The End of the Universe - with Geraint Lewis

2024 ж. 14 Мам.
2 059 858 Рет қаралды

Come with us on a very final journey as we wander forwards in time at breakneck speeds to see what happens at the very end of the universe.
Subscribe for regular science videos: bit.ly/RiSubscRibe
Geraint's book "A Fortunate Universe: Life in a Finely Tuned Cosmos" is available to buy now: geni.us/CUaq
Will there forever be stars in the sky? Will humanity roam the cosmos for eternity? What does the future hold for our Universe? This is a journey through space and time, from galactic collisions and hyperactive black holes, on to the death of the last star.
Watch the Q&A: • Q&A: The End of the Un...
Geraint F. Lewis is a Welsh astrophysicist at the University of Sydney. He's best known for his work on dark energy, gravitational lensing and galactic cannibalism. He also has a cool KZhead channel: / @alaslewisandbarnes
This talk and Q&A was filmed in the Ri on 24 July 2018.
---
A very special thank you to our Patreon supporters who help make these videos happen, especially:
Alessandro Mecca, Ashok Bommisetti, Avrahaim Chein, bestape, Elizabeth Greasley, Greg Nagel, Lester Su, Manish Upmanyu, Rebecca Pan, Robert D Finrock and Will Knott.
---
The Ri is on Patreon: / theroyalinstitution
and Twitter: / ri_science
and Facebook: / royalinstitution
and Tumblr: / ri-science
Our editorial policy: www.rigb.org/home/editorial-po...
Subscribe for the latest science videos: bit.ly/RiNewsletter
Product links on this page may be affiliate links which means it won't cost you any extra but we may earn a small commission if you decide to purchase through the link.

Пікірлер
  • Thanks to the generous support of our Patreon friends, we now have English language subtitles for this video! If you too appreciate what we do and have the means, please consider joining our community of supporters: www.patreon.com/TheRoyalInstitution

    @TheRoyalInstitution@TheRoyalInstitution5 жыл бұрын
    • 00000000

      @liverunnin@liverunnin5 жыл бұрын
    • 000p

      @liverunnin@liverunnin5 жыл бұрын
    • liverunnin

      @stevelondon659@stevelondon6595 жыл бұрын
    • liverunninG has

      @herbross5930@herbross59304 жыл бұрын
    • Yeah that’s what part did she do

      @youngkellenneverbrokeagain9136@youngkellenneverbrokeagain91364 жыл бұрын
  • Oh, and Ri, since my kids were little, we've been listening to all these wonderful Ri talks, and now they are teenagers, and still like them, as do I

    @Saleemsan@Saleemsan4 жыл бұрын
    • Glad to hear you and your family are enjoying them so much, Mark!

      @TheRoyalInstitution@TheRoyalInstitution4 жыл бұрын
    • I know. I'd much rather watch one of these or a lecture from elsewhere of an evening, instead of the trash that passes for 'prime-time' TV these days.

      @reddevil9554@reddevil9554 Жыл бұрын
  • I was asleep and this video appeared on my list and I gave it a Play ... I enjoyed every second and now I can't sleep. I think of everything Mr. Geraint Lewis said ! I learned a lot tonight. Thank you very much !

    @huhuruz77@huhuruz772 жыл бұрын
  • This one is so good, my favorite so far. I will actually watch this one more than once.

    @brianhubis3988@brianhubis39884 жыл бұрын
  • To everyone who enjoyed this lecture and doesn't know about Geraint Lewis' and Luke Barnes' youtube channel Alas Lewis & Barnes, I'd highly recommend it for anyone interested in cosmology, good stuff!

    @tappajavittu@tappajavittu5 жыл бұрын
    • Ah, good shout, we'll add a link to the description!

      @TheRoyalInstitution@TheRoyalInstitution5 жыл бұрын
    • Feels like good advice. I've taken it!

      @markiliff@markiliff4 жыл бұрын
    • Cheers, I didn't know about this!

      @BeckBeckGo@BeckBeckGo3 жыл бұрын
    • Thank you for the information. Just subbed....

      @fukemnukem1525@fukemnukem15252 жыл бұрын
  • beautifully communicated, I enjoyed this lecture very much!! Thanks to the RI for putting on these lectures, and thank you to Geraint Lewis for a great talk!

    @88pampa@88pampa5 жыл бұрын
    • Great comment.

      @perrynnlynch1883@perrynnlynch18834 жыл бұрын
    • @@perrynnlynch1883 to home depot for bbl KBB in operation NJ BH j hi Jennifer BH bbl j BB BH BBC is hi

      @ManasJha31@ManasJha313 жыл бұрын
  • This was so encouraging. Finally I got the assurance that I needed that eventually all my enemies will be dead and I won’t have to ever pay taxes again or listen to politicians give non-answers to the people that they were hired to represent. Ahhhh! Peace at last.

    @boxelder9167@boxelder91673 жыл бұрын
    • 😊😊❤

      @zerototalenergy150@zerototalenergy1502 жыл бұрын
    • Ah yes. No more horrendously wasted energy over petty squabbling, and all other forms of verbal human excrement. Eating and defecating have more purpose than that.

