Supermassive black holes: most powerful objects in the universe | Martin Gaskell | TEDxMeritAcademy

Have you ever wondered whether black holes exist? And if so, how do astronomers study them? What would it be like to be close to a black hole? UCSC astrophysicist Dr. Martin Gaskell has spent his career studying what happens around supermassive black holes in the centers of distant galaxies. He explains in simple, everyday language recent progress in understanding what is going on around these extraordinary objects as they eat up matter around them. Martin Gaskell is a researcher in the Department of Astronomy and Astrophysics at UCSC. He has over four decades of experience working on issues related to supermassive black holes (including a Ph.D.), a couple of hundred publications, and many research grants. He was a finalist for five years in a row for top teaching award at the University of Nebraska. Martin also engages in many popular talks to the public. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at www.ted.com/tedx

[@corpsmind5920]

Now that's a teacher. Someone who can teach you 5 different things in one presentation.

[@happycoco2967]

Yes. A TED talk where the speaker is not afraid of losing his audience over formal scientific names, shows actual evidence of the subject and not just meaningless, flashy photos of nice stars and does not try to blow audience mind with phrases like "there's millions and millions of starts! wow! that's incredible isn't it?" NO ITS NOT INCREDIBLE, ITS BASIC KNOWLEGE ABOUT THE UNIVERSE AND I COME TO THIS VIDEOS TO ACTUALLY LEARN STUFF. And with this beautiful talk - I did. Thank you Dr. Martin Gaskell for your amazing talk, your explanations were very approachable and the demonstrations (in the form of photos, videos and the live one with the apple and honey) were as informative as they were entertaining. Hope to see you again on TED or any other platform!

[@K1lostream]

TED organisers take note - get more speakers like this dude, and less of the UV tattoo/Synestia types. He thinks clearly, speaks clearly, and gets his technical points across in an accessible way without dumbing-down, or patronising the audience. My opinion of TED talks is, temporarily at least, restored!

[@gens0kyo]

?

[@twenty-fifth420]

java snip He or she or they are saying that this man speaks clearly compared to other ted talkers who ramble on. Which is subjective but I do agree with OP.

[@twenty-fifth420]

java snip He or she or they are saying that this man speaks clearly compared to other ted talkers who ramble on. Which is subjective but I do agree with OP.

[@danzimbr]

MAN i would LOVE to hang out with this adorable old man and talk about the Universe! Thanks for sharing your knowledge, Mr. Martin Gaskell.

[@johnjohnson6423]

Come join us at the Nebraska Star Party from July 28th to August 2nd, 2019. You will be able to meet Dr. Gaskill. He will be one of our keynote speakers!

[@leslawrenson]

You'd do better to hang out with the likes of Wal Thornhill and Don Scott - proper scientists, who understand exactly how the Cosmos actually works. Check out their work.

[@mikerose51]

I’d take mushrooms with him 🍄💀🤤😳🤪

[@kwicksand12]

You know he’s a great teacher when you’ve watched several videos on the same topic but still had at least 2 or 3 “oh sh*t” moments during his speech.

[@JosieGonzalez]

He’s amazing. The way he explains things thoroughly.

[@paulramirez632]

Yes, he is.

[@javinova2091]

You're amazing babygirl

[@EarthChampion_TophBeifong]

Yes in the beginning I did notice the mouth sounds he was making but I quickly forgot about it when I focused astonishing on the information he was providing, such an interesting talk!

[@mikerose51]

Lol u lien 🤣

[@Galactic_hippie1111]

i love this dude! like the ideal old British professor.

[@peacewalking__]

English*

[@kendomyers]

@@peacewalking__ Is your comment meant to mean that he is not British? And if so, what makes him not British?

[@peacewalking__]

@@kendomyers He himself is British. But he is not THE ideol British professor, he is the 'ideol' English professor stereotype. Scottish and Irish ones are different.

[@kendomyers]

@@peacewalking__ Ah, that... actually makes sense. Agreed. I am curious why only this guy, Dr. Gaskel, has a chorus of people praising his teaching ability... He was involved in a major court case where he was denied a job for being a creationist christian. Hhmmm

[@brettconv83]

Morty Sanchez Interesting, I presume he is entitled to his personal beliefs thought right? And to be denied a job sounds like a loss for the employer

[@eviljedi1496]

I can't even imagine what would happen if all teachers in school / professors in universities would be only half (!) a as good as this guy o_O. Very good explanation technic for understanding complex mechanics.

