What Would Happen if you fell into a Black Hole?

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  • čas přidán 19. 01. 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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Komentáře • 393

  • @thany3
    @thany3 Před 4 měsíci +221

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

    • @--Snowy--
      @--Snowy-- Před 4 měsíci +7

      That's deep bro

    • @ABrit-bt6ce
      @ABrit-bt6ce Před 4 měsíci +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 Před 4 měsíci +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 Před 4 měsíci +4

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

    • @patreekotime4578
      @patreekotime4578 Před 4 měsíci +10

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

  • @paulhaynes8045
    @paulhaynes8045 Před 4 měsíci +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 Před 4 měsíci +6

      Yeah. A friend told me that, so I watched and have re-subscribed.
      I pay for CZcams 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 Před 4 měsíci

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

    • @zka77
      @zka77 Před 4 měsíci

      AdGuard helps :)

    • @ross-carlson
      @ross-carlson Před 4 měsíci +1

      Are you guys not aware of uBlock Origin? I haven't seen an ad on CZcams in literally years - and even now with CZcams 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 Před 4 měsíci +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 Před 4 měsíci +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 Před 4 měsíci

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

  • @benediktkohler28
    @benediktkohler28 Před 4 měsíci +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 Před 4 měsíci +10

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

    • @loc4725
      @loc4725 Před 4 měsíci +5

      Sh-varw-sh-il'ed.

    • @1_2_die2
      @1_2_die2 Před 4 měsíci +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 Před 4 měsíci +2

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

    • @loc4725
      @loc4725 Před 4 měsíci +1

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

  • @brianmessemer2973
    @brianmessemer2973 Před 4 měsíci +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 Před 4 měsíci +3

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

  • @marcodebruin5370
    @marcodebruin5370 Před 4 měsíci +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 Před 4 měsíci +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 Před 4 měsíci +18

    Mind officially blown - yet another stellar video, thanks 👍

  • @Cossack124
    @Cossack124 Před 4 měsíci +6

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

  • @JohnComeOnMan
    @JohnComeOnMan Před 4 měsíci +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 Před 4 měsíci +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 Před 4 měsíci +6

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

    • @garrysekelli6776
      @garrysekelli6776 Před 4 měsíci +4

      Emperor palpatine vibes.

    • @ConvincedIdiot
      @ConvincedIdiot Před 4 měsíci

      I'd watch that film.

    • @MrFancyFingers
      @MrFancyFingers Před 4 měsíci +1

      The hills have eyes

  • @emcsquare62
    @emcsquare62 Před 4 měsíci +14

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

  • @CarMake
    @CarMake Před 4 měsíci +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 Před 4 měsíci +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!

  • @spurgear
    @spurgear Před 4 měsíci +18

    "Die." - Lt. Commander Worf

  • @gareththompson2708
    @gareththompson2708 Před 4 měsíci +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 Před 4 měsíci

      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 Před 3 měsíci +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

  • @itsemz2634
    @itsemz2634 Před 3 měsíci +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 :)

  • @giovanniguaitini7454
    @giovanniguaitini7454 Před 4 měsíci +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!

  • @GregiiFlieger
    @GregiiFlieger Před 2 měsíci

    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!

  • @-TheRealChris
    @-TheRealChris Před 4 měsíci +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!"

  • @EricMBlog
    @EricMBlog Před 4 měsíci +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 Před 4 měsíci

    Always a good video from you. Thank you.

  • @mpireoutdoors5274
    @mpireoutdoors5274 Před 4 měsíci +1

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

  • @HazelS71
    @HazelS71 Před 4 měsíci +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!!!

  • @baxterboy23
    @baxterboy23 Před 4 měsíci +2

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

  • @regolith1350
    @regolith1350 Před 4 měsíci +2

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

  • @stoerenungeheuer543
    @stoerenungeheuer543 Před 4 měsíci +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 Před 4 měsíci +1

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

    • @chromaticAberration
      @chromaticAberration Před 4 měsíci

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

    • @chromaticAberration
      @chromaticAberration Před 4 měsíci +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 Před 4 měsíci +1

      @@chromaticAberration Greetings to Denmark!

