shwarts" as you did) and Schild (meaning "shield", pronounced "sheeld", almost identical as its english equivalent "shield"). The actual meaning of his name is in itself a curious coincident given his scientific work on the event horizon of a black hole.

  • @robertmiller9735
    @robertmiller9735 4 місяці тому +9

    I guess "you die when the accretion disk radiation overwhelms your ship's shielding long before you reach the event horizon" isn't as fun.

  • @greasymonkey6379
    @greasymonkey6379 4 місяці тому +18

    Mind officially blown - yet another stellar video, thanks 👍

  • @emcsquare62
    @emcsquare62 4 місяці тому +14

    thanks so much for your research and production of these series. Much appreciated!

  • @Cossack124
    @Cossack124 4 місяці тому +6

    Event Horizon you say? Space time you say?
    *Dr Weir has entered the chat😂

  • @spurgear
    @spurgear 4 місяці тому +18

    "Die." - Lt. Commander Worf

  • @itsemz2634
    @itsemz2634 4 місяці тому +2

    I love how clearly you communicate difficult ideas so that even those with little to no knowledge of science can get an understanding of what's going on. Thanks for making these topics accessible and enjoyable to watch :)

  • @gareththompson2708
    @gareththompson2708 4 місяці тому +7

    The time dihilation leads to some really wonky consequences. It's not just that the entire history of the universe (even the infinite post heat death nothingness) passes the instant you reach the event horizon. But every further moment you experience after you've crossed the event horizon does not corrospond to any point in the timeline of the outside universe. The outside universe no longer exists. You are inside your own little pocket universe.

    • @David-yo5ws
      @David-yo5ws 4 місяці тому

      What does the human in the space suit see as they cross the event horizon? Well, my logic does not agree with what Paul proposes. If you start accelerating faster than the speed of light, then the eyes of our doomed space traveler would see a picture of the universe that would start to freeze (maybe even reverse a little) as they outpace the emitted light arriving at their eyes. So as they get even faster than the speed of light, the picture would just fade away. And if they looked to the side, the light is being curved into the black hole, so that view would fade to black as well. I'm afraid, it's "Lights Out!" The only thing left will be them hearing their own voice saying something in reaction to the experience. Anything ranging from, "Well I never ........" To "Aaaaaaaaaaaaaahhhh!" The next thing will be like that bug that hit's your windshield on the open road. Mercifully, they might have run out of oxygen by then I would think. 🧑🏼‍🚀

    • @NocturneSega
      @NocturneSega 4 місяці тому +2

      I too think you would just be thrown so far ahead in time the black hole would have evaporated at the instant you touched event horizon. As time dilation would be near infinite at that point I suppose

  • @CarMake
    @CarMake 4 місяці тому +15

    Another amazing video Paul! Thank you! From about 9:35 or so (time perceived differently by astronaut/observer) reminded me of my, probably favourite, Futurama episode: The Late Phillip J Fry. It's difficult for a cartoon to make you feel true emotion but that one really has!
    Keep up the great work Paul! Ta

    • @flightmaster999
      @flightmaster999 4 місяці тому +3

      Also in Futurama, in one episode, Bender is lost in space forever. Eventually some small lifeforms begin evolving on him. The they then go to war against each other and so on. That was a pretty interesting episode. The creators of the show (the same that created The Simpsons) really take physics, gravity and a bunch of other fundamental "laws" into consideration in the show, which make it all the more interesting!

  • @JohnComeOnMan
    @JohnComeOnMan 4 місяці тому +43

    This chap seems pretty friendly, but I can't help thinking his night job is as an evil super villain.

    • @m-erko
      @m-erko 4 місяці тому +13

      This channel is part of the recovery program since he got rid of his hollowed-out volcano lair & gave away the hydrofoil superyacht to his henchmen

    • @perniciouspete4986
      @perniciouspete4986 4 місяці тому +6

      Shouldn't stereotype the "follicular challenged." They'll get you.

