A 9-minute journey inside a black hole | Janna Levin
HTML-код
- Опубликовано: 20 авг 2023
- Ever wonder what would happen if we got sucked into a black hole? Turns out we could live in it - if it was big enough.
❍ Subscribe to The Well on RUclips: bit.ly/welcometothewell
❍ Up next: This is what the fourth dimension looks like | • This is what the fourt...
Black holes should be thought of as "empty places" rather than "dense objects." While they are indeed formed from incredibly dense objects (collapsed stars), the black hole itself is nothing.
Black holes could have played a crucial role in the emergence of life. Ironically, the Solar System is in orbit around a supermassive black hole located in the center of our Milky Way galaxy. And one day, we might fall into a black hole.
If you were out in space exploring and you didn't realize you were coming upon a black hole, you would not notice that anything terrible was about to happen. Eventually, however, you would succumb to a terrifying fate.
Read the full video transcript: bigthink.com/the-well/what-wo...
----------------------------------------------------------------------------------
❍ About The Well ❍
Do we inhabit a multiverse? Do we have free will? What is love? Is evolution directional? There are no simple answers to life’s biggest questions, and that’s why they’re the questions occupying the world’s brightest minds.
So what do they think?
How is the power of science advancing understanding? How are philosophers and theologians tackling these fascinating questions?
Let’s dive into The Well.
----------------------------------------------------------------------------------
Join The Well on your favorite platforms:
❍ Facebook: bit.ly/thewellFB
❍ Instagram: bit.ly/thewellIG 
Наука
12 year old me would panic and think this is a serious threat to my daily life
Haha, I am sure there also adults who worry about stuff like this. 😂
That's the intention. To create fear in those who believe these threats are real. Such as a big ass "asteroid" hurtling towards Earth 😂😂😂
🙃 uh oh somebody reminiscing childhood memories 😭😭😭❤
I love watching black hole videos and this one takes the cake. Especially with talk of singularlities. So fascinating.
Physics and Astronomy have always amazed me. I just wish I understood and could comprehend it. 🤯
😊😅😊 ми😮
@@kikriki83😊😊😊w
Don't worry, anyone explaining black holes like 0:30 doesn't understand physics.
The queen Janna Levin! Love this intelligent woman!
Fun Fact: She's a high school dropout.. this just goes to show what's possible if you put your mind to it!
She's awesome, isn't she? More videos with Janna on the way... Stay tuned!
Lol she has a PhD degree from MIT
Is she related to Michael Levin, who's also been on this channel?
that's so cool! as a fellow dropout that makes me feel better 😅
I think without a doubt black holes are necessary for the universe. This is exactly what I have imagined, mass and energy are both the same thing except when the black hole destroys particles they no longer need a solid form to represent mass. Mass becomes a combined identity of a black hole It is mass without an image
I've been called crazy for this, but if I could choose the method of my own demise, spaghettification would be the way I would go. Some think it would be painful, but I have my doubts as the nerve endings that would generate those impulses would be getting pulled away, possibly before they could send signals.
Another bonus is that you'd likely be the focus of at least a few scientific papers!
Cool! You could send a copy of it in there after me so my residual subatomics could read it.
Maths , Physics and Astronomy seems to be so cool subjects when you realise they have things to offer that can your mind. It's like watching Interstellar franchise. Wouldn't that be cool.
This is the first explanation I have ever understood of black holes
she is explaining everything so so well, i like her so much!! more jenna!
I happen to think that the reason we reach infinity in the math of singularities, is because a black hole literally punctures spacetime, and the singularity is the point where a ripped hole in spacetime exists, that leads to what is called the inflaton field. We get infinite density, and as she says, information that falls into the singularity appears to literally no longer exist in spacetime - because it is indeed pushed through a rip in spacetime out into the inflaton field from which spacetime itself and the universes bound by it emerge.
The problem is you can prove-if general relativity is the whole story-that you do reach the puncture in a finite time.
