Roger Penrose: Time, Black Holes, and the Cosmos

[@mountjlswgoh7111]

What I love about this discussion is that it epitomises what science is all about. Sir Roger has his perspective. Alan Guth has a contrary perspective. And neither throws their toys out of the pram about the others' perspective. Progressing knowledge by cordial argument, but neither being unwaveringly steadfast (or obstinate, if you will) that their opinion is unequivocally correct. I love it.

[@Dadas0560]

And you call that science? I call that science-fiction.

[@SANG0I]

It’s honestly incredible how well Penrose can explain a concept at his age! Unreal human being.

[@genghisgalahad8465]

I think it COMES with age!

[@Kronzik]

Roger Penrose is one of the greatest human minds to ever exist and a personal hero of mine. Thank you Brian and Sir Roger for bringing this conversation to us!

[@ritik_baliyan]

Brian hasn't changed his dress code since the beginning of time.

[@johnporten8303]

He has also been trapped in the string theory loop for just as long.

[@pantherstealth1645]

@@johnporten8303😂😂😂😂😂😂

[@HarryNicNicholas]

me neither, it's shameful isn't it? or does it matter?

[@HarryNicNicholas]

penrose needs to do something about his hair or he'll never get a nobel.

[@HarryNicNicholas]

penrose will never get a knighthood wearing jumpers like that.

[@hugegamer5988]

I’ll never forget watching Roger Penrose speak in person at University, he has always been a very eloquent speaker.

[@junkgyre5301]

I COULD LISTEN TO PENROSE RAMBLE ALL DAY.

[@RandallHeath1121]

What a delightful combination of personalities and insights. Thank you!

[@muhammadhussain8825]

who support roger theory of consciousness

[@asimaziz3112]

Thanks for sharing great knowledge

[@markoszouganelis5755]

Thank you World Science Festival🌈🌈

[@duggydo]

I have always loved the music at the end of the WSF videos. I wish there it was available in a stand alone version somewhere.

[@marrrcelo]

I read two of your books, Brian Greene. You are a genius at writing! Very interesting view on biology

[@billnoll]

Designing wallpapers with Penrose tilings as I listen... thank you Sir Roger Penrose for this humble moment of synchronicity!

[@jimmyzhao2673]

Mysteries of the Universe seem to be getting harder & harder to discover.

[@magnushorus5670]

thank you for these conversations!

[@shanemcinally2218]

Woo finally black hole topic again. Ps5 and this to chill for the night❤

[@tomasgray6441]

Some of the best people on earth

[@JoanneMcCardle]

Is String Theory still a thing?

[@HarryNicNicholas]

yep.

[@hihowareyou0000]

Best Friday 😊❤

[@fredcrown-tamir698]

Great program.

[@Dmarie210]

Some of my two favs I love them both 🎉❤ yay can’t wait to watch this!!!!

[@Jason-gt2kx]

Novel Dark Matter Hypothesis Dark Matter is simply unaccounted for gravity. GR states that gravity is the consequence of the curvature of spacetime. Is it possible that the structure of spacetime itself could be warped without the presence of matter? Spacetime has been shown to react like a fabric by warping, twisting, and propagating independently of mass, and all have been proven with observations from gravitational lensing, frame dragging, and now gravitational waves! Fabrics can also be stretched, pressured, and/or heated to the point of causing a deformation and losing its elastic nature. All of these conditions were extreme during inflation, so it is plausible that the “fabric” of spacetime analog could extend having its elastic property have hit a yield point leaving pockets of inelastic spacetime geodesic that cause gravity without the presence of matter? Therefore, if gravity is strictly the consequence of the warped of spacetime, and fabrics can be permanently overstretched, then those empty warped geodesics would create gravitational wells independent of mass. My hypothesis of DM is subatomic black hole imprints of the quantum fluctuations that popped in at the moment of inflation. The CMB shows where the hot dense regions were they created the galaxies. They would have been the initial cause and location of the warping. These imprints would be clouds of quantum sized floating fixed geodesics, so they couldn’t expand or evaporate. Perhaps nothing has been detected because there is nothing to detect. GR wouldn’t require modification because DM would just be an extension of how spacetime behaves at extreme conditions. No MOND, no WIMPs, and no parallel universes, just empty spacetime deformations that produce gravitational wells to help jump start galaxy accretion processes. Zwicky may have named is Missing Mass correctly since he detected some gravity without mass present to cause it…

[@armchairgravy8224]

Yes, and entropy as always has something to do with it. I think it's an information processing/holography solution. Looking at black holes of containers of entropy and why gravity arrived so late to the entropic party are great avenues.

[@harold22774]

Layman here some of what you are saying is beyond me.but you ask if it's possible that the structure of spacetime could be warped without the presence of matter. Einstein stated that energy,=matter so I'm guessing that in the absence of matter energy might do the trick

[@nunomaroco583]

Hi, I can't wait, I hear about Ambitwistor theory, I find very interesting cause if I understand, combined string - theory and twistor theory .

[@theozarktrekker]

When Mr Penrose says “ I have to be slightly technical here”, I know I’m about to be out of my depth.

[@ZapScience7]

Great

[@JCol-o3n]

Thanks for doing these. I love hearing you all talk. Roger looks like Roger Federer’s older brother. Do you get a lot of that Penrose? I’d say , “Rodger Federer looks like Penrose”, not vice versa.

[@3opaH]

No, but we do get a lot of: "Djokovic is the GOAT!"

[@Dadas0560]

You know, when one starts with the assumption that they are correct, one will always find what they're looking for, even when it's not really there...