    • @garrysekelli6776
      @garrysekelli6776 4 місяці тому +4

      Emperor palpatine vibes.

    • @ConvincedIdiot
      @ConvincedIdiot 4 місяці тому

      I'd watch that film.

    • @MrFancyFingers
      @MrFancyFingers 4 місяці тому +1

      The hills have eyes

  • @-TheRealChris
    @-TheRealChris 4 місяці тому +5

    "Tish, pshaw and nonsense! Any old twit can hug the event horizon of a black hole, then loop the loop ’round the spinning singularity at twice the speed of light, then slam the engines into reverse and blast out of an imploding nebula!"

  • @giovanniguaitini7454
    @giovanniguaitini7454 4 місяці тому +1

    I really have to compliment you: among numberless videos about this subject somehow you have managed to synthesize the information in a comprehensive and original way. Some thing that you point out made me say "wow, I never thought abaut it his way!".
    Thumbs up!

  • @stoerenungeheuer543
    @stoerenungeheuer543 4 місяці тому +6

    SCHILD! Means shield but is nowhere near sounding like child. Sorry mate.
    There is even a play button (---> sound file) in the english wikipedia article - check out how it actually sounds.
    However, besides this I enjoy your videos very much.
    Sorry for my bad English, cheers!

    • @stoerenungeheuer543
      @stoerenungeheuer543 4 місяці тому +1

      PS: As schwarz is German for "black", the name Black Shield is very fitting.

    • @chromaticAberration
      @chromaticAberration 4 місяці тому

      @@stoerenungeheuer543 English actually has an immediate cognate, *swart* , which means something like "blackish" or "dark"... So _'Swart shield'_ could be another translation! 😉

    • @chromaticAberration
      @chromaticAberration 4 місяці тому +2

      You're right! It made my ears bleed too! I'm not German, but I do have _some_ knowledge of the language, being a "neighbour" from Denmark 🙂

    • @stoerenungeheuer543
      @stoerenungeheuer543 4 місяці тому +1

      @@chromaticAberration Greetings to Denmark!

  • @GregiiFlieger
    @GregiiFlieger 2 місяці тому

    Paul, your best video…. Ever! A compilation of so many theories, across so many questions of what is beyond what we both know and surmise. Going to watch this video 1000 times. Outstanding and awe inspiring. Congrats!

  • @EricMBlog
    @EricMBlog 4 місяці тому +2

    There is a Stargate SG-1 episode, A Matter of Time, that revolves around the time dilation aspects of a black hole, and what happens to people stuck near one.
    I’m not claiming it’s scientifically accurate, but I think they do a decent job for general popcorn sci-fi from 25 years ago.

  • @michaelrivera6989
    @michaelrivera6989 4 місяці тому

    Always a good video from you. Thank you.

  • @regolith1350
    @regolith1350 4 місяці тому +2

    Current theoretical models indicate that if you fall into a black hole, you get trapped inside a bookshelf.

  • @baxterboy23
    @baxterboy23 4 місяці тому +2

    The best explanation of a black hole I've ever heard.. Loved it. 👍👍

  • @HazelS71
    @HazelS71 4 місяці тому +3

    Another absolute Jaw dropper thank you for all your hard work Paul these videos really make you question the universe and thats what science is all about Curiosity!!!

  • @mpireoutdoors5274
    @mpireoutdoors5274 4 місяці тому +1

    As soon as I hear your voice I'm hooked mate. All the best.

  • @martij30
    @martij30 4 місяці тому

    Amazing video, as always.

  • @steveshoemaker6347
    @steveshoemaker6347 4 місяці тому +1

    MAN THAT IS A LOT TO THINK ABOUT.....Thanks Paul...

  • @knoxduder
    @knoxduder 4 місяці тому

    #300 ! Very nice! Thanks for the excellent content!

  • @michaelskinner896
    @michaelskinner896 4 місяці тому +1

    Just mind-bending stuff really. Great presentation.