      @gravityrules@gravityrules2 жыл бұрын
    • Inane comment

      @anthonyvincent5892@anthonyvincent58922 жыл бұрын
    • @@anthonyvincent5892 - Satire may not be your thing but you can always try living a fuller life by getting in touch with your inner curmudgeon and reigniting your gift of hubris to share with others.

      @boxelder9167@boxelder91672 жыл бұрын
    • You do realise that your taxes pay for the wages of researchers like this presenter? In fact over 95% of innovation and invention are initially funded by the tax payer. The internet itself is a product of tax payer funding. Even the first algorithm used by Google. These innovations are then handed over to corporations for exploitation and commercialisation. The list is long. You could mount the case that corporate profits are a form of taxation. They are generated by corporations adding on an amount to the purchase price you paid. So why are taxes so disgusting to you and corporate profits not mentioned? You nay need to apologise my friend

      @PetraKann@PetraKann Жыл бұрын
  • I can't get enough of these intellectual conversations, it's the one thing that actually stimulates my mind and gets my neurotransmitters pumping. Thank you guys.

    @Dss-bm3rz@Dss-bm3rz4 жыл бұрын
    • It’s non-science mumbo jumbo.

      @greggstrasser5791@greggstrasser57912 жыл бұрын
  • It hurt me each time they didn’t laugh at his little jokes lol

    @bigpompano1659@bigpompano16592 жыл бұрын
    • They would've, surely; just no mics to pick it up.

      @Jemppu@Jemppu2 жыл бұрын
  • Never tire of these talks, Thank you.

    @maximuscomfort@maximuscomfort4 жыл бұрын
    • My pleasure

      @whirledpeas3477@whirledpeas34773 жыл бұрын
    • You ain't going no where like 4 flat tires

      @pullingthestrings5233@pullingthestrings52333 жыл бұрын
  • not just gorgeous ( a real silver fox!), not just gorgeous AND intelligent, not just gorgeous, intelligent AND a superb communicator - but gorgeous, intelligent, a superb communicator, AND Welsh! A quadruple whammy....what a joy to find this series.

    @vin2216@vin22165 жыл бұрын
    • What a nice compiment, vivienne.

      @82luft49@82luft495 жыл бұрын
    • And I mean every word. If I could just meet a guy like this!😍

      @vin2216@vin22165 жыл бұрын
    • White anglosphere western civilization privileged men are to be shunned and blamed for all ills of the world. Especially if they are cisgender. Do try to keep up.

      @HAL-nt6vy@HAL-nt6vy5 жыл бұрын
  • So glad the audience wasn't interrupting Mr. Lewis' presentation. They were actually listening to him and the concepts he presented. The Douglas Adams line was a great thought provoking ending. I loved this presentation and the speaker.

    @afterthedrjay@afterthedrjay5 жыл бұрын
  • Being an enthusiast since the age of 6 and now watching this, makes me want to leave my digital marketing job and study cosmology full-time. I wish life were that easy.

    @rahulgosavi7682@rahulgosavi7682 Жыл бұрын
  • Brilliant lecture. Thank you RI!

    @eskileriksson4457@eskileriksson44575 жыл бұрын
  • So well-spoken and a pleasant conveyance of complicated information, with great graphics.

    @davidsavage6227@davidsavage62272 жыл бұрын
  • Why haven't I heard of Lewis before?! This was beautifully clear, nicely constructed and delivered with just the right amount of dry humour. Oh, and I read Black Cloud 50 years ago and hadn't thought about it until last week. Now here it is again. Miraculous.

    @markiliff@markiliff4 жыл бұрын
    • shame I couldn't hear the audience reactions so I knew when to laugh.

      @Lisa-im6hy@Lisa-im6hy2 жыл бұрын
    • @@Lisa-im6hy lol moo o moo o

      @tombednar8218@tombednar8218 Жыл бұрын
    • No

      @macysondheim@macysondheim Жыл бұрын
    • I wish I heard him before, he is a wonderful communicator, authentic, clear, no-nonsense, smart,

      @letitsnow8518@letitsnow85188 ай бұрын
  • Great stuff. Loved every minute of this!

    @matingarastudios@matingarastudios4 жыл бұрын
  • outstanding lecture. I have learnt so much from this guy in the last hour than I did all the way through school. wow I actually feel more clever than I did an hour ago :)

    @dadsmidnightcreation6794@dadsmidnightcreation67942 жыл бұрын
    • Me too 😂

      @eboytc@eboytc Жыл бұрын
  • I'm reminded of the Peter Cook line. "Still, there is hope. I hope this will not happen."

    @danielschaeffer1294@danielschaeffer12944 жыл бұрын
  • Fantastica,this by far the most priceless video about the universe ,explicit and greatly widened my scope of the heavens. Well done.

    @aragti6060@aragti60603 жыл бұрын
  • Fascinating lecture - thoroughly enjoyed listening to it. Geraint really held my attention from beginning to end.