  • @martij30
    @martij30 Před 4 měsíci

    Amazing video, as always.

  • @hanibachi3719
    @hanibachi3719 Před 4 měsíci +1

    This was significantly more clear and helpful than other youtube videos

  • @michaelskinner896
    @michaelskinner896 Před 4 měsíci +1

    Just mind-bending stuff really. Great presentation.

  • @knoxduder
    @knoxduder Před 4 měsíci

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

  • @steveshoemaker6347
    @steveshoemaker6347 Před 4 měsíci +1

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

  • @fensoxx
    @fensoxx Před 4 měsíci

    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.

  • @terrylandess6072
    @terrylandess6072 Před 4 měsíci +4

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

  • @kevinburt44
    @kevinburt44 Před 4 měsíci

    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.

  • @abxorb
    @abxorb Před 4 měsíci +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". 😅

  • @WalterBurton
    @WalterBurton Před 3 měsíci

    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. 👍

  • @metallusmelandril7380
    @metallusmelandril7380 Před 4 měsíci

    Nice watch!

  • @40pike96
    @40pike96 Před 4 měsíci

    scary stuff. good video.

  • @AdamJRichardson
    @AdamJRichardson Před 4 měsíci

    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 Před 4 měsíci +3

    Reminds me of the speculation before the sound barrier was broken

    • @ABrit-bt6ce
      @ABrit-bt6ce Před 4 měsíci

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

    • @patreekotime4578
      @patreekotime4578 Před 4 měsíci +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 Před 4 měsíci

      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.

  • @justandy333
    @justandy333 Před 3 měsíci

    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 😁

  • @JH_75
    @JH_75 Před 4 měsíci +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 Před 4 měsíci

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

    • @mapesdhs597
      @mapesdhs597 Před 4 měsíci

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

    • @AussieDaz87
      @AussieDaz87 Před 4 měsíci +1

      Brian Cox and Veritasium have some great Black Hole explainers

    • @mapesdhs597
      @mapesdhs597 Před 4 měsíci

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

  • @NeonNijahn
    @NeonNijahn Před 3 měsíci +1

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

  • @thelittlehooer
    @thelittlehooer Před 4 měsíci +1

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

  • @schnabeltier516
    @schnabeltier516 Před 4 měsíci +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 Před 4 měsíci

      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.

  • @davidf5609
    @davidf5609 Před 4 měsíci

    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.

  • @darchamikar2499
    @darchamikar2499 Před 3 měsíci +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.

  • @benschweiger1671
    @benschweiger1671 Před 3 měsíci +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.

  • @robertfraser9551
    @robertfraser9551 Před 4 měsíci +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 Před 4 měsíci

      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.

  • @soysantiagoraul
    @soysantiagoraul Před 4 měsíci

    awsome!

  • @user-ih7gc7dt9l
    @user-ih7gc7dt9l Před 4 měsíci

    Thankyou for mentioning by design as well as evolution.❤

  • @deandrajohnson1973
    @deandrajohnson1973 Před 4 měsíci

    God that is all so fascinating!

  • @ahmedburrak0
    @ahmedburrak0 Před 20 dny

    Nice video like it

  • @matttravers5764
    @matttravers5764 Před 4 měsíci

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

  • @patreekotime4578
    @patreekotime4578 Před 4 měsíci +2

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

  • @delfininsjezus
    @delfininsjezus Před 4 měsíci

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

  • @Modenut
    @Modenut Před 4 měsíci

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

  • @zlm001
    @zlm001 Před 4 měsíci

    Thanks

  • @LisztyLiszt
    @LisztyLiszt Před 4 měsíci +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?

  • @needbettername8583
    @needbettername8583 Před 4 měsíci +1

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

  • @southnc63
    @southnc63 Před 4 měsíci +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?

  • @glitchingwiththethugz8400
    @glitchingwiththethugz8400 Před 3 měsíci

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

  • @david9783
    @david9783 Před 4 měsíci +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?

  • @Pottery4Life
    @Pottery4Life Před 4 měsíci

    Thank you.

  • @dufushead
    @dufushead Před 4 měsíci +1

    You're The Don CD. Cheers.

  • @clausing5556
    @clausing5556 Před 4 měsíci

    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?