  • @hanibachi3719
    @hanibachi3719 4 місяці тому +1

    This was significantly more clear and helpful than other youtube videos

  • @40pike96
    @40pike96 4 місяці тому

    scary stuff. good video.

  • @metallusmelandril7380
    @metallusmelandril7380 4 місяці тому

    Nice watch!

  • @terrylandess6072
    @terrylandess6072 4 місяці тому +4

    Our 5 senses aren't equipped to understand what we've garnered from our technology leaving questions we know can never be answered.

  • @fensoxx
    @fensoxx 4 місяці тому

    I almost didn’t watch this one as I’ve seen it described in so many places. I should have known you’d bring some facts I hadn’t heard. This channel never disappoints.

  • @WalterBurton
    @WalterBurton 4 місяці тому

    I like this experiment. I'm pro-AI for content creators like yourself. After all, editing is as much an art as anything else. Seriously. Thanks. 👍

  • @kevinburt44
    @kevinburt44 4 місяці тому

    I think my brain needs a rest..... Excellent video, what an incredible subject. Makes you wonder what else is in space we know little about.

  • @JH_75
    @JH_75 4 місяці тому +3

    These videos are always brilliant. Ive yet to find an explanation for black holes, spacetime, etc that I can understand with my nuts and bolts brain. I was hoping Paul could help me but in spite of his excellence, I still can't say that I understand.

    • @curiositycloset2359
      @curiositycloset2359 4 місяці тому

      Best explanation i heard was, if you go sideways, you increase time, if you continue falling, you increase distance

    • @mapesdhs597
      @mapesdhs597 4 місяці тому

      If you really, genuinely, fully understood, perhaps you'd vanish in a puff of logic. :D

    • @AussieDaz87
      @AussieDaz87 4 місяці тому +1

      Brian Cox and Veritasium have some great Black Hole explainers

    • @mapesdhs597
      @mapesdhs597 4 місяці тому

      @@AussieDaz87 A friend of mine has an email sig which says, "Black Holes are where God is dividing by zero." :D

  • @schnabeltier516
    @schnabeltier516 4 місяці тому +4

    The usual German pedantic comment: Karl's name is spelled Schwarz-Schild (both parts with the "sh" sound at the beginning, sounds something like Schwarz shield), not Schwarzs-Child :) Anyway, thanks for the great video

    • @David-yo5ws
      @David-yo5ws 4 місяці тому

      It is as amusing to me as the depiction of the English rescue on the beach's of France in the re-make movie. Here was a chance to correct the name of the town Dunkerque after which the battle is historically known as, but no, we still have the English 'bastardised' name. Even the Oxford dictionary says: Dunkirk / a port in northern France. French name Dunkerque.

  • @abxorb
    @abxorb 4 місяці тому +1

    Very clear and interesting video Paul, thanks! 👍
    Just one snall thing: the last part of the German name Schwarzschild (which is "schild") is pronounced like the English "shield", not "child". 😅

  • @NeonNijahn
    @NeonNijahn 4 місяці тому +1

    In Eureka, Edgar Allen Poe predicted black holes and the big bang. Fascinating.

  • @thelittlehooer
    @thelittlehooer 4 місяці тому +1

    10:34 "Alive in their version of reality, but dead to us" That resonates more than it should.

  • @AdamJRichardson
    @AdamJRichardson 4 місяці тому

    Coincidentally I saw a lecture on this exact topic just yesterday on the Royal Institution's YT channel. You did a much better job of explaining it!

  • @timjones6255
    @timjones6255 4 місяці тому +3

    Reminds me of the speculation before the sound barrier was broken

    • @ABrit-bt6ce
      @ABrit-bt6ce 4 місяці тому

      Yep. Can't be done. Hold my beer!

    • @patreekotime4578
      @patreekotime4578 4 місяці тому +2

      Well lets put it this way.... you might survive, but by the time you came back out even the galaxies you know would be long dead.