    @DS-fk7ed@DS-fk7ed3 жыл бұрын
  • Thank you Geraint Lewis for expressing ideas that I have had myself, & you express them with such clarity & give me so much by doing that. The final theme suggesting that it could be that the big bang has all happened before & could be a recurring moment in an overall universal "tiem-line" going on forever is one that I have been going on about to my friends for decades. They go "whatever". But it makes a lot of sense to me, although many will expect any expression relating to it to be accompanied by the scientific opt-out "we just don't know". Recently I have been listening to other addresses in this TRI series & in doing so a thought crossed my mind (mainly when listening to David Tong on field theory, which is given more definition by Harry Cliff's address on the Higgs boson) that there may well be, in this new strong acceptable/accepted definition of fields, an underlying explanation of Hubble's continuous expansion of the universe that you refer to that might just bring it all together. I am not a scientist & so not in a position to express this idea in any acceptable scientific form, & it may make little sense to those working in physics but 'll express it anyway. Who knows, there may be some benefit in doing that. It goes like this: There is only one independent force in the universe, the force of gravity. The rest are dependent forces, dependent upon the big bang. The energy available to be played out in the "life" of the universe that you describe, all exists at the moment of the big bang. Tong & Cliff give us the Standard Model. This is suggesting that the cosmic energy field is what exists after the whole thing settles down, and what you are left with, what is left over after matter versus antimatter has annihilated itself, the subsequent electromagnetic forces, the strong nuclear force, the weak nuclear force, the Higgs field that gives rise to mass, electrons, protons, etc. energy itself is there as a temporary adjustment to the failure of matter to completely be annihilated by antimatter. Harry Cliff showed us a picture of "what the universe should look like" applying the Standard Model and it looks extremely similar if not identical to the "end of the universe" you describe, the only difference being space and time. If it were possible to have a "clean annihilation" in the first few hundred thousand years after the big bang, he says, that's what it would look like. So the clouds, the galaxies, the suns, the planets, etc. are simply an expression of the uncertainty principle, proven to be correct by elements making up the background radiation in Tong's talk, not long after the big bang, that such a clean annihilation is never gunna happen. The universe is simply an expression of that; what is left over is fundamentally unstable; energy is the movement from "unstable" in the present to "stable" in the end of time that you describe. The process you describe, which is a picture of the "life" of the universe along the way, gives Cliff what he is hanging out for, "in the end". The "fields" described by Tong & Cliff are created by that process of movement from unstable to nothing. The uncertainty, the instability, the energy, "creating the fields", is responsible for everything in the universe, except for the force of gravity. It is responsible for the gas, the particles, their separation, the clustering you describe, their creation of suns, of galaxies, their burning, hydrogen, helium, their emission, photons, for their turning into red giants, into dwarfs, for dark matter, for the expansion of the universe, everything, You describe clearly the "end of life". But when the "life" of the universe has ended, what are we left with? You seem to be describing everything moving away from everything else at the speed of light, dark energy, the force of repulsion, is now everything, and it is also nothing because there is nothing to repulse. Because the big bang exists, the universe only exists because of the expansion of the universe. Take that away and everything is turning in on itself. When dark energy is universal, the expansion is ended, the only force available is the force of gravity. This means that the disarray within the repulsion caused by the history of the universe leads to clusterfuck, the clustering of dead/dark matter. The force of gravity may be weak, but it is the only force in the end. It brings all this matter back together again, setting up the ideal conditions for another big bang. Because we see no evidence for the creation of the universe, & because the universe exists at all, we know that the big bangs have been happening forever. And because of this, we know that the idea that a big bang at some "tiem" in the future will lead to complete annihilation is a nonsensical idea. It could happen, but because uncertainty has reigned supreme, forever, up until the present, it is highly unlikely in the future.

    @steveirons1@steveirons15 жыл бұрын
    • No.

      @macysondheim@macysondheim Жыл бұрын
  • TL; TD; we’re doooomed! Doooomed I say!!! Wonderful presentation.

    @pspicer777@pspicer7775 жыл бұрын
  • One of the most fascinating and stimulating presentations I have seen. It will be survival of the fittest for sure in the end.

    @sj5669@sj56694 жыл бұрын
  • it's hypnotic listening to this lecture and also imagining what's being described. awesome lecture.

    @josephchoi4138@josephchoi41384 жыл бұрын
    • I waited in vain to hear about the nature of the universe after the end of time.

      @FJB_The_BigGuy@FJB_The_BigGuy2 жыл бұрын
  • I wish my college astronomy class was this informative.

    @SoundsOfSushi@SoundsOfSushi3 жыл бұрын
    • Yes. All the math and rigor emphasized in an academic setting can mask the actual fascinating aspects of a subject.

      @chudleyflusher748@chudleyflusher7482 жыл бұрын
  • Very very interesting! Thank you for sharing this. Truly enjoyed.

    @alphonsejanulis3165@alphonsejanulis31654 жыл бұрын
  • Thank you so much for your information. I agree with you on all topics. And to not panic we will get through this together.

    @barbarajmartin6218@barbarajmartin62184 жыл бұрын
  • came upon this channel by accident! omg im so lucky i DID! im addicted to these

    @RealSasquatchWatch@RealSasquatchWatch2 жыл бұрын
  • What an amazing lecture that really puts everything into perspective I appreciate this presenter

    @kevinstrattonmusic@kevinstrattonmusic4 жыл бұрын
    • This ain't the place for you.

      @pullingthestrings5233@pullingthestrings52333 жыл бұрын
  • I wasn't worried about what I'm what I was going to do ten billion years from now till I watched this show.

