Best of: Neil deGrasse Tyson Explains Black Holes

[@StarTalk]

Raise your hand if you’re such a big StarTalk fan that you already knew everything in this video🙋

[@PstJstd]

🙋

[@CliffordJohnstonVIP007]

I remember when you dropped these individually ha-ha. good to have some recap!

[@theduder2617]

Well to be honest, I am learning or at least trying to learn about the contents of this video. To say I "know" would be dishonest. But I know those educated enough to investigate black holes understand what they are discussing, so I listen with complete focus. I'm making effort, so that counts a little bit. lol

[@marble25]

I am sure most of us don't know what uncertainty principle is and why it exists. Would be great if Neil explained this to Chuck. If Chuck can gets it, rest assured we all will. :)

[@_leokratis_]

🙋

[@simon-white]

We need more Janna Levin collabs, she's a stellar science communicator.

[@Dynamic0NE]

Not to mention drop dead gorgeous.....a woman with the type of open minded thinking she has mixed with her looks is the perfect woman in my opinion.

[@trigonzobob]

I see what you did, there

[@DavidHanniganJr]

Yeah because she's a "stroller" fox.

[@power2084]

she's hot

[@MiserableLemon]

she's so dope

[@ThatNerdChris]

Black holes are so cool! Hard to believe something like that actually exists.

[@dragonslayerwill_travel3476]

Black holes don't actually exist! It's only theoretical there are no proof of black holes existence! The Electric Universe is more probable! 🕳️

[@nicksdaarvan3180]

@@dragonslayerwill_travel3476 Question everything.

[@BushidoBrownSama]

@@dragonslayerwill_travel3476 they've been observed & consensus places them at the center of most galaxies

[@ejmtv3]

even Einstein didnt believe it is possible.

[@Broockle]

@@dragonslayerwill_travel3476 u'r a fruit please learn the meaning of a "theory" and of the "scientific method"

[@HilariousGameEdits]

When I sit thru a high school science class all I ever learned was how long a minute could feel. When i watch 5 minutes of star talk I wonder how school got it so wrong. I love you guys and truly appreciate the everything you guys give us. Please please don’t stop

[@inertiaforce7846]

That's because school sucks. Real knowledge is attained from one's own interest, not by force, threat, or coercion.

[@ZeroFlowers]

@@inertiaforce7846 facts

[@crithon]

"I can't let Chuck Nice lose a brain gasket here, I need him for another show."

[@caveman1226]

“Once you go black, you never go back.” - Neil deGrasse Tyson, 2021

[@Robert_McGarry_Poems]

Black car, Black hair, Black coffee, Black lung, Black death, 🤔 This went sideways...

[@cchosch]

Time stamp?

[@caveman1226]

@@cchosch was paraphrasing 0:25-0:50. Didn’t actually say that but you KNOW they were both thinking it.

[@Geezer-yf8hv]

So true!!!

[@israeltorres3592]

We just say it how it is......

[@dustinpaulson1123]

I heard that if you threw Eminem into a black hole, you'd get to witness the first "Mom's spaghettification".

[@EaastonCams]

Niceee

[@Kaneblade07]

Well played

[@user-oi6ec8ge4c]

High school science teacher jokes are like dad jokes on steroids

[@kikijihan8316]

@@user-oi6ec8ge4c Maybe you mean...."a"steroids :3

[@user-oi6ec8ge4c]

@@kikijihan8316 boooooooo

[@James-Lee-Smith]

Chuck Nice is probably the most scientifically literate non-scientist on KZbin. And, I agree with whomever commented below that we need more Janna content. She is fantastic.

[@Kube_Dog]

He's the pothole in the road of an interesting discussion.

[@TheRabbitRonin]

1:36 I like when they have animations to show/explain what they're talking about. I wish they would do that more often.

[@shawndorkoff3979]

I never miss a show. Thank you guys for all u do!!!!!

[@StarTalk]

We appreciate you, Shawn! Thank YOU!

[@robelw5287]

Me too. I never miss a show.

[@AlpaOmega-nb5jm]

Well I guess if bull crap is what you like

[@christophero3869]

Jesus Christ, he’s recited his spiel about spaghettification so many times he’s starting to turn it into a poem 🤣

[@jae2883]

We need more cosmic queries!!! Also more Chuck Nice.