    • @wally7856
      @wally7856 4 місяці тому

      Anyone who thought the sound barrier couldn't be broken was an idiot. Thunder is caused by the air moving faster then sound, been around forever. Same with meteorites. Some bullets, artillery, explosives - all faster then sound. End of a whip breaks the sound barrier. I can go on for ever.

  • @benschweiger1671
    @benschweiger1671 4 місяці тому +1

    A note: the "John Mitchell" pictured at 1:20 is John Mitchel (one L), an Irish nationalist and writer. Born ~95 years after this John Michell (clergyman, no T). Otherwise, great video as always, Paul.

  • @deandrajohnson1973
    @deandrajohnson1973 4 місяці тому

    God that is all so fascinating!

  • @darchamikar2499
    @darchamikar2499 4 місяці тому +1

    Schwarzschild is actually pronounced more like "Shvaats shilld". Translated from German it literally means "black shield".
    Funny thing is that when I first heard of this in physics class I didn't realize the Schwarzschildradius was named after its discoverer but just called like that because light doesn't get through once inside of it.

  • @soysantiagoraul
    @soysantiagoraul 4 місяці тому

    awsome!

  • @ahmedburrak0
    @ahmedburrak0 Місяць тому

    Nice video like it

  • @davidf5609
    @davidf5609 4 місяці тому

    Thanks Paul. I enjoyed the video as always. I'm not sure if you were talking about the singularity having a temperature due to Hawking radiation, it would have to come from outside the event horizon. The only reason we can know the spin, charge and mass of a black hole is because that information is accessible to the universe.

  • @david9783
    @david9783 4 місяці тому +1

    I find some comfort in that it will take so long for the universe to end. Who amongst us can fathom time on such a scale?

  • @delfininsjezus
    @delfininsjezus 4 місяці тому

    Why do I feel like this is a repost, feel like I've seen this one. Love your videos

  • @justandy333
    @justandy333 4 місяці тому

    Nothing to do with the video above but I'd like to put forward a video suggestion.
    A while back you did videos about the Spitfire engines and the Napier Deltic Engines.
    I'd love to see a video about the engines that powered the Great Western Railways Diesel Hydraulic locomotives.
    Specifically the Western Class or the Warship Class of locomotive.
    I've tried numerous times to try and get my head around how they work, But I feel you could do a far better job than anyone else out there.
    Love your work and all the best for future videos 😁

  • @needbettername8583
    @needbettername8583 4 місяці тому +1

    Imagine being so smart you're not realised until 200 years later

  • @matthewfunk4969
    @matthewfunk4969 4 місяці тому +1

    I have sat in meetings where it felt like I crossed the event horizon…

  • @glitchingwiththethugz8400
    @glitchingwiththethugz8400 4 місяці тому

    The quality of this video (and the rest of his videos) is pretty simple to describe: Curious Droid uploads, I click.

  • @user-ih7gc7dt9l
    @user-ih7gc7dt9l 4 місяці тому

    Thankyou for mentioning by design as well as evolution.❤

  • @LisztyLiszt
    @LisztyLiszt 4 місяці тому +1

    Your last point is something I've been thinking a lot about lately. What if spacetime, energy and matter are just emergent qualities of something far deeper, which we can't, and might never, see?

  • @patreekotime4578
    @patreekotime4578 4 місяці тому +2

    All of this assumes they arnt just crushed and vaporized in the accretion disk.

  • @robertfraser9551
    @robertfraser9551 4 місяці тому +1

    Roy kerr of Kerr black hole fame recently published a paper suggesting that black holes made from physical bodies may not contain singularities. So very exciting discoveries to come. And as Sabine suggests we do not have a good understanding of gravity as yet.

    • @loc4725
      @loc4725 4 місяці тому

      This. It is likely that what we call 'gravity' is a emergent property of some much more fundamental physics, and without understanding this we cannot completely understand black holes.

  • @dufushead
    @dufushead 4 місяці тому +1

    You're The Don CD. Cheers.