    @davidbrown8303@davidbrown83034 жыл бұрын
    • Oh the absurdity.

      @evfich@evfich3 жыл бұрын
  • Never stop learning, these lectures are so incredible

    @1992corvette1@1992corvette13 жыл бұрын
    • Didn't you learn anything from this? All the info you seek will eventually be lost so there's no point.

      @pullingthestrings5233@pullingthestrings52333 жыл бұрын
  • I love these enlightened educational master pieces!

    @MathPhilosophyLab@MathPhilosophyLab4 жыл бұрын
  • Beautiful presentations and so educational so thought provoking. So easy to accept that we are wasteful organic stuff and we need to learn that there is an end to us, like the dinosaurs, extinction is a cue and we are in that line up. We aren't doing nearly enough if at all, to sustain life today, what makes us think the current excelleration of devastation and climate change isn't pointing to a much earlier end than presented here ?

    @VIsTheMusic@VIsTheMusic2 жыл бұрын
  • A truly fascinating lecture that explains cosmology so that us mere mortals can understand.

    @theraven6836@theraven68362 жыл бұрын
  • He is a great communicator!

    @letitsnow8518@letitsnow85188 ай бұрын
  • This very interesting! I loved it!

    @MrN0tim3@MrN0tim34 жыл бұрын
  • Outstanding ability to simplify hard concepts to laymen and superb flow of ideas to maintain the interest of the audience. I very much enjoyed the talk and will watch it again to understand "a brief history of time". Many thanks and appreciation. I hope many young children watch these videos to have more great scientist like you.

    @zuhairgasem5861@zuhairgasem58613 жыл бұрын
  • Thank you for a very clear presentation, Dr. Lewis. What i find most fascinating about this lecture - and humans in general - is this incessant fascination with propagation of life. If all life-forms were to end at some point in the future, there's nothing bad with that. Whatever is there is always there.

    @LL-nw6cd@LL-nw6cd2 жыл бұрын
    • You don't need to say if because you are 100% sure you will end at some point.

      @MrManny075@MrManny075 Жыл бұрын
  • Glad to find this treasure. I often listen to Prof. Lewis on Aussie podcast Shirtloads of Science with Dr. Karl. Always informative and always fun too.

    @gedsoft3793@gedsoft37932 жыл бұрын
    • Let’s take it a couple notches back w/ the profanity.

      @macysondheim@macysondheim Жыл бұрын
  • Thank you for posting this, an excellent presentation! This is one of my favourite subjects as it really resonates with the human condition and wonder, what are we supposed to do with our time here? I think it is quite safe to say that either one accepts that whatever we do "here" doesn't really matter that much because of what was presented here, or one states that the only meaningful thing to aim for is to at least try to go as far as we can in this puzzle that is the Universe. Which would basically mean going forward on Kardashev scale and just try work out the physics until we truly understand everything there is. Whichever way we go, i think most of the stuff we humans spend our time and effort currently on which is basically more or less tribal warfare and squabbles regarding who gets what back from somebody else who took the stuff back in the day and eventually will lose it again is something we should just stop. We are acting like a spoiled brat and we should grow up, because there is the heat death of the Universe that awaits us.

    @celestialaeonproject@celestialaeonproject4 жыл бұрын
    • No.

      @macysondheim@macysondheim Жыл бұрын
  • I learned something today.All what he says may happen or ...not. Conclusion? Don't worry, be happy.

    @mastertechnician3372@mastertechnician33724 жыл бұрын
  • “ It’s tough to see intelligent life here, but there is life”…… That sentence is the most accurate thing he said the entire talk.

    @IB4UUB4ME@IB4UUB4ME2 жыл бұрын
    • Yeah 😂, and no one from audience laughed to my surprise. Also one more statement along the lines... "It would take few billion years for humans to understand or come to the point that we need to move out to other stars/galaxies."

      @RahulKumar-ud6zh@RahulKumar-ud6zh Жыл бұрын
  • This is an awesome video. One of the very best

    @mattgraves3709@mattgraves3709 Жыл бұрын
  • the audience is like a cold, dead universe.

    @jpmorgan187@jpmorgan1875 жыл бұрын
    • They're not that bad. We just have really great directional microphones that mainly pick up the voice of the speaker. We're actually thinking about maybe installing a few ambience mics across the room that we could fade in when there is a reaction from the audience.

      @TheRoyalInstitution@TheRoyalInstitution5 жыл бұрын
    • I think that would be nice to hear a little feedback from the audience.

      @jpmorgan187@jpmorgan1875 жыл бұрын
    • The Q&A was much livelier, maybe the audience was just hooked.

      @hvbris_@hvbris_5 жыл бұрын
    • GOOD!!!

      @sherlockholmeslives.1605@sherlockholmeslives.16055 жыл бұрын
    • I was in the audience. Maybe I should have whooped a few times.

      @leematthews6812@leematthews68125 жыл бұрын
  • What a cruel way to find out the Douglas Adams has passed on. I have always had the impression the all people will cary on living with their friends, family and loved ones, somewhere and sometime, forever another place another time.

    @vanhetgoor@vanhetgoor3 жыл бұрын
  • Great thing about the end of time is that you can never be late again.