@@jannalevinastro i don't see how that's a problem. Reaching it in a finite amount of time doesn't clash with any aspects of the proposed notion.
Information can't "fall" into something. Because absense of something is information too. And to begin with, we do not have yet theory which would explain universe down to the smallest, trully undivided parts. We do not know how everithing started, we do not know life cycle of black holes. Big bang bullshit is built on assumptions and very scarce and basic information available. There is no empiric evidence at all.
Yet some people talk about things as if they know shit... Well science is industry too, and to survive within it, you should make money, and to make money you should talk belivable shit even if it is bullshit xD
I could listen to Dr. Levin speak about black holes all day. I highly recommend her book 'Black Hole Survival Guide'. There is literally nothing more interesting to me in the entire universe than black holes.
We absolutely agree. She's beyond brilliant! Thanks for watching and sharing your insight!
We sure have gone a long way in the last 500 years in the understanding of everything. I cannot imagine 500 years from now knowledge that humankind will have.
The odds are our actions Will self destruct this planet habitat . History will show humans Will have been a very small blimp in the history of life on this planet.
Humans 2.0 will come along and our remains will be on show in museums like the next dinosaur.
@@supes323 That’s also how I view it. What goes around comes around. That’s evolution
Your explanation about black hole is very interesting and makes me fall into it like a black hole does to everything existing and having a destiny to fall into it.
This is so damn interesting.
Wonderfully explained.
Exact same dream I had when I was little. At the end of the universe only black holes are there after absorbing all the physical matter. Each black being the size of times 100 to the observable universe. So dense that multiple big bang happening each by these ultra super massive black holes. Each black hole responsible for creating a universe itself.
If a neutron star has a solid surface and can sometimes be mistaken for a black hole, then can't the centre of a black hole could also have a solid surface of a much denser and smaller star?
There is remnant hypothesis that instead of a singularity there is a spectacularly dense quantum remnant. It poses theoretical problems due to the insane entropy requirements so is not favored as a resolution of the singularity
@@jannalevinastro Thank you. I somehow perceive black holes as the tangible existence of the Divine. Where two branches of physics collide. Where laws break down into infinity. A riddle almost impossible to solve and yet its common place existence.
I think black holes pulverizing you down to an atomic level might be a sort of “requirement” to allow you to exist within an “alternate dimension” you’re potentially entering. Perhaps the conservation of mass and energy doesn’t not simply “poof” out of existence within the confines of a black hole.
Something like ant man
How does this 6 kilometer condensed sun continue to collapse to nothing? Define nothing, define this empty space, because as far as I'm aware, black holes have different masses. My intuition tells me that nothing is a singularity in this context and I'd have to assume that as matter accretes around this singularity, this matter is what creates the mass then? Janna, if this is true? I need your expertise.
Nice video 😃
❤ everything about this, excited for the singularity!!
Amazing information, thank you for sharing ♥
Thanks for being here! We have more videos with Janna Levin coming in the next few weeks, so stay tuned! ❤️
Lots of great information!
Glad you think so! Thanks for watching!
Thanks , it was a nice experence for me as a geologist
What if you put all your thrust in your ship into the black hole? So you weren't being so much dragged into it as shooting into it. Or would it even matter at that point in that type of gravity?
RUclips: * _spits out an interesting video about black holes_
Me: "Well, i guess my work will have to wait then."
Great video. I've watched and read lots of content on black holes, but the view provided in this video felt fresh and insightful. I liked it. 👍
We're glad you liked it! Thanks for being here!
They make this shit up, I'm convinced! How on Earth lol do you start to even make sense of any of this. Like tryin to imagine how big the entire galaxy is 🤯🤯🤯
Wondering about micro-black holes. What are the limitations on size for black holes? Can we imagine the concept of sizelessness along with timelessness and spacelessness? Is it possible that on this side of a black hole we have a 3-D of space and 1-D of time, and past the event horizon we have 1-D of space and 3-D of time?