  • @divitya
    @divitya 4 місяці тому +1

    Just can’t wrap my head around this… No matter how many times I rewatch it.

    • @thelandofnod123
      @thelandofnod123 4 місяці тому

      I don’t think you’re alone. To paraphrase a famous physicist, if you aren’t confused, you didn’t understand it.

  • @hybridwolf66
    @hybridwolf66 4 місяці тому

    My mind is not able to comprehend. Space, and everything in it, is mindboggling.

  • @zlm001
    @zlm001 4 місяці тому

    Thanks

  • @Pottery4Life
    @Pottery4Life 4 місяці тому

    Thank you.

  • @jimsmith1856
    @jimsmith1856 3 місяці тому

    ...and now here's Bob with the weather.

  • @matttravers5764
    @matttravers5764 4 місяці тому

    I think my brain just got spaghettified.....🙃
    Great video!

  • @Modenut
    @Modenut 4 місяці тому

    The music track sounds a lot like the opening of Dead Can Dance's song "Children of The Sun" hehe. Good stuff. :)

  • @southnc63
    @southnc63 4 місяці тому +1

    Since all detected black holes appear to be spinning, it is not likely there is a singularity point. Maybe some kind of ring structure (Kerr black hole) - who knows?

  • @bluerider0988
    @bluerider0988 4 місяці тому

    This is always mine bending. It's beyond most people's comprehension.
    Thanks.

  • @SalvatoreBabones
    @SalvatoreBabones 4 місяці тому

    Bring back the opening sequence!

  • @clausing5556
    @clausing5556 4 місяці тому

    Here is an easy question. If a black hole is spinning and it has an effect on gravity, wouldn't it also grab the space/time around it and stretch it in a spiral? It could be from a weird point of view that because it is spinning and pulling space/time into ever-increasing tight bands, the light cannot get out because it keeps running to the outer bands and pulled back in.
    Next, what would happen if you were to find a way to get 1 square centimeter off a black hole and move it to a place where the gravity is equal to interstellar space (near zero)? Would it stay cranched up as a 1cm cube or would it expand out because the gravity is near zero?
    One more, if a black hole slowly evaporates, would it ever get light enough to become a thing like a star, with light able to get away from the thing black hole?

  • @eddoyle9627
    @eddoyle9627 4 місяці тому

    Thanks Phil. Savage cabbage.

  • @bondisteve3617
    @bondisteve3617 4 місяці тому

    Great Droid. Thanks.

  • @Cenotaur1
    @Cenotaur1 4 місяці тому

    The astronaut would need a serious spacesuit. The accretion disk would be quite hot.

  • @matheoo41
    @matheoo41 4 місяці тому

    I say that astronaut would live forever, in our collective memory, as the guy who fell into a black hole.

  • @MundaneMuser
    @MundaneMuser 4 місяці тому

    Fascinating, but this gave me a profound sense of dread. 😂😂

  • @1977Yakko
    @1977Yakko 4 місяці тому

    Falling into a Black Hole? Eh, I didn't have plans for the weekend anyways...
    😁

  • @andybibby342
    @andybibby342 4 місяці тому

    I needed a lie down after watching this video!

  • @sajukkhar
    @sajukkhar 4 місяці тому

    You get fried by all the light of the universe falling in gets blue-shifted

  • @ConradSpoke
    @ConradSpoke 4 місяці тому

    So, nobody can see my FaceTime as I fall into a black hole?
    I'm not going.