    @666BIGBLOCK@666BIGBLOCK2 жыл бұрын
  • Thank you Dr. Lewis.

    @Raphael_NYC@Raphael_NYC5 жыл бұрын
  • Though I know we are limited as human beings, I've always cooled my head with thinking to space exploration as a way to indefinitely extend our life as specie. Admitting we are a fainting pixel of a screen that is slowly turning black is a though one. At least I hope the electronic beings following us will read this post and pay a microsecond of silence to their creators.

    @bimbumbamdolievori@bimbumbamdolievori5 жыл бұрын
  • PLEASE, give the viewer enough time to view the graphics! We don't need to watch every single gesticulation of the speaker. All we need is to clearly hear each and every word they utter. We accomplish this with our ears, not with our eyes. If we must watch every single second of the speaker waving their arms about, then place them in a small window, while the graphic takes up the vast majority of the screen. Thank. You.

    @bradstephan7886@bradstephan78865 жыл бұрын
    • He waves his arms about more than an Italian. Andy England 😉

      @andrewdaley3081@andrewdaley30815 жыл бұрын
    • Rewind and pause are your friends.

      @outsidethepyramid@outsidethepyramid4 жыл бұрын
    • If only there were a way to stop the video or go back...

      @teejay818@teejay8184 жыл бұрын
    • Brad Stephan would that make it believable?

      @danloftus9416@danloftus94164 жыл бұрын
    • There is a pause button you know 😕

      @adamschannel8685@adamschannel86854 жыл бұрын
  • Very impressed with this video. I have always been interested in astronomy and physics. It was things like this that drove me to enter those professions. Thank you for feeding my insatiable curiosity about the universe and the wonders that we discove

    @PlanetXMysteries-pj9nm@PlanetXMysteries-pj9nm5 ай бұрын
  • One of the best channels I ever discovered..

    @kanwaljeetkaur984@kanwaljeetkaur9843 жыл бұрын
    • If you're a metaphysical or some religious person.

      @Thebigbangisdeadgetoverit@Thebigbangisdeadgetoverit3 жыл бұрын
  • Incredible lecture professor, thank you!

    @climbeverest@climbeverest5 жыл бұрын
  • Great lecture. Brings Isaac Asimov's The Last Question to mind

    @jimmywhite4025@jimmywhite40255 жыл бұрын
  • You should make your lectures live for people who want to ask questions but can’t come , btw love your lectures👍🏻

    @noamchai5764@noamchai57645 жыл бұрын
    • Thanks, that's lovely to hear! We'd very much like to live stream at least some of our events but we haven't yet found a way of making it so it's both up to our standards as well as financially viable. Bur we're working on it! We do have something really, really special planned for early next year and if we can pull it off? The world's our oyster.

      @TheRoyalInstitution@TheRoyalInstitution5 жыл бұрын
  • We'll never see it but we can all have fun thinking about it. Thank you very much.

    @toni4729@toni47292 жыл бұрын
  • I think the universe is full of life and hopefully, there are planets with smarter beings

    @robertberger8981@robertberger89815 жыл бұрын
    • Grow up Robert, you are an idiot. Bendy water...?? No curvature....!! Planets....??? AHAHAHHHAHAHAHAHA!!

      @richardichard4237@richardichard42375 жыл бұрын
    • Why are flatturds allowed out? They belong out of harms way in secure facilities. For their sake and everyone else.

      @PifflePrattle@PifflePrattle4 жыл бұрын
    • Or at the very least, beings that know how to use punctuation. 🤷🏽‍♂️

      @deathwrenchcustom@deathwrenchcustom4 жыл бұрын
    • ​@@richardichard4237 both scenarios are equally terrifying and in any case we are the experiment and will continue to be their guinea pigs which makes me feel strange, uncomfortable and above all confused and angry like what the fck is going on anyone would tell us the truth in this life please if possible or maybe in the next and why this is happening if we are on the only available hard place in our Universe where we can live and thrive in the same time and that's our Earth which is now it has to be more like some kind of a realm much more than it has to be a planet or some kind of machine where we are protected by someone who we call God or by many of them Gods, but unfortunately we can't leave this place. The other possibility is not really claustrophobic like the first one and it means that we can travel through our solar system which is great already and when we grow up little bit more and we are prepared capable and ready we can travel inside and through our Universe also or we can stand firmly in one place in space and the Universe itself will travel for us instead. Here would be the same story like in the first case where obviously we are again product and creation of a highly intelligent creator or creators maybe a pure conciseness only because now we already know that our brain is materialistic but our mind and what was going on inside actually is not materialistic so anyway because our mind is finite also we can't imagine understand and comprehend some infinite things like our Universe and our God, strange a the truth would be stranger than fiction at the end but i really hope we are going to be told the truth

      @pucka_ak47@pucka_ak473 жыл бұрын
    • @@pucka_ak47 so long as their is life here, there will be life in the universe whether there isn't life already, life will evolve the same way organic matter came to be on earth and developed is the same way it could happen elsewhere it could even be organic matter from here. What really blows my mind is people forget that time and space is relative. Meaning for earth maybe 4 billion years have passed. However what about a planet where time is moving at 200 times our time. They don't have needed billions of years to evolve, a million will do for them, so out of all the billions of planets there's not one more advanced? Another interesting thing is even if their is intelligent life there is a huge space and time barrier. Read the three body problem one of the best books iv read blew my mind.