[@JasonM69]

Yes

[@mikehoncho8190]

I concor

[@wehttamretrac1609]

🤌👌👏

[@StarTalk]

We can do that. :)

[@mahatma1989]

@@StarTalk asap, thanks.

[@Lee-ng8eq]

Love love love when Janna Levin is on Startalk. An incredibly clever woman. I could listen to NDT, Chuck and Janna forever, probably about any subject!

[@jimmybrungus2552]

Lofi background is a nice touch. Then again lofi goes good with almost anything.

[@MikeJamesMedia]

You had me at "Janna Levin". Please have her on the show more. She's soooooo informative and fun at the same time. And... Somebody please get Chuck a mic that doesn't distort so much. :)

[@austingirdner92]

Love when Jenna comes thru with the physics for the win! Never miss an ep, but love the Jenna explainer shows!

[@dezaraydunigan8028]

This brings me joy. I'm very happy to watch! 💖

[@TheOkieLife]

This is the only science show I can watch without cool graphics and not even once think of changing to the next video. Thank you, from a 7 year fan!

[@erikhendrickson59]

The more I learn about black holes the more fascinating they become!

[@andersonbroxson1755]

i've been waiting for something like this!

[@StarTalk]

Happy to hear that, Anderson!

[@andersonbroxson1755]

@@StarTalk Do questions come from comments or Patreon?

[@StarTalk]

@@andersonbroxson1755 Cosmic Queries are always from our Patreon community (www.patreon.com/startalkradio). Once in a while, we'll ask our Twitter and/or Instagram audience too!

[@andersonbroxson1755]

@@StarTalk Okay good to know thanks!

[@flowahpawah5397]

I hope neil is able to see this, i really hope i am able to meet you sometime! I currently live in Norway, but i would love to come to wherever you live just to learn from you, study your theories and become much more informative on space and time! Love you neil...

[@TheRealLifeMods]

A photon is it's own anti-particle?! Damn that's so cool

[@JJs_playground]

Ya i didn't know that. How does that work?

[@hw_yozoraVODS]

@@JJs_playground something about them being truly neutral particles.

[@TheRealLifeMods]

@@hw_yozoraVODS if anti-matter is considered matter going backwards through time, and a photon experiences all of it's moments instantaneously, what I get from the fact that a photon is an anti-particle is that not only does it conform to causality (A happens before B which happens before C) even though it experiences A, B, and C, at the same instant, but it also works reverse. Since A, B, and C all occur at the same instant, not only does A occur before B but it also is equally true that B occurs before A. At least that's what I gleam from what I already know about this stuff.

[@ip5676]

Don't quote me but I guess that, since they act as waves, two waves of the same frequency but opposite phase would cancel each other out.

[@chikenarch]

The joy I feel every time I see Janna come up in a video 😌

[@ikitclaw7146]

She has the big brain, amazing charisma such passion for her work shes funny and so beautiful! Janna and Triple Chuck are my fave episodes.

[@klaxoncow]

"We're going to take another break" Video ends. Well, this is going to be quite a long ad break.

[@Dsrgreyy]

Lol I’ve done that on stream a few times

[@danrazART]

This is an edited re upload.

[@sapelesteve]

After watching this video, I can strongly relate to Chuck and how he feels! 🤔🤔👍👍

[@lp4352]

1st off.... Thanx Neil and Chuck for reingniting my passion for not just astronomy but science period! 2nd... We need more janna segments! She communicates in a way that shows she really knows her s**t, but puts it in a way that's so understandable! Not just saying that because I have a HUGE "hot for teacher" crush on her lol. #MoreJanna

[@JP1NYC]

Black hole: "It is the human version of the roach motel."

[@99Michaelthom]

So, question: If you were able to traverse near a black hole and move in orbit around it, would you be able to visually see a change as its dust debris disc or whatever may be shifts in perspective? I would imagine the gravitational lensing effect follows your point of view as your position moves, but would you see a visual change the way you might when orbiting Saturn from one pole to another?