  • @Plons0Nard
    @Plons0Nard 4 місяці тому

    "Nothing travels faster than light. With the possible exception of Bad News"
    H2G2, the book that tells it all 😊

  • @ChrisSmith-lk2vq
    @ChrisSmith-lk2vq 4 місяці тому +3

    I have a question about the time dilation and maybe someone can point me in the right direction:.
    As pointed out in this video: when the astronaut comes closer to the horizon for the OUTSIDE observer his/her time would seem asymptomatically slowed down until the astronaut seems to "freeze" at the horizon itself.
    For the astronaut looking BACK the universe though would look increasingly sped up asymptomatically until the universe rushes by at an infinite rate (like for the photon traveling though the universe in 0-time).
    So HOW does the astronaut ever enter the black hole (crossing the schwarzschild radius for that matter) in the first place? In BOTH reference frames it seems odd:
    - The outside observer would NEVER get the information of crossing.
    - The astronaut himself could cross the horizon no problem but the universe would be over by then.
    So both views lead to my question: how do black holes grow in mass at all if all matter is "frozen" at the horizon?
    Thanks a lot !!
    -Chris

    • @TheGuruStud
      @TheGuruStud 4 місяці тому

      there is no outside observer b/c they're all long dead lol

    • @ChrisSmith-lk2vq
      @ChrisSmith-lk2vq 4 місяці тому

      @@TheGuruStud -.- not very helpful.

    • @thirdeyefocus6255
      @thirdeyefocus6255 4 місяці тому

      I think the answer is that the event horizon is not yet the center (the singularity) of the black hole. It is only once you reach the singularity that the "universe is over".

  • @jeffallen3382
    @jeffallen3382 4 місяці тому

    Cooper: CASE, get ready to match our spin with the retro thrusters.
    CASE: It's not possible.
    Cooper: No. It's necessary.
    Best line in any movie ever!

  • @Italianjedi7
    @Italianjedi7 4 місяці тому

    So hypothetically, Paul- if I had a starship that could move FTL, could I enter the horizon of a black hole and then fly back out and be far far in the future? Like if I hate my place in time; I could effectively use a forward one-way time machine?

  • @pwmiles56
    @pwmiles56 4 місяці тому

    Me in the Department of Applied Mathematics and Theoretical Physics, Silver Street, Cambridge, circa 1975. I see a line printer poster pasted to the inside of a glass office door: "Black Holes Are Out Of Sight". 19 year old me: OK, right. Several years later: oh I get it, it was Hawking's office. True story

  • @philmatthews3537
    @philmatthews3537 4 місяці тому

    Schrödinger's cat.... the idea came about through a conversation between Einstein and Schrodinger about the Copenhagen interpretation of Quantum theory. They disagreed with the theory, Einstein gave the cat as real world example of how quantum theory would work at the macro-scale. Schrodinger later on quoted it and was then known for saying it even though it was actually Einstein who originally said it. Also, the example of the cat was not that it IS both dead and alive at the same time, but that it IS EITHER dead or alive UNTIL IT IS OBSERVED. It's the observation of it that decides whether the cat is dead or alive. It's this idea that Einstein and Schrodinger disagreed with. Apologies for caps lock, just to highlight the key words in the sentence.

  • @spooney64
    @spooney64 4 місяці тому +1

    Schwarzschild is roughly pronounced like Shwarts + Shield (Litteral translation = black shield)

  • @longboardfella5306
    @longboardfella5306 4 місяці тому

    I'm here for the shirts

  • @JesseLH88
    @JesseLH88 4 місяці тому

    I am glad Droid corrected the 'you get spaghetti-fied by a black hole' myth.

    • @TheGuruStud
      @TheGuruStud 4 місяці тому

      What's to correct? You will get get stretched in regular black holes....

    • @JesseLH88
      @JesseLH88 4 місяці тому

      @@TheGuruStud he explained that it depends on the density of the black hole

  • @Foxxorz
    @Foxxorz 4 місяці тому

    Falling into a black hole sounds like it would be as fun as getting stuck in a flooding cave. When the black holes evaporate will the astronaut pop back out?

  • @rainiernqc
    @rainiernqc 4 місяці тому

    I love videos about this but at the same time i keep thinking that i'm dumb because if someone ask me to explain i will not be able to even that i watch this video 100x. It's so intriguing

  • @plasmaburndeath
    @plasmaburndeath 4 місяці тому +1

    NOOOO, I hear Sabine Hossenfelder right now maybe in German, "Gravity is not a force!" 😀

  • @choo_choo_
    @choo_choo_ 4 місяці тому +1

    I don't get it. If you fall into a black hole and time passes so fast you witness and exist past the heat-death of the universe, doesn't that also mean that by the time you actually reach the singularity the black hole would have already dissolved and you don't ever reach it? No, right?