Are the forces of density at the centre of a black hole in any way similar to forces of density that obliterated the oceangate sub?
So if you had an antigravity space craft could you use the black hole for time travel?
"If you got close to a black hole" , , ,
How close is "close" ?? 93 million miles ?? (as with our sun??) How about a light year ?? (That would be 5.879 x 10¹² miles)
I maintain that "close" , when it comes to black holes , is a fantasy we will NEVER get "close" enough to experience‼️‼️😵💫
If someone would deadass offer you a trip into a black hole, would you take it??
What if you were near death, and we could opt into a trip right before we go?
@@Vanessa-iq3vt nah nah, that's playing it on easy mode :D right here, right now. Spicy question :DD
I don't know if I would do it. I am quite young but a hypothetical chance like that would never ever come for humanity I think.
Mercy no
Yes
Depends which hole
I would like to know what Ianna thinks about Samir Marhur and co’s fuzzball theory that uses string theory to theorize that there is indeed something, i.e. structure in the horizon. He days to think of black hole as a planet. In other words, the classical description of black holes is wrong
Time is relative to people on earth .time is just the movement of earth around the sun so if someone was away from our solar system wud they still use our time .if someone was ina black hole light years away how would that effect our time ? Who's time would they use ,? Thanks for video
What about hawking radiation?
They say nothing can escape a black hole, what about the plasma jet that the black hole shoots out every time it devours a star?
Nothing can escape past the event horizon, and even that could be stated better as nothing with mass (or mass effect like a photon) can accelerate out of the gravitational well of a black hole once past the event horizon.
The jets are caused by rotating charged particles like a big spinning turbine creating a huge magnetic field pushing out particles with great speed.
The jets do not emanate from inside the black hole. The magnetic fields are seeded in matter around the black hole and the spin of the black hole churns them up and drives hot matter along the field as though they are currents along a wire. All of that happens just outside the black hole
**Hawking radiation and the no hiding principle have entered the chat**
👍🏴😎
Black holowholes. Where's my Nobel?
Here it is ▶️ 🏆
How would being in a black hole light years away from our solar system slow the revolutions of eRth around the sun?
But Energy can't be destroyed ❤
8 30 alarm
Sounds like a normal Monday to me
We probably be part of the hole
What if the known universe is a black hole, the big bang was the birth of the singularity.
what if all of space is one black hole
I want to go into the blackhole if i can, it would be great, no one really knows what is at the center in the deep, uts all assumptions, i want to see in the deep dead center
As Hawking Radiation ☢️ says …Let’s Go Round Again 💥…Baby I'm back 🌍🌎🌏😉 🏴😎
the Big bang came from a black hole (a singularity). Just a random thought
Saying "you can cross event horizon and watch" 5:20 is so damn funny. Aren't there things that, you know, orbit black hole. If whole galaxy can swirl around it on insane speeds, imagine how fast random atoms swirl near a black hole, before they fall into it. There will be nothing left of your ship and body long before you would even come close to event horizon.
Some black holes are pretty bare without a lot of orbiting debris
@@jannalevinastro for sure 🤣
Why are we here
So you're saying there is still a chance to get rid of the US national debt, if we threw it into a small enough black hole?
So noone yet has been to a blackhole which might not be black at all; just some suggestions and buy my book promotion 😂
行深般若波罗密多时，照见五蕴皆空，度一切苦厄
If you achieve Moksha, you’ll be right in the Singularity
@@desiderata8811 It’s not important; no one can prove it, even if someone achieved that
@@abytebit . for better and for worse, proving is not important for believers.
I find the last half minute of this video so ridiculously unnescessary and almost detrimental to the subject. I find it such a pity that people get scared of science to the point that seriously skilled scientists have to put them at ease with a nonsensical pat on the head, that only confirms the irrational, or at least completely irrelevant, fear of things we don't understand. I do appreciate if this is really something that Levin feels, in which case by all means, but it is a common part of high science communication, which in many cases is completely unnescessary.