[@jajuanrussell5386]

Well well well. I asked the question, "the stuff that goes in a black hole, is it better or worse when it leaves," and here is a really informative explanation in mind blowing fashion. I swyped all that to say thanks to all the people it took to get this video posted today. Thank you. Especially thanks to Neil Tyson and Chuck. Thanks to Chuck for taking the words out of my mouth hours before I even knew this video existed. My reaction matched Chuck's reaction identically 🤣

[@zdeneksolnicka6815]

Thanks for another perfect explanation, could you please cut the MUSIC IN BACKGROUND ? Thanks

[@davidgutnik]

One thing I'd like him to talk about.... Do we actually know what gravity is? We know how it behaves but do we actually know how one object actually effects another object. Like do "graviton" particles exist? Does gravity have a speed effect? Or is there a time delay in its effect?

[@M4nusky]

AFAIK we know a good chunk about it. The warping of spacetime due to mass, the speed (speed of light), The delay (because of said speed). that the spinning of objects wrinkles the spacetime as well since it's not all smooth and instantaneous etc. for graviton not yet but Higgs (for mass) has been around for a while.

[@JKole614]

A StarTalk about Space Lets Gooooooooooo

[@elisabetrouge]

Humans are so unfathomably tiny. I love how we've learned so much. It's just enough to know there's so much we not only don't know but can't know. It's so true it's a rule with a name. My brain gasket was blown a long time ago.

[@righty-o3585]

Yeah, the super massive black hole at the center of the Milky Way, only has a diameter barely as big as the orbit of Mercury, and our ENTIRE solar system compared to the Milky Way is a tiny little pixel. Just a barely visible dot. I mean our entire galaxy is 100 thousand light years across, and the diameter of our solar system out to the orbit of Neptune, is just about 1 light year across. So in other words, the super massive black hole at our center is actually very tiny , relatively speaking.

[@laurapope3685]

This was an awesome video, I learned a lot and it was super entertaining! I look forward to your uploads and can't wait for the next!

[@kirubeltadele6072]

I like this show #1 from youtube very learning and entertaining . I like neil and chack from Ethiopia.

[@hullinstruments]

When you said “surface gravity”… That made a lot of sense to me . Kind of comparing it in my mind to the surface tension of water

[@ThorPalsson]

Oh snap! new Startalk format!

[@kaushik-sarkar-droid]

I already have a playlist of Janna in StarTalk. I like to add more videos on that playlist please 🙂.

[@ananth807]

I only wish schools made science so fun and interesting to little kids as these three people. I am a 45 year old guy with no great science background but gee it makes me feel like I need to go back to uni and learn it the proper way. Kudos to Startalk

[@shaquan9893]

I will never get tired of learning about black holes

[@Seehart]

Question: Consider the set of all spacetime points that are simultaneous with me now (in my reference frame) . That set is a 3-brane in spacetime. Call it "Now". Now is a boundary separating two spacetime regions: past and future. Does that 3-brane "Now" intersect any event horizon of any black hole? If not, what is the formal justification asserting that black holes exist? To be clear, by "exist", I mean "exist now". Note that I am presuming that all of the evidence for black holes is entirely acurate and that the generally accepted model for the phenomenon of black holes is accurate and supported by that evidence. I'm specifically nitpicking at the use of the word "exist", which I take to mean "simultaneous with me now".

[@andypeiffer5]

Great thumbnail btw. I like this new style

[@Tina-d8f]

Excellent work

[@BlackSunCompany]

Not sure if the "wormhole" explanation is the best to use in this case. It would probably be better to at least peer down the rabbit hole of the holographic principle. To summarize as I understand it, since the quantum information cannot be destroyed or otherwise cannot reach the infinite far future (being cut off from our spacetime), it instead remains encoded at the event horizon. Information about a 3D object can be described just on a 2D plane; entanglements between the particles of the object that fell in are lost (since it's smeared across the surface and is decoherent) but the information is preserved. That information at the event horizon can still escape via Hawking radiation - the radiation takes that quantum information away where it either escapes or is recaptured by the black hole where it can escape again. I don't have a fundamental mathematical understanding on this, just a high-level view on the principles, so please correct if I'm wrong or left something out.