    • @cookymonstr7918
      @cookymonstr7918 4 місяці тому

      The thing is the BH is "inside" and the "speed-up" is going on "outside". (I am using an awful lot of quotation marks lately.)

  • @RandomRoger
    @RandomRoger 4 місяці тому

    As soon as I saw the title, my brain said, "Nothing good."

  • @TheUmbrella1976
    @TheUmbrella1976 4 місяці тому

    Great video! I have a question. If time at the EH comes to a stop for an outside observer (the rest of the universe) how can anything at all fall into a black hole? In other words, how did they grow?

    • @jeremyb1346
      @jeremyb1346 4 місяці тому

      Tough questions.
      For the first one : the answer really depends on the observer. You just can't describe anything crossing the horizon using the distant observer's time coordinate. It never sees how the horizon looks like, this region of spacetime is forbidden for him, it only sees light rays emitted by something that's already in its far future. Basically, you'll never see something cross the horizon but you can feel the gravitational field is increasing.
      For the second question :
      All you need for a black hole to grow is this fact : "for a free-falling observer it takes a finite time to reach the center of a black hole". Plus there is an additional effect : if a clump of matter crashes onto a black hole, its overall mass increases and the radius of the black hole becomes larger. It eats some of the clump (but not all of it).

    • @TheUmbrella1976
      @TheUmbrella1976 4 місяці тому

      @@jeremyb1346 hmm... But if time, I am not talking about radiation but spacetime itself, gets infinitely dilated at the EH from a distant reference, then of course matter can still accumulate on the outside of the EH but never fall in because time stands still. So any BH should be encapsulated in hot matter, which wouldn't appear hot but cold as atoms don't move observed from our perspective.
      Of course if we would travel there, we would see it all going in but if we then turn around and look back to earth billions of years would have passed there.

    • @jeremyb1346
      @jeremyb1346 4 місяці тому

      @@TheUmbrella1976 Yeah but the sentence "any BH should be encapsulated in hot matter" is a bit confusing. If you work with the proper time of this hot matter you must conclude its not encapsulating the BH. That would be weird to work with a coordinate that describes only partially its geodesics.
      There seem to be a paradox between "what the distant observer sees" and "what an inertial (free-fall) observer sees" but it seems to me we already had such puzzling problems with the relativity of simultaneity in special relativity.

  • @Olebull93
    @Olebull93 4 місяці тому +1

    "They irradiated their own planet?!" "If Nog says so they did. He knows'

  • @MTbone7
    @MTbone7 4 місяці тому

    Pretty sure the astronaut will end up behind a bookcase in his daughters bedroom

  • @shermangriffin4668
    @shermangriffin4668 4 місяці тому

    I am surprised we haven't shot a satellite or sensor into one. It might provide some interesting data. I love this channel. It is so interesting.

    • @darchamikar2499
      @darchamikar2499 4 місяці тому +1

      Because the nearest known one is is about 400 time farther away than the next star. And it would take a current gen satellite almost 100 000 years to get even there.

    • @shermangriffin4668
      @shermangriffin4668 4 місяці тому

      @darchamikar2499 It make sense but I just know with the satellite we sent out back in the seventies has reached the outer part of our solar system.

  • @TucsonDude
    @TucsonDude 4 місяці тому

    Is it even possible to have a discussion like this without bringing up A/E?

  • @ronniabati
    @ronniabati 21 день тому

    Wouldn’t the observer falling into the black hole see the Galaxy rapidly evolve into eventual “end of the universe” due to the time dilation?
    And, wouldn’t the black hole likewise be evolving by “evaporate away” due to Hawking radiation?
    So, the observer would never truly reach the “singularity”?