I’ve seen him give this same lecture a few times now. Every time I watch it I’m amazed that he’s able to briefly describe every major topic of modern physics, then within the same lecture describe the edge of humanities understanding of the universe. Without a doubt, he is one of the smartest people on the planet. He understands the equations, the physical implications of the equations, the history of how these phenomena were discovered, and he can elegantly communicate his knowledge in a way the average person can understand.

This is a really wonderful, nuanced little talk on something very complex and not well understood. I really liked it.

Andy Strominger is ALWAYS an interesting lecture or talk

I love the drawings so much!

Fascinating!

Discussion of the frontiers and the collapse of string theory? 2:05 Contradictions of laws of physics. 4:16 Andrew Strominger 6:04 Uncertainty principle does not have meaning applied to gravity 10:24 34:47

22:07 "after 300 years, your chips would become black holes." 😂

wow! Mind blowing.

These slides are so much more interesting than Powerpoints. Great presentation! Thank you.

The transition of magnetic structures inside heavy atoms under extreme gravity at the black-hole's horizon may make skyrmions with spinning pointing to the center -1. Do this spinning behavior make skyrmions extremely stable and slippery? Please talk about the relation between black hole and skyrmions.

Nice lecture #

we could all know the long hidden secrets of the universe if only these scientists would read the utube comments..

Is gravity just the absence of empty space? A bit like the Casimir effect, empty space applies some pressure against space that isn't empty, and mass (or energy) takes up space. Does the presence of mass or energy also distort quantum fields (space-time), in a similar way to trying to force a ball into a flexible grid of holes, with the distortion getting less with distance? That would be like minute changes in planck's constant (lower nearer the mass/energy). Planck's constant seems to appear everywhere, so if it changed, would have quite an effect (apart from no longer being a constant).

BAM!

I'm smart enough to know I'm dumb.

There should be an art competition between Andrew and Nima.

Excellent show! Yours TeslaDan4Freedom

black hole gm/c^2 = m/10^28 from gravity g ,g(p)=g*(m/pm)^2=10^28 strong force in proton strong enough make proton a black hole.

Black holes are both QM and classical objects, just like photosynthesis and tunneling, produce food for all plants, or how a robin uses entanglement to navigate while migrating. What is a challenge for physicists is to explain where does the mass reside and how does it spin and as matter falls into it how matter is spit out the poles as jets of particles (and possibly strings) accompanied by magnetic fields. In that, spin, mass and charge are not the only things we find on a BH. True, the BH inherits 'complexity' and may act as a QC function, involving entanglement, somehow. Besides the super conducting holographic surface (resulting from circulating charges), where information (energy and hence mass) is stored as strings (hairs), the various magnetic fields can simulate motor action, explaining spin of o.9c.

I recommend 1.5x speed, he's really pleasant at that pace

the singularity is "nothing." But that doesn't happen at the event horizon does it? iT seems that at the event horizon i would not see it especially if I am spinning in faster and faster... your event horizon would move from my perspective. as the force spins the matter faster and faster it bumps and resonates and interferes as it gets denser and denser towards the singularity. eventually as dense as the protron star is... and spinning at the speed of light like a gas and the centrifugal force keeping some matter from entering the singularity. all this dancing and interaction has your Hawking answers... and .. Is there a limit to the amount of matter that can enter a singularity at one time? Can the entire universe enter a singularity at once? I think there must be a limit... anyway depending on how the mass comes together to form the black hole will determine how much matter is spinning and bumping and trying to enter the singularity. so if I am wrong, why is the black hole "nothing" beneath the event horizon? how does the spinning stop? joel

Neutron decay cosmology. Black holes are pressure release valves for universe. Maintaining thermodynamic flow and equilibrium. Conservation. The neutrons which invert at moment of neutron star collapse into black hole are transported from highest energy density conditions to lowest energy density points of space, deep voids. There they travel 14ish light minutes before they decay into amorphous atomic hydrogen. This decay process includes a volume increase of 10^14 times. This is expansion. This process is how Lambda is kept in balance. The amorphous atomic hydrogen has no proper orbital electron so cannot emit or absorb photons. This is part of dark matter. From here it follows usual evolution. Time is a compact dimension one single Planck second long and every point shares this dimension. We exist on one side of hyperplane created by this shared moment of NOW and antimatter is on other side, rotating the other direction over time. This is why baryon asymmetry. This is why chirality. Is this why electron has 1/2 spin? 360 on matter side then 360 on antimatter side? An inflow on this side is an outflow from the other side. Clockwise away here is counterclockwise towards there. This way at every moment the universe requires least energy. Inflow/divergence=negative charge (arbitrary convention notwithstanding) and outflow/convergence=positive charge. This is why the fundamental mass particle is positive charge. Gravity is also a convergence. Happy Holidays!