Black holes are just data dumps . Lol idfk
wrong.
That is were Satan will be bound for 1000 years 😹😸.
Levin has a complete wrong idea of a block hole. Although it is called a hole, it is, in spite of what she is saying, far from empty. Its completely filled with mass, so dense that we don't understand how something so dense can exist. But we know for sure it is dense, and certainly not empty. Also, she appears to have no idea of what an event horizon is as she is saying that you could cross the event horizon and you could watch the galaxy evolve behind you. That is plain nonsense, as your time has come to an absolute standstill when you crossed the event horizon. So you cannot be aware of anything, let alone watch the galaxy evolve behind you. It's simply not true!
BTW the concept of spacetime is a flawed concept and simply wrong. But that's for the future 🙂
She's right and you're wrong, at least according to general relativity. You can watch other educational videos to understand it better.
You’re absolutely wrong in every way you can imagine. Educate yourself or get off RUclips
@@pavelpotocek Definitely not. She, like many educational videos, are wrong and clearly don't understand relativity. It's a known fact that time comes to an absolute standstill at the event horizon. The event horizon is the equivalent of the light speed, at which, if you could actually reach it, time also comes to a standstill.
@@peterdamen2161 Do _you_ understand relativity, have you studied it? Time stops at the horizon from the POV of an outside obsever. But from POV of the guy falling inside, they feel just fine as they cross the horizon, their clock is ticking, and they can see outside the BH (somewhat) normally. Just as the PhD in the video says.
@@pavelpotocek I have studied it extensively. And I think that your idea of how the event horizon functions is wrong, as is that of Levin. As long as time is dilated, the person doesn't perceive the dilation. And for kinetic time dilation, as the speed of light cannot be reached, only asymptotically, time for someone almost travelling at the speed of light doesn't stop. But for gravitational time dilation, at the event horizon, it is different from that, as that can actually be reached and traversed. And then time really stops, and I mean for the person transversing it. For an outside observer it doesn't stop. So it is just the other way around from what you think.
They don't actually know..what it is like to be inside. It is just a guess work. Watch interstellar for more information.
I love interstellar but it’s a guess work. Good ideas and concepts introduced, but nonetheless guess work
Lol “it’s all guess work so go watch a Hollywood movie for further info” 😂
It’s important for the layperson to realise that what’s described in this video is not guess work, the ‘guesses’ about black holes have been pretty accurate to date, and that’s because the predictions are based on rigorous mathematical theories that predict what ought to happen to matter as it falls in.
And for the record what the math says doesn’t involve entering a gigantic hall filled with strings and seeing your daughter from behind a bookshelf.
The original treatment for Interstellar was written by Nobel Laureate Kip Thorne, who taught me a lot.
@@btn237what's described in the video IS guess work because we have not done any experiments on black holes. You need multiple reproducible experiments with controls etc. We don't have that. So it's guess work.
The observations and mathematical estimates are interesting though. But we do not have a good understanding of what's happening at the center of the galaxy.
@@SamsonDerrer what I’m getting at here is that when you say ‘guess work’ to the lay person, they understand that as “an idea pulled from their arse, based on potentially nothing at all”.
On the other hand the version of ‘guess work’ on display here is “many of the brightest minds on the planet have spent years developing a theory to describe what happens in a black hole and this is their collectively arrived at best understanding which they can show you maths to back up, and evidence when available (such as the picture they took of the centre of our galaxy) has so far been supporting their predictions”.
And those are two different things.
It should also be noted to the lay person that while we can’t directly study the interior of a black hole, all the concepts discussed here such as time dilation, gravitation and the effects of it on space and time, quantum physics and so on are all well studied and verified phenomena because they apply everywhere and not just near to a black hole.
Špagetizacija