      @HomoSapienMan@HomoSapienMan3 жыл бұрын
  • 46:45 "The scale of a cathedral" is even a gross underestimate. An Atom has about 10^-10) m, the core has about 10^(-15) m. A fly is about 1cm, so compared to the scale of a fly the atom would be about 1 km. The scale of a cathedral is about 100 m.

    @rfvtgbzhn@rfvtgbzhn4 жыл бұрын
    • You're confusing distance with volume. When using a cathedral as reference, of course he was talking volume, which exponentially compares, not linearly. Atomic volume doesn't even have an "about" size, since they varies in insane amounts, so it would be absolutely silly to even consider it.

      @Atlas_Redux@Atlas_Redux4 жыл бұрын
  • Wonderful talk. Thanks Geraint Lewis and thanks TRI

    @eulogionavarro6935@eulogionavarro69352 жыл бұрын
  • It can get kind of repetitive that all of these kinds of talks have to go through the very basics of cosmology for the first half an hour or so once you have watched enough of them, but in the end, this is a very fascinating talk and some very interesting ideas to think about! (I make science videos too if anyone is interested!)

    @ThinkHuman@ThinkHuman5 жыл бұрын
  • Every time they 51:30 when they talk about the end of the universe puts in in a good mood. LoL (not really)

    @CV_CA@CV_CA4 жыл бұрын
  • The part at the end with the earth in 7 billion years scorched followed by the clapping was quite comical.

    @smiley235@smiley2355 жыл бұрын
    • It has become quite fashionable with thoughts like "nature/cosmos would be much better off without intelligent life", the universe not being aware of itself in the form of conciousness = an ultimate meaninglessness.

      @Music_Creativity_Science@Music_Creativity_Science5 жыл бұрын
    • Talents, young artists, music charts I have thought the same thing, if nothing is conscience of it, just a lot of stuff happening autonomously by the laws of physics till the end of time, a truly bizarre notion.

      @smiley235@smiley2355 жыл бұрын
  • Amazing -- great presentation

    @eurostyle83@eurostyle834 жыл бұрын
  • That was an amazing journey!

    @BrHck@BrHck3 жыл бұрын
  • #3767 I remember commenting on this in 2029 (pre-singularity)

    @kaellum4260@kaellum42605 жыл бұрын
    • What we now call "pretubement" was discovered in 2039, so you're ten years ahead! Or behind?

      @ankeunruh7364@ankeunruh73644 жыл бұрын
  • A generally interesting talk. It would have been much stronger however if some uncertainty (or more, actually) was expressed. To fill that missing 'talk matter' I include this quote from the Wikipedia article on the "Ultimate fate of the universe": "Cosmic uncertainty[edit] Each possibility described so far is based on a very simple form for the dark energy equation of state. But as the name is meant to imply, very little is currently known about the physics of dark energy. If the theory of inflation is true, the universe went through an episode dominated by a different form of dark energy in the first moments of the Big Bang; but inflation ended, indicating an equation of state far more complex than those assumed so far for present-day dark energy. It is possible that the dark energy equation of state could change again resulting in an event that would have consequences which are extremely difficult to predict or parametrize. As the nature of dark energy and dark matter remain enigmatic, even hypothetical, the possibilities surrounding their coming role in the universe are currently unknown."

    @simian_essence@simian_essence5 жыл бұрын
  • Simple but informative thank u professor.

    @mooncheese2495@mooncheese24953 жыл бұрын
  • Crystal clear and informative. Loved it! 🍺

    @LivingInCloud1@LivingInCloud12 жыл бұрын
  • Now 74, I am at the ends days. I'm going to miss life.

    @82luft49@82luft495 жыл бұрын
    • @@hayato4574 Thanks. Now I feel so much better.

      @82luft49@82luft495 жыл бұрын
    • My friend, Jesus says that when our body die, we enter into TRUE LIFE. please read the gospel of John. Ask Jesus to reveal himself to you. He will fill the rest of your life with joy and then he will come for you and give you eternal life with him. He promises joy and peace forever more. I will pray for you my friend. 😊

      @rexjesus5058@rexjesus50585 жыл бұрын
    • My brother at Rex Jesus has spoken well! It is great advice for you now at this time!

      @rambido@rambido5 жыл бұрын
    • Luft you won't miss it, being dead and deaggregated... But those of us still around can remember you for a while yet and miss you. And maybe you still have some years to go, and can see a bit more of the world, and make a few more people happy along the way, nudge a few of us youngsters away from some stupid or harmful decisions. Just maybe. 😁

      @artosbear@artosbear5 жыл бұрын
    • Your ride ain't over buddy!! Its just starting! Hold on for the ride, enjoy.

      @prettyplayfull@prettyplayfull5 жыл бұрын
  • Wonderful story Mr. Lewis and especially as you wind up in quotes from Douglas Adams. Cheers and see you in the next Universe.

    @stevedowler2366@stevedowler2366 Жыл бұрын
  • Thanks for the update

    @davemckay4359@davemckay43594 жыл бұрын
  • Humans: Yay have trillions of years to evolve into something awesome. Nothing can stop us now! Conronavirus: Hold my crown.