[@Robert_McGarry_Poems]

What if... What if they are both describing the same exact thing? Like, the holographic principle is the _phonograph,_ for lack of better ideas, that the Hawking radiation is tuned with when it is created close enough to the event horizon. If it's not close enough, then this effect wouldn't work, the antiparticle falling in doesn't affect it. So, this could be the way to tell. Look for Hawking radiation that forms just outside the event horizon, as opposed to on it. If it's there then no holograph. However, if the idea of protracted infinity as the singularity, was replaced with a quantumly random teleporter, where the information from matter falling in is pushed right back out again as these already tuned Hawking particles, then you solve the problem of needing a holographic membrane. Or they are just two different frameworks for talking about the same thing.

[@kenwoods9503]

Sand clock anyone or do you prefer gears n cogs to run the clock image, the field you read or glass containing the sand only in a natural state and you can't tangibly test blackholes biggest bonkers ever, so do you mean light holographic or holographic matter an exotic matter in the blackholes field?

[@neilkennykenny4113]

Love these 2.

[@synchro-dentally1965]

Does the expansion of spacetime vary depending on the distance from a black hole?

[@wildmanjeff42]

Thank you guys for all the videos--

[@paprikasings]

I’m buying Neil’s latest book this month. I haven’t even got it but I knew it would be worth every penny.

[@chromabotia]

A slick mashup from other Star Talk shows, kinda interesting with high post production values, even a little animation. Neil is the best, but I kinda like the old format. Cheers!

[@clarkgrayhame1250]

That was both funny and very informative. Can't get enough about black holes.

[@rjvalle8094]

On the other side of a black hole is Dr. Tysons amazing collection of things he has in the background of all his star talk videos!

[@prestokrevlar]

What a cool mashup, this is so fun.

[@LeoandLongevity]

Who knew I was looking for poetry on black holes…

[@melchiabban1122]

Pls where can I get an explanation videos made by the lady. I love the way she explains things

[@bhaskardevaghar]

Thanks

[@Azmoth_]

That's a lot. Can I please get some? Thank you!

[@nibussss]

Nic explanation of Hawking radiation

[@HiddenPalm]

Great episode.

[@Geezer-yf8hv]

“It’s even worse than that”! Chuck’s reaction=🤣🤣🤣

[@cinbro3080]

Thank you both. I love this channel.

[@ItzBakeYT]

These videos have came so far.

[@omgIoIwtf]

that really was mind blowing info

[@manfredgedeik3124]

I'm fascinated that they spin so fast. A black hole in the Milky Way, GRS 1915+105, may rotate 1,150 times per second, approaching the theoretical upper limit.

[@FrozenLabRat]

Why does black holes always show us the black, empty part? I mean if it can absorb anything around it, wouldn't it be a sphere of light when we observe it? And can a black hole be hidden in such sphere?

[@Rhekon]

I imagine surface gravity is a convenient term while memorizing formulas in class and discussing massive, large objects. Shouldn't we have a different name for the surface gravity of a black hole? Maybe call it event horizon gravity or something lol

[@roblewis798]

Whoa. I need to digest this... whoa.... ok watching again....

[@shroomzy5000]

Chucks clip @ 2:20 is the best part of this whole video. Possibility of changing my mind is excluded by the uncertainty principle, therefore remains at 0%

[@SentinelGhost]

The thing that always confused me about hawking radiation is that if the information radiated does not originate from inside the black hole, and particles of matter are still falling into the singularly, then how does that cause the black hole to lose mass and evaporate?

[@theduder2617]

I suspect it is due to the energy loss from the spontaneous creation of the escaping particle. (e=mc2) It takes an insanely long time for a black hole to evaporate. If I remember correctly, such a long time that all nearby matter would have long ago been consumed to the point where nothing else is falling in, which finally allows it to evaporate. I have heard that as of today, no black hole has evaporated away, therefore it is only the math talking in regards to the death of a black hole. We may end up making a discovery which renders the math faulty, the same as the math may end up being verified through observation. Personally, I believe the math. But am open to all potential discoveries yet to occur.

[@Denosophem]

The correct answer to every solution is the exact task we are resentful of from the moment the experiment begins

[@preceptorprime2894]

This video is dope.

[@ejmtv3]

6:52 I died at this part! XD

[@parveshkhatri1027]

If the BH steals one particle from 2 popping out of uncertainty, does the mass of BH increases or decreases with time?

[@Robert_McGarry_Poems]

Those are pairs of (matter/antimatter) being pulled apart. The uncertainty is where they will appear. On the event horizon, and the matter can escape, while the antimatter falls in. This removes matter from the BH, and energy from it's system. This energy comes from the mass of the black hole. It causes frame dragging, and this causes quantum mechanics to turn excess energy into (matter/antimatter) particles. So the larger, and faster spinning, the more Hawking radiation. The only thing that makes sense to talk about, from our point of view, is when the antiparticle falls into said BH. The first matter that it touches annihilates it. Making the system a net loss for the BH. Like a particle leaving, which is sort of what's happening. The other way around is like a particle entering, and that would add mass to the BH, annihilate mass outside it, and steal energy from the system. I don't think we observe this happening. Both scenarios seem very counter intuitive. Let's just be thankful that they aren't runaway self perpetuating monsters.

[@DFloyd84]

I think that a black hole's mass does decrease through this process. But since it's occurring at the quantum level and BH's are silly huge, it would take a one-solar-mass BH something like 10^64 years to completely evaporate. The universe is only 1.3x10^9 years old.

[@shanedesilva6307]

I really loved this episode!!

[@thehonorablejiveturkey6068]

Man I tell you this guy is my favorite this guy

[@kevinblandondallatorre5011]

I have a question for you Mr. Tyson. If the revolution speed of earth is determined by the mass sitting inside the orbit, what is the rotation speed of each planet on its axis determined by??

[@josephlawson1796]

Neil has become a pretty good comedian. Also, It's quite an achievement to get Dr, Tyson to use profane language.

[@vincentr90]

Is there any practical use or any use of hawking radiation?

[@yourguard4]

well, you could harvest it for energy

[@notthemessiah9243]

What if particles in a black hole are forced into the quantum layer where they resurface elsewhere as hydrogen which accumulates into stars? Like pushing a floating object under Ice and it popping up out of a different hole

[@degrit1950]

1) The series is great! 2) More Chuck Nice. 3) Just HOW is Dr. Hibbert NOT based on Dr. Tyson?

[@taliachetty5417]

Loveeeeeee!... Startalk be the best ❤️

[@quasar4601]

Thank you !!! For bringing my science knowledge up to a High School level from about a 4th grade one lol Did you know I have 40 pages of personal notes from everyone of your explainers

[@TheFaarf]

40 Pages? Thats dedication, well done! Now I am curious as to what you've written, would be nice to see it :D

[@quasar4601]

@@TheFaarf I just written notes from exactly from the shows Only the explainer ones !! I need to glance at them again lol At the equator : are the days always close to 12 and 12 of day and night. ??

[@guitartrav4299]

Mind completely blown 🤯🤯🤯🤯

[@shivayveer]

hawking radiation question not able to get answers. At event horizon anti particle is created in event horizon and particle outside the mass of the black hole decreases. Same logic can happen if particle is created inside the event horizon and anti particle outside the mass of the black hole will increase. How we are able to say no anti particles created inside the event horizon will be more then particles

[@endeavor44]

Since chuck has a Star Talk with Neil deGrasse Tyson shirt, why doesn't Neil have on a "Star Talk with Chuck Nice" shirt??? We need answers

[@Keytap15]

The original shirt said Star Talk with Neil deGrasse Tyson and Chuck Nice but a black hole stole part of it and what Chuck is wearing now is the result of Hawking Radiation.

[@Dsrgreyy]

@@Keytap15 I see what you did there

[@whatabouttheearth]

Chuck should be on at least every other show!!!

[@DaBlondDude]

Gravity & black holes are illusions? *blinking* that's quite the band-aid. I love Janna Levin episodes; great explanations and cool sense of humour.

[@kenwoods9503]

Blackholes do look like mirages to me or similar to it in terms of light refraction or Rayleigh effect, plus all light that enters the horizon field may be fusing/merging with the core not like normal stars which repel non fuel material to cycle another source, light itself may be a blackholes main diet.