[@TeranceJakubus]

LET'S GET SOME

[@wicky4473]

Can you imagine asking some bloke on the street for the time…and it turns out to be Roger Penrose?

[@winycentaur2540]

xD

[@hydrorix1]

Time is a result of the Thermodynamic Law of Entropy. No Time -- No Entropy. No Entropy -- No Time. It's a temporal manifestation within Consciousness.

[@AndrewRoberts11]

If there's a singularity within a Blackhole, surely its entropy is static.

[@AliBenBrahim-s9x]

Earth goes through space that's time.

[@conspansion]

Quantum nest theory explains it all

[@campursarian1977]

I always regret getting married young to the wrong person, not going to college to get a PhD in physics, and getting a degree in CEET when I was in my late 20s instead.

[@Mentaculus42]

Computer and Electrical Engineering Technology (CEET) ? Why regrets?

[@adamn3941]

Okay so I'm wrong it is a virtual screen..... as I looked it up but still I wanted TV that big. Who else wouldn't want a massive screen like that come on now

[@gerardopc1]

👏🏼👏🏼👏🏼👏🏼🇲🇽

[@dennisnew335]

why are they still called stellar mass black holes? quark star would probably be a more accurate description. created in the early universe as a result of direct collapse. this hawking radiation comes from the outside not the inside, no entanglement, if there is entanglement it only exist on the outside. i don't think anything gets in or out, probably the hardest surface in the universe and can only be penetrated by another quark star and the only thing in the center is just more tightly packed quarks. probably the only place in the universe where the weakest of the four forces wins out over the strongest force.

[@markusk9766]

Sabine said what she thought about this festival and that's it.

[@Thomas-gk42]

Funny thing, she's on a live debate with Roger Penrose on stage tomorrow, 21. 9. on the iai festival in London. I'll be there 😊

[@jimmyzhao2673]

What did she say about it?

[@tomasgray6441]

😊😊❤

[@TeranceJakubus]

Dr.Greene, there are devices to measure gravity waves. Is it possible to form a computer scenario for meteor and even asteroids deterrence..

[@KaliFissure]

Neutron decay cosmology A path of least action, physical process solution to black hole paradoxes, dark energy, dark matter and critical density maintenance. A homeostatic universe maintained by the reciprocal processes of electron capture at event horizons and free neutron decay in deep voids. Gravity gathers mass to event horizons. All matter is made neutrons at event horizons because of electron capture. Infalling neutrons drop off their kinetic energy as mass for event horizon. The neutron identity takes an EinsteinRosen bridge from highest energy pressure conditions (maxima) to lowest energy density point< (one neutron at a time) of the universe. Wherever the quantum basement is lowest and easiest to penetrate. Geometry. A free neutron in deep void soon decays into amorphous monatomic hydrogen, proton electron soup in a Rydberg state, dark matter. Unable to interact with photons until each ejection is in a bound state as monatomic hydrogen. The decay from neutron 0.6fm³ to about 1m³ of amorphous hydrogen gas is a volume increase of around 10⁴⁵. Expansion. Dark energy. The amorphous hydrogen stabilizes first into monatomic hydrogen And then into H2 and all the other elements of the universe continually falling, net, towards an event horizon. Loop. All of this, limits, gravity, conservation, the chiral separation, is caused by compactified time.

[@armchairgravy8224]

@<a href="#" class="seekto" data-time="1815">30:15</a> The wave of a photon is frame dependent. That's a fresh insight I'd not gotten before, but makes total sense (as much of any of this does). Yeah, I've heard Doppler shift a thousand times, but this time it struck me as a fundamental principle, not just one of those weird physics things. Also, the end is the beginning is the end is the beginning...

[@jamesmonty2963]

Ironically enough poor Roger looks UNconscious .

[@TesfahunSelemon]

Life start from white hole ends in the black hole

[@HarryNicNicholas]

i see that name "penrose" i would be foolish not to click.

[@markusk9766]

Brian your string theory is dead. Do somethimg. C'mon

[@ZhanMorli]

Do you need a new tape measure to measure the Universe? Let's work with the postulates of Einstein's theory of relativity. And if we apply new technologies for this, using the experience of Michelson Morley on the airplane fixing speed 200, 300, 400 m/s., we will see how quantum gravity works. Such measurements are impossible on the satellite due to weightlessness.

[@TeranceJakubus]

Dr. Greene, "nuclear detonation in outer space" Operation fishbowl was still in Earth atmosphere.. is it possible Dr. Greene for nuclear fusion to implode and form a black whole?

[@TeranceJakubus]

We live in a black whole

[@markoszouganelis5755]

I think so too!

[@viewer3091]

Could be !

[@HubbardGavin-e1x]

Lopez Margaret Robinson Melissa Taylor Sharon

[@StaticBlaster]

I just bought Roger's book "Road to Reality." You have to know some physics and math to understand what's in it which I do have under my belt.

[@zkasprzyk]

r/iamverysmart

[@TeranceJakubus]

Dr. Greene, The radiation that Jupiter produce from its core is phenomenal. Black wholes emit radiation how does this relate to the core of Jupiter?

[@TeranceJakubus]

Brian is computer generated? This is AI

[@TeranceJakubus]

Dr. Brian Greene, could space fabric be manipulated for space travel? NASA's conventional rockets can only go so far...

[@TeranceJakubus]

There's a black hole in the center of the Milky Way galaxy. We live inside a black hole. The space that's between galaxies is where I want to be

[@kricketflyd111]

Atheists are so cute. ❤

[@Ben-kf7jz]

If you don’t stop this [post]-pandemic FaceTime/Zoom crap; I will unsubscribe.

[@bakedcreations8985]

Brian the fart sniffer