    @princejones0077@princejones00774 жыл бұрын
    • Remember you're more likely to die from the influenza. Don't look at the rubber stamped numbers. Don't look at the headlines. I agree with your sentiments however coming from communicable disease epidemiology standpoint.

      @kevinavillain4616@kevinavillain46164 жыл бұрын
    • KEVIN Avillain lol at you’re more likely to die from flu. The fact is, prior to the pandemic, people didn’t have any type of immunity to the Sars-cov-2 because it’s a novel virus. People, especially in New York, are dying in a higher rate than in flu seasons. It’s funny that we have people walking around claiming something when they have no scientific evidence to back their claims. Kinda like when people claim the earth is flat when they haven’t even gone out to look at the earth from outer space lmfao. Kinda like when people claim 5G towers cause covid-19 when they don’t even know how 5G works and even what a tower looks like lmfao. But hey, we all have our biases.

      @princejones0077@princejones00774 жыл бұрын
  • I knew this story already. I heard it many times. I always need some drug after it. It is so depressing.

    @ronaldderooij1774@ronaldderooij17744 жыл бұрын
    • Its imaginary, don't feel too for the tale

      @TheTheSssupermario@TheTheSssupermario3 жыл бұрын
  • Excellent lecture, nothing more needs to be said!

    @jmsww2@jmsww22 жыл бұрын
  • Let's sing for the universe a verse that never stops !

    @susanlafayette7313@susanlafayette73132 жыл бұрын
  • The end of the universe is when i wake up

    @Mutation80@Mutation804 жыл бұрын
  • Could not agree more, "Milkomeda" has to be the worst name in all physics.

    @magnifeck4669@magnifeck46694 жыл бұрын
    • Gaia Sausage

      @Str0b3l@Str0b3l2 жыл бұрын
  • One of my favourite channels. Ty Ri. And G.Lewis. Nice..and feel like I need to shout out my man Issac.N. His work on gravity, imho, and genius was years ahead of anything. I mean, he basically invented physics! Then we wait for hundreds of years for someone to take on the baton. Just next level. I try, but some channels just, well they're speaking a next language. And I'm above average intelligence, I'm not afraid to say.

    @siheard4206@siheard42062 жыл бұрын
  • I enjoyed watching this presentation, very interesting and very exciting. Loved the statements of Douglas Adams at the end. (read his "Hitchhikers Guide to the Galaxy", if you have not already done so; you maybe recognize one of the main characters).

    @olafslartibartfast5248@olafslartibartfast52482 жыл бұрын
  • Yeah, in the long run, we'll all be dead. I guess I would have figured that one out by myself. In the meantime, let's try to keep humanity going for another 100 years. That's 1 * 10E2. Cheers!

    @markusschellenberg4684@markusschellenberg46845 жыл бұрын
    • In the short run we'll all be dead.

      @IndyMotoRider@IndyMotoRider4 жыл бұрын
  • You can skip half of this if you already read cosmology.

    @Daimo83@Daimo835 жыл бұрын
  • Great video; amazing explanation.

    @user-uf1rd3zt1k@user-uf1rd3zt1k10 ай бұрын
  • Great lecture thanks RI.

    @hvbris_@hvbris_5 жыл бұрын
  • We know there are several 'generations' of elementary particles like tauons, myons and electrons and top/bottom, charm/strange and up/down quarks. This leads me to the speculation whether our universe's history might be *fractal.* What we call inflation might have been Big Chill for a previous universe existing on much smaller spacetime and higher energy scales, and our accelerating expansion and Big Chill might be the inflation epoch of some other universe on larger spacetime but smaller energy scales, especially if there 'are' - actually will be - 'generations' of particles the now universe is still by far too hot for...

    @jensphiliphohmann1876@jensphiliphohmann18765 жыл бұрын
    • Out of all the other comments Jens, yours gives me comfort.

      @82luft49@82luft495 жыл бұрын
    • Cool idea

      @drew8443@drew84435 жыл бұрын
  • "Yes yes, eureka !!! I found the future of the universe with my many long hours of imaginative calculations and years of study and experiments. I'm just absolutely thrilled !!! " - "That's amazing what do you call it? " "The MILKOMETER"

    @drivenhome7840@drivenhome78404 жыл бұрын
    • 36:40 Milkomeda. At first I thought he said Milkometer too. I'd prefer to pronounce it Mil-kom-eda rather than Milk-om-eda.

      @veewaha4009@veewaha40094 жыл бұрын
  • Great talk. Thank you.

    @jimparr01Utube@jimparr01Utube4 жыл бұрын
  • A very interesting lecture. I call it "an epic of the universe".

    @mmusaed3466@mmusaed3466 Жыл бұрын
  • I feel like my student loans will go on for much longer after the death of the universe

    @ixijackixi@ixijackixi4 жыл бұрын
    • Great comment.