Its been a year where are the predictions

However space itself can travel faster than light

It's a shame that some of the best minds of our time are not the greatest speakers.

why black holes have different sizes if there's nothing inside them? or why they have different masses if they're not made of matter?

Wahey.

I theorize in a blackhole there is no π

Solve the puzzle of the black hole in our presidents head

I want to know how something came from nothing.

Black Holes??? @

I guess things travel faster than light when g builds up!

So, he starts sentences with , So...

There aren’t any. Problem solved.

A bllackhole is just a system of some sort. Get your engineering hat on.

the thing about matter atraction is that matter just dont atract to just any matter, the way is done is positrons atract to electrones and not just any electron with any positron, matter is clasified thing; I say so because I did some entanglement in a real DNA picture that tells me that we dont need of dark matter, dark energy, the systems stay togather by ENTANGLEMENT they entangle by pairs from north to south all of them crossing by the medle center of the sphere(photo) there are 4 orbits made by 4 HEXAGONALS and when you add each pair all of them give you same result in each orbit respectively, you can click in my channel or look for the video THE FLOWER OF LIFE OR DNA DECODED. We dont need of dark matter or dark energy because stars dont move as planets do, stars move as follows: the FLOWER OF LIFE OR DNA IS MADE BY 7 CIRCLES were 6 of them are arround one in the medle, the one inside is made by the outer 6 circles and as the inside moves the other 6 follow, if the circles would rotate the numbers will change but the result in each orbit will be the same, I have seen this in some pivture taken by some telescopes you can tell by the blue stars that surround the center of the systems. I will give some numbers that most of them relate to GRAVITY a thing he didnt explane for short of time that he was, the numbers are a bit diferent of how you might be use to se them like the total mass of our solar system(the eight in the disc and the suns gravity all added) this number makes exelent numbers. Its a need to say that there will be in all numbers COMMON DENOMINATORS in acordance to fit the numbers a thing that is goog if we want small quantyties of energy as nedded a thing that the universe does. All data is METRIC as the universe is. 77.86 is the gravity of the 8 planets in the disc all added, if we add the suns gravity(274) = 351.86/3.1416 = 112.00025. 112.00025/300000k/s(LS) = 2678.5654/89.28 = 30.001852. 89.28 Is what you get when you divide 351.86/31416(common number) this is 10000 times the PI.some times youll find equetions like this one where the correct thing to write is112.0025/31416= 351.86 i doit the other way for not to cut the serie of numbers, to make it shotter and more understandable, what matters here is the resul. 149.6 millions of km. for suns light to reach as times 210(common number) = 31416. 31416 is what you get when you add the three faces in wich the universe works: 10920 is HIGH FACE/3141600 = 287.6923/144(# PHI) = 1.9978631. 10416 is MEDLE EACE/3141600 = 301.6129/3.1416 = 96.006143/ 17126.594(the 118 places of the PERIODIC TABLE MASS ALL ADDED) = 178.39936/89.28 = 1.9982007. 10080 is LOW FACE/31416 = 311.66666/77.86 = 4.002911. 22EARTH YEARS IS A COMPLITE SUNS CICLE times 365.25(a year) = 8035.5/10920000 = 1358.9695/3.1416 = 432.57241/144 = 3.003975. 22/31416 = 1428/300000 = 210.08403 22/17126.594 = 778.48154/77.86 = 9.9984785. 22/16180 = 735.45454/3141600 = 4271.644/3.1416 = 1359.7033/3.1416 = 432.80599/144 = 3.0055971. 1359.7033/17126.594 = 125.95831/1.618 = 77.848152 - 77.86 =0.011848. 22/10920 = 496.36363/3.1416 = 157.99708/17126.594 = 108.39816/1.618 = 66.995154. 42 are the PETALS OF THE FLOWER OF LIFE OR DNA/10920 = 260/300000 = 1153.8461/3.1416 = 367.27976/1.618 = 226.99614/17126.594 =75.448833/3.1416 = 24.01605 X 6 = 144.0963. 42/10416 = 248. 42/31416 = 748. 42/17126.594 = 407.77604/300000 = 735.69795 SAME AS 22/16180 = 735.45454. Are this pure coinsidense? you tell me.

Black holes are based on the current solar model, and that solar model is incorrect. Start doing some real ongoing research and your findings will be vast. Egos aside and minds open.... try it sometime.

And what new have we learned from this? Nothing...