@@cesarcueto1995 Good luck finding a book updated with recent scientific research and discoveries. Also, try not to dis people on the internet, you aren't making them look bad XD
@@RiaGuy And sorry if this aint you im describing. I dont know you. But you just made me laugh with the statement "recent scientific research and discoveries", all while commenting and pretending to be some sort of science expert trying to give advice on one of these silly online fantasist channels to dismiss the old ways for this cheap imposter taught today. Its too ironic. 90% of todays nerds are as far from real science as east is from west. Unfortunately for your pride, you are bundled into that mess of imposters by default due to the backward programming of your youth. You were rewarded by compromised institutions for having a subjective ability to REPEAT multiple choice question and answers, then getting a reward if you can regurgitate it astutely. And all by FORCE and under threat. You had no choice but to seek approval from it. Brainwashed from childhood never having the chance to investigate objectively. Its not even an option. You do what they tell you do do or you fail their reward process and are made to look inadequate in the group mentality. Its the same as giving a monkey a banana for doing cheap tricks and then punishing the ones who dont conform. The more rewarded you are, the more regressed you are. Thats a fact. That type of indoctrination of today only works on the weak, inexperienced and immature. Thats programming at its best. Its quite genius. Its actually child abuse. Its not science. Its called indoctrination. Its psychology if anything. And you all have serious Stockholm Syndrome due to it. Only the most subjective, inexperienced and naïve come out of it thinking its legit intellect and factual. And ol mate is correct. Go read a book. The old books have much more intelligent research than anything you cheer online or taught in the education institutions of today. The older it is, the more wisdom and fact to be found. Todays watered down version is a shell of what science was. Im old enough to remember the last fragments of empirical science and how far it has fallen into this mimic and shallow replica it is today. Its terrible how regressed it all is now. Yet you think its advanced? How bro? Social media? Gaming? Nasa fan boys? Elon Musk? Haha. What a farce. If anything its going backward. There is no advancement. Software is putting us back into the stone age. The peak of science was centuries ago. BEFORE Aristarchus and Copernicus came on the scene with their religious fantasy sky god concept.. Ancient tech is something todays rewarded graduates have no idea of. You only have to observe the oldest buildings to see we are regressing. That stuff IS science. Watching these silly online expert wannabes talking about fantasy conjecture as if its actual science, and then trying to give impression that you can chime in on it all and get away with it unchecked is on YOU mate. Haha. Its a terrible time to be alive. I had no idea men would be THIS stoopid. Internet has destroyed your generation. You wont start getting this type of wisdom until you are in your 40's. Its embarrassing mate.
This is incredible. I am a university lecturer (not in physics, though), and these videos are far clearer and better than anything I or my colleagues produce. Absolutely amazing resource - thank you for making this freely available to the world and the scientific teaching community. Every university should be donating to you for your efforts.
@@hellothere8675 it's all in how you use/view them. Universities have been a breeding ground of a lot of the social bs that's been going on but the people who apply themselves become some amazing people through higher learning. Unfortunately, people can pay their way into these places and ruin it for many others. Social casts and the state of culture today have made higher learning kind of a joke in a few ways. It's still a beautiful thing.
This is exactly the level I want science videos to be at! Now give us a serious of videos about each detail in this process! :D Edit: I realised "give us" sound a bit... Demanding. It wasn't. It was just me being eager for more. 😁
The potential for follow up material is boundless. He was microns away from describing the process by which denser than iron elements are made in these explosions. In the fleeting plank lengths of time that the flash of a star’s dying moments occur, exotic elements like gold, plutonium and other dense materials are made, without which there would be no us to wonder at it all. What always blows my mind so completely is that these moments of such utter destruction are also moments of total creation! The very stuff of which life is made possible is produced by the most destructive events known! The Yin and Yang of that is something to ponder.
Yes, it was a blast to watch, absolutely stellar. I was totally absorbed in the explanations, and the visuals were radiant. I found the whole thing superlatively illuminating, and collapsed any uncertainties I had about this type of supernova. Totally blown away XD
Yes, that's about right. A light year of lead. But the collapsed core ends up being 1e13 times denser than lead, so a km of such material can block neutrinos.
Honestly when i found this channel, i didn’t focus on subscriber number, toight it was 500k~1m base on the videos and themes, now here i am, with only 17 comments before me. You deserve so much more.
The quality is unbelievable! If he makes a video, I just know it's gonna be good! His video's are among the best there are on the platform. Comparable to even kurzgesagt! In my opinion, his best vid is "How starts die". But they are all so good!
It is the second of november 2021. This channel only has 122k subscribers at the moment. I predict a growth of this channel in the order of magnitude of the core rebound due to the strong force!
"As the silicon layer burns above during the last day of a star's life..." That sentence made me so existentially sad. To think even something as cosmically majestic as a star has a very last day of life...
No reason to be sad seraphim. No you would not exist had a silicon layer not formed above an iron core in the center of a massive star. A bit of time ago. What boggles my mind is that we tripping dancing creatures in a sunlit meadow can hold and understand this in it's mind. It has not been very long that humans had an inkling of how we got here in the last 13 1/2 billion years. What happened before that is subject to a lot of thinking.
@@PaulHigginbothamSr