      @perrynnlynch1883@perrynnlynch18834 жыл бұрын
    • 😂!!! ,Aii good joke

      @relchan489@relchan4894 жыл бұрын
    • Ahhhhh, kids.......I am old enough to remember a time when my father said to me "Son, enjoy your four years at Trinity College." I wanted to help pay for it and he said, "No, your job is to study hard and learn how to think , and if you worked that would be a distraction.....and you are certainly not going to work during summer vacations----you are coming on family vacations to Maine!" His philosophy was you should only have kids if you could pay for their college, not a bad philosophy. Now I am retired after a long life working hard, unencumbered by debt, having saved my money, and now enjoying my martinis, fishing with dad's fly rod, enjoying my lake house, and nd watching videos like this. In a few years I will blink out of existence, hopefully before America is burned to the ground and socialism destroys the country,----with few regrets and grateful I grew up in the suburbs in the fifties and not in these poisonously toxic times.

      @frederickdahl2780@frederickdahl27803 жыл бұрын
  • the 20 minute introduction was unnecessary

    @VoodooD0g@VoodooD0g5 жыл бұрын
    • Thank you for telling me how far I needed to skip forward.

      @sbalogh53@sbalogh535 жыл бұрын
    • yeah fuck this presenter

      @letskeepearthgreen@letskeepearthgreen5 жыл бұрын
    • @@letskeepearthgreen Funny. That's exactly what your mom said (and did!!) when she saw me! Tell her I said "hi".

      @hamentaschen@hamentaschen4 жыл бұрын
  • Excellent material!

    @BobNettleton@BobNettleton3 жыл бұрын
  • Incredible lecture

    @climbeverest@climbeverest5 жыл бұрын
  • We just need to find a way to eat entropy then life can go on forever.

    @DaydreamNative@DaydreamNative5 жыл бұрын
    • The point is not that entropy increases but it might reach a maximum which would be deadly. An ever-expanding universe might permit entropy to increase forever without reaching a maximum.

      @jensphiliphohmann1876@jensphiliphohmann18765 жыл бұрын
    • Entropy is not a thing. It is a relationship between things, one of maximum disorganization. "Eating entropy" would be like "eating distance."

      @matthewweflen@matthewweflen4 жыл бұрын
    • Entropy is a law of state /a law of existence I meant /is a law of the things how need to befave/ in wich state they should find at any given time. So basically Entropy is a law of nature(nature being dead or alive) all obeys Entropy - except God. God is the only beeing in the Univers that goes beyond entropy and arow of time (if you understand my point of view) I'm not speaking about "gods" but rather the "God" itself - the Almighty. God the Almighty wich we don't have his exact name transcend time and he can travel through space not being affected by its laws. He is made out of pure consciousness. His energy is far mor subtile than any form of energy known to mankind - for this reason alon, he is not bound by the inertial law (so he doesn't need to obey the law of gravity or to the speed limit in the universe) he can travel at superluminic speed and he can goes trough matter or fields of energy without being afected by it/he literally can be at any given point of the univers at any given time (in the present time) or in all places at once. Is very difficult to explain though... but imagine because he's not bound by the speed limit of light he can literally be in any corner of the universe in any second if he chose to do so. That's an incomprehensible wisdom and power wich human brain cannot fully understand or grasp. God the Almighty is a Hiper-consciousness that's play with the laws on this universe and bend them alike as he pleases. I think I said enough for anyone to grasp a tiny bit of his imense power and wisdom. Have peace.

      @alexandrudanciu7874@alexandrudanciu78743 жыл бұрын
    • @@alexandrudanciu7874 How do you know?

      @HomoSapienMan@HomoSapienMan3 жыл бұрын
  • "The Last Question" by Isaac Asimov is a possible answer?

    @djw6430@djw64304 жыл бұрын
  • 감사합니다. thank you

    @hhheo6674@hhheo66744 жыл бұрын
  • Amazing presentation...!!!!

    @johndoepker7126@johndoepker7126 Жыл бұрын
  • But, what's beyond the "END OF THE UNIVERSE"?

    @Tall-Cool-Drink@Tall-Cool-Drink5 жыл бұрын
    • The end of time. So there is no 'after'

      @michaelsedzikowski3669@michaelsedzikowski36694 жыл бұрын
  • There is only one question left to ask: is his audience a form of living matter?

    @michaelsedzikowski3669@michaelsedzikowski36694 жыл бұрын
    • See above.

      @ivorbiggun710@ivorbiggun7103 жыл бұрын
  • Great talk, thank you! top notch!

    @letitsnow8518@letitsnow85188 ай бұрын
  • Now that was a lecture 👌

    @MuscleBandit@MuscleBandit2 жыл бұрын
  • The 1-st law of thermodynamics states something to the effect... Energy can not be created or destroyed. (only exchanged). where did all the energy go? Converted.

    @MrConformation@MrConformation4 жыл бұрын
    • Very good question

      @thomaslehmann2369@thomaslehmann23694 жыл бұрын
    • Hate to be pedantic, but that's actually the first law. 2nd law means you always lose a bit of energy as waste heat that dissipates when you convert energy from one form to another.

      @fuzzblightyear145@fuzzblightyear1454 жыл бұрын
    • Type corrected... If energy can not be created or destroyed, there should be no "loss". From the bit humans know. We lack the ability to convert w/ efficiency in a directions WE wish it to go. And how WE want it to go. Energy is the same. getting it to convert how we want it to has yet to be mastered.

      @MrConformation@MrConformation3 жыл бұрын
KZhead