[@anujprasad001]

HI Neil I hope it reaches you... Why is it that we predominantly observe the emission of light and radiation from black holes in the form of a bright, flattened disk (an accretion disk) in two planes perpendicular to each other, rather than perceiving them as uniformly bright celestial objects with darkness inside due to gravitational pull, leading to the expectation of a complete, spherical bright appearance when observed from outside the event horizon? In this scenario, a black hole might just appear like a star from a viewer's perspective because the gravity is same in all direction thus forming "n" number of planes and thus "n" number of accretion disks. The thought is giving me hard time since long time and mainly after I read "A brief history of time".

[@hannieblackthorn5218]

ok, ive got a hypothesis for you supernovas are produced from the rebound of a star falling and hitting its own core what would happen when matter travelling near the speed of light, falling into a black hole from its accretion disk strikes a hypothetical surface and rebounds, interacting with all of the other rebounding matter as well as the magnetic field and the warping of space-time itself? could this rebound "exhaust" be whats channeled through the the magnetic poles into jets? as a sinks stream rebounds off the small opening of a wine bottle?

[@macironiminer9338]

2:19 I remember this in the Halloween regular show special !

[@MasCoffeeTV]

I was curious, what happens when a black hole dies? or Do they last forever? Are they replaced with something else and do they age like the rest of the universe? Love your videos. Bob.

[@jefferyneu3915]

So, now we have to add poet to all of the other amazing things about Dr. Tyson!😱👍

[@jewellcarpenter6764]

Keep on keeping on inspiring and theorizing. #lovestartalk

[@derekb4640]

🙋🏻‍♂️ One question though on the spagettification effect of a human falling into a black hole. Assuming you have ample air and are protected from harmful rays (X, G or otherwise)…as time slows the closer you get to a gravitational force, would an average person die of old age first or spagettification? How long would it take to get to the point of spagettification, quickly due to gravity or years due to the time dilation? 🤔

[@aashwi216]

There is no aging. Time nearly stops or u can say EXTREMELY slows down in a black hole so one doesn't age. Hence dying due to aging isn't possible.

[@kenwoods9503]

@@aashwi216 time and radioactive decay aren't the same last time I checked, like a blackhole is a habitat void of matter I wouldn't say time at least until its tangibly graspable in a experiment, for now let's say decay since humans decay faster in space I'd say yes interstellar movie did show this though its based on habitat how that effects decay I'd say read Superman I dunno decay rate is positive or negative based on environment to my observation of patterns.

[@AnonyMous-nl7ig]

Is there a visible underside to black holes.

[@JimThomasOutdoors]

Is the black hole comprised of atoms that have been collapsed so much that they are no longer atoms but rather just quantum particles ? And did Janna say that quantum entanglement is suspended / separated below the event horizon only to be re-entangled when expelled from the black hole ?

[@ttsuter87]

Ignoring the spaghettification and horrible drawn out death and other physics, if I were to hold a chunk of matter with black hole density, let’s say it’s a 2” sphere, how much would that weigh? I have a 2” ball of pure tungsten, which is one of the denser metals in the periodic table. It weighs a just under 3lb. How much would black hole matter weigh and what would its density be?

[@SmokingCoffee]

I have a question.We are most likely certain that all things have a point of collapse, and so a black hole that consumes everything even light should be getting bigger and bigger until it some ''time'' collapses.Yet we see black holes ruling as the rotation axis/engine of gallaxies and we see nothing radiatiating or coming out of it in any way.We also know that black holes can merge and still not collapse.But since the gravity gets so strong and it curves the space-time so much, can't we suppose that, even if a black hole collapsed and started exposing its devoured particles, relatively quickly if regarded from its theoritical centre, this could be exposed really really later at the age of the universe? Meaning that no black hole in the universe (what we have observed) is old enough to die because there hasn't been much time? Just a thought.

[@gasaholic47]

I’m about halfway through Death by Black Hole. Terrific book.

[@jpteknoman]

here's a question. if the singularity at the center of a black hole had the size of the sun, how much mass would that be and how vast the event horizon would be?

[@john_boy3135]

You should make a video explaining hydrogen wave function