  • @matthewfunk4969
    @matthewfunk4969 Před 4 měsíci +1

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

  • @divitya
    @divitya Před 4 měsíci +1

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

    • @thelandofnod123
      @thelandofnod123 Před 4 měsíci

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

  • @1977Yakko
    @1977Yakko Před 4 měsíci

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

  • @hybridwolf66
    @hybridwolf66 Před 4 měsíci

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

  • @spooney64
    @spooney64 Před 4 měsíci +1

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

  • @MundaneMuser
    @MundaneMuser Před 4 měsíci

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

  • @Plons0Nard
    @Plons0Nard Před 4 měsíci

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

  • @Cenotaur1
    @Cenotaur1 Před 4 měsíci

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

  • @ConradSpoke
    @ConradSpoke Před 4 měsíci

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

  • @SalvatoreBabones
    @SalvatoreBabones Před 4 měsíci

    Bring back the opening sequence!

  • @bluerider0988
    @bluerider0988 Před 4 měsíci

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

  • @jimsmith1856
    @jimsmith1856 Před 3 měsíci

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

  • @andybibby342
    @andybibby342 Před 4 měsíci

    I needed a lie down after watching this video!

  • @bondisteve3617
    @bondisteve3617 Před 4 měsíci

    Great Droid. Thanks.

  • @pwmiles56
    @pwmiles56 Před 4 měsíci

    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 Před 4 měsíci

    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.

  • @sajukkhar
    @sajukkhar Před 4 měsíci

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

  • @rainiernqc
    @rainiernqc Před 4 měsíci

    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

  • @TheUmbrella1976
    @TheUmbrella1976 Před 3 měsíci

    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 Před 3 měsíci

      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 Před 3 měsíci

      @@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 Před 3 měsíci

      @@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.

  • @jeffallen3382
    @jeffallen3382 Před 4 měsíci

    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!

  • @matheoo41
    @matheoo41 Před 4 měsíci

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

  • @eddoyle9627
    @eddoyle9627 Před 4 měsíci

    Thanks Phil. Savage cabbage.

  • @JesseLH88
    @JesseLH88 Před 4 měsíci

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

    • @TheGuruStud
      @TheGuruStud Před 4 měsíci

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

    • @JesseLH88
      @JesseLH88 Před 4 měsíci

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

  • @ronniabati
    @ronniabati Před 10 dny

    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”?

  • @Olebull93
    @Olebull93 Před 4 měsíci +1

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

  • @Italianjedi7
    @Italianjedi7 Před 4 měsíci

    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?

  • @ChrisSmith-lk2vq
    @ChrisSmith-lk2vq Před 4 měsíci +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 Před 4 měsíci

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

    • @ChrisSmith-lk2vq
      @ChrisSmith-lk2vq Před 4 měsíci

      @@TheGuruStud -.- not very helpful.

    • @thirdeyefocus6255
      @thirdeyefocus6255 Před 3 měsíci

      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".

  • @plasmaburndeath
    @plasmaburndeath Před 4 měsíci +1

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

  • @CarFreeSegnitz
    @CarFreeSegnitz Před 4 měsíci

    The astronaut would go in and in his/her subjective time reach the singularity in seconds or minutes. Outside observers, if they could live long enough, would witness the black hole evaporate into Hawking Radiation over 10^100 years. From this universe’s perspective black holes are the ultimate meat grinder, turning astronauts into extremely rarified Hawking Radiation over crazy time spans.

  • @RandomRoger
    @RandomRoger Před 4 měsíci

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

  • @shermangriffin4668
    @shermangriffin4668 Před 4 měsíci

    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 Před 3 měsíci +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 Před 3 měsíci

      @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.

  • @will2see
    @will2see Před 4 měsíci

    Sir, please tell me, where do you buy your fantastic shirts?

  • @Foxxorz
    @Foxxorz Před 4 měsíci

    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?

  • @Dave-kq7gv
    @Dave-kq7gv Před 4 měsíci

    yo I had no idea that Sid Meyer's videogame Spore made shirts!

  • @boblevieux
    @boblevieux Před 4 měsíci

    The ship would be shredded by the particles orbiting it, before even reaching the the accretion disc.