[@marcusashwell8314]

They are too busy poisoning the minds of kids to be interesting

[@badmintongo4832]

Complex? This is elementary, my dear.

[@MonsieurJarrux]

For the first time I understand why accretion disk are produces heat. Very clear and very interesting.

[@divyamarkande35]

Oh he is definitely on the Ted Stage for a reason! ❤️🙌🙌

[@shrarneomar8080]

Very nice done presentation, Mr. Gaskell! :)

[@fallstar130]

Someone get this poor man a glass of water

[@respwnonme1030]

It's the mic that's in his beard. You heard his beard, lol.

[@coryhoward3801]

it enrages me. nothing angers me more than that noise.

[@jake5952]

That's what I heard too.

[@sharicamonet9675]

@@coryhoward3801 omg me too

[@jasonwhyttes1679]

i didnt hear it until i ventured down to the comment section :D

[@pilisjose]

Wow.... What a fascinating lecture. I would love to assist to this Professor's class, he really knows how to keep you focused in these interesting topics!! Great job TED and thank you very much to Dr. Gaskell for his time.

[@coolthought8456]

Most brilliant explanation of mind boggling objects in a very simple way that make it extremely easy to understand.

[@jeffreystreeter5381]

Excellent presenter. Fascinating. Great job.

[@m0bz0mb39]

Wow! I knew about plasars, quasars, and blazars and how much energy they that can be produce but no one actually explained to me why and how it happens. That was fascinating

[@nfactorial4074]

This gave me ASMR. Awesome talk Martin thank you

[@hasanshirazi9535]

What a great lecture and knowledgeable gentleman.

[@bharathvaj3471]

I liked the way he takes and keeps back av remote inside pocket . Lecture was superb

[@stephentrebble]

Ideal physic professor. Very pleasing to listen too even if one had no interest in said topic.

[@yashasvim1145]

I love such speakers!! Awesome!!

[@mukundswamyya9058]

Yashasvi M who doesn't love old pioneers giving us their gyaan.

[@christophercharlesblack2529]

Excellent talk, great public speaking. Screw the sound quality...this is quality material.

[@mjjumps]

How about a supermassive glass of water

[@peacefulwindsong5270]

Lol, that was funny. 😂

[@joshuahack3231]

Stoned and read this comment got me good

[@blunttime1089]

Deaddd

[@BrianGivensYtube]

I'm pretty sure it's his beard

[@GtheMVP]

haha, first thing I thought 3 seconds in. I just couldn't have stated it so cleverly. This unlistenable, especially with headphones on.

[@alaminmbamba]

Excellent lecture.

[@jaherrick]

These videos should be shown in schools. Much more useful and interesting than science lessons.

[@vantagemove2957]

His way to explain is literally interesting

[@aliakbar307]

Thank you so much sir. May you have a good health and others shall benefit from your wisdom, and knowledge.

[@harikumar5858]

Beautifully explained.

[@Age_of_Apocalypse]

Very, very interesting video: Thank You!

[@MrAbdoo9911]

Thanks, it's really clear seminar

[@arnoldshmitt4969]

HE Explained it very nicely i am impressed well done sir

[@VG-of5yk]

Love it! Very informative. Good 4 ASMR as well.

[@rogeliocamacho8548]

Great conference.

[@nithyapanicker3128]

Great presentation. Thank you

[@Aman-tf8bt]

Thanks sir it was really a nice lecture

[@beautifulcatastrophe]

Awesome.....I love space talks

[@erikq9788]

People will complain about everything. I was soaking in all this knowledge and didn’t even pay attention to the sounds his mouth made. For the love of god can people just stop complaining.

[@vmardian]

Is that a complaint regarding other people?

[@unkleRucker21]

I didnt notice it either they are just trolls who cares what they say.

[@robertjenkins6132]

I didn't even notice any unusual sounds. I guess I am deaf.

[@dave93x]

@@unkleRucker21 we're trolls for pointing something out that's distracting? Mate, I can hear this guy's tongue unstick from the roof of his mouth as he's talking. Not a knock on him or what he's saying. It's just hard to get past it once you hear it.

[@unkleRucker21]

@@dave93x its easy to comment on something so meaningless. When watching this video i dont worry about little hiccups unlike trolls. I just focus instead of worrying about speech impediments. Have you heard of isaac Arthur?

[@clintwolf1557]

Fantastic talk. Thanks.

[@asgeir6420]

Amazing!

[@debashisbanerjee810]

Thanks to Muse I found such nice lecture

[@ayush3929]

nice work sir!!!!

[@praveenkumar2k]

Wonderful explanation

[@mithuraveendran8699]

Nice. Fascinating.

[@sreejithvijaykumar2190]

Very good lecture.

[@poojasabharwal55]

Best professor ever!

[@jkjk-uy1qi]

Best explanation ever

[@riyanath7369]

Well explained.

[@obeace4495]

Just needs a noise gate for that mic. Dudes a smart cookie and loved listening to him

[@thanefalkner6156]

Great video. Finally a astro scientist explains it for lamens like me.

[@gergelyfliegauf5287]

Brilliant! 😌

[@attoblaze3395]

good lecture, very informative

[@tron1007r]

Very well done

[@bhargavanaidu8470]

Thanq professor

[@mat-only]

Amazing dr😎

[@smb7304]

Interesting stuff

[@asokaranjan1844]

Good presentation very interesting.

[@IMN602]

Man i love this guy!

[@ethitlan]

This is definitely gonna help me to get into NASA. Thank you, sir! I'm trying to be respectful.

[@WillOfTheWeb]

Brilliant talk. I found this fascinating. Always thought bl holes consumed everything around them.

[@salmahmohamed6048]

Ah... I learn something new.. :) :) 👍👍👍

[@nigel900]

Very good.

[@jorgepeterbarton]

If we have filmed stars orbiting Sag A... Wont there at some point be one travelling behind it and gravitational lensing effect?

[@NoahS4226]

Hypothetically yes. Or at least that's what I've always imagined. Statistically speaking we should have as much footage of that as we've had of them going in front

[@rahuldalal4763]

Awesome

[@willzhang4117]

Great!

[@fridaqi2810]

admirable

[@abhisheksrivastava7474]

Just so you know I am clapping!

[@lombardo141]

I will never fail his classes. 😧

[@neponsetriver]

He must be a scientist with all those pens, but he forgot to bring his pocket protector. lol

[@samiulbari2233]

Pretty awesome

[@abihakhan3426]

Wowwww what an informative video thank you doctor 🌹💋🌺🇵🇰🇵🇰

[@thesetruths1404]

My best Dr Spock impression... Fascinating. Well done!

[@reddiamond239]

Majestät Berfect teatcher .thank you Gentelman .

[@reddiamond239]

Majestät the center of the univers is the earth. Thank you .

[@DosDonts101]

it all makes sense

[@realdjtoddthunder1323]

I GUESS ITS LIKE ,IF YOU THROW SOMTHING IN SPACE,,,IT WILL KEEP GOING WITH OUT STOPPING UNLES SOMTHING STOPS IT,,,,I GUESS WHEN A SUPER MASSIVE STAR IMPLODES,,,IT GETS STUCK IN A CONTINUOUS IMPLOSION ….JUST AMAZING

[@charlieangkor8649]

There seem to be grooves in the Saturn rings. What would happen if we put the Saturn rings into a record player? Like a supermassive record player? What would it sound like?

[@nicolaikaasgaard7231]

Charlie Angkor that’s the best question I’ve ever heard about Saturns rings😂

[@lordofthewoods]

@ Charlie: White Noise : )

[@TheBoundBowman]

Despacito, probably.

[@antilarge7860]

Now they believe that the center of the milky way is dark matter. Amazing how smart these guys are.

[@jonathanchang1574]

This lecture is such a muse.

[@fahdmasud]

so we see the light from the 'white hot' heat from 3C273 (17:29) but cannot see it but can't see the light in the other capture (10:53)? can someone please explain that to me?

[@guitaristxcore]

Different light spectra being viewed. Also, our galactic nucleus is not going through a period of high activity, so it isnt emitting as brightly as galaxies whose nucleus are more active.

[@christinestill1990]

Oh please, zoom in to what he is talking about if u intend to post online!

[@bhavinibhatti8598]

best proffesuional

[@3094usmc]

So what happens after 2002????

[@Four_Eyes]

Killed it.

[@mikebarnes7441]

I hate hate HATE the most sound of peoples mouths when they speak. This is so noticable in almost all TED talks and I can't unhear it. Somebody please help!

[@KiraIsGod]

What you have is most likely misophonia.

[@mikebarnes7441]

@@KiraIsGod that's probably it lol

[@KiraIsGod]

@@mikebarnes7441 I have it too, dw, you're not alone.

[@NoahS4226]

It's his beard rubbing on the mic

[@clintclintclint]

I wish the microphone wasn't so close to his mouth so I wouldn't have to listen to sound of his lips and tongue making that suction and smacking noise that sounds like someone is eating with their mouth open. Loved the lecture though! Absolutely fascinating.

[@brettelliott4116]

Clint Lewis your wish is granted my milk drinking friend. You now have two wishes left. Use them wisely.

[@herglawrmr33]

Lol

[@herglawrmr33]

@@brettelliott4116 my wish is for 1 single glass of delicious whole milk to go with my peanut butter sandwich. That is my only wish, not world peace - just milk in my mouth

[@tamashumi7961]

Agreed, is it not his beard hair scratching over the mic though?

[@spriggan9999]

It sounds like someone is working with wet clay. Clayground Fan 69. Links Disease. He has it. Mourn.

[@factfinder4051]

I want you to be my teacher!

[@nickbishop959]

The squishy noise is actually the microphone rubbing against his beard as you can see in 3:15

[@nickshine5982]

*Muse Intensifies*

[@jj-iu3ni]

Spin a penny on the floor Open the door Spin another penny on the door Place magnet in the middle You have created a warp drive Just need dark matter

[@ptrkmr]

I’m sorry but what? That was way too vague.

[@jj-iu3ni]

@@ptrkmr The realms of undiscovered science is vague.

[@ptrkmr]

@@jj-iu3ni Doesn't mean you shouldn't speak concise lol

[@jj-iu3ni]

@@ptrkmr ok I don't anymore what

[@kbbeats3099]

@@jj-iu3ni where are you from? If English isn't your first language, type in your native tongue, and we can just hit translate.

[@ptrkmr]

Could a secretion disk kick off basic fusion due to the same friction-like principles at extremely high velocities with the right composition and difference in velocity?

[@Involent]

Accretion disc*

[@NoahS4226]

Accretion disk* and what kind of composition did you have in mind cuz I'm not sure

[@shahzadaslam384]

I wish this man was my father :) he would have amazed me very day

[@MrEnjoivolcom1]

His subtle yet amplified oral sounds are like ASMR!

[@NoEgg4u]

@16:39 He did not say "Simon Says".

[@obraiaobservador]

Very nice apresentation. I'm brazilian and live near the dam that him talked about.

[@lateladipenelope]

We don't give a dam

[@theplayer2545]

Came for the Knowledge Stayed for the Wise old man Didn't come for the Lip snacking ASMR ..I wanted to relax and learn not sleep

[@oswellplieades8495]

Luckily I was able to turn my audio down so that the quieter frequencies can be gated out. Now his voice sounds less crackly

[@versesquared4945]

Can antimatter fall into a blackhole ? Could that account for the missing stuff?

[@guitaristxcore]

Yes. No.

[@lordofthewoods]

@ Verse: Are you kidding??? The Universe would blow a head gasket!

[@johnernst8718]

Those two arcs have two totally different centers

[@milanpintar]

large amounts of matter slow down time because the universe can’t process that much information at once, it’s overloaded.

[@ugochukwuudeh6625]

Milan Pintar yup, we are definitely living in a simulation

[@milanpintar]

@@ugochukwuudeh6625 For sure

[@lordofthewoods]

@ Milan: So why doesn't someone add more RAM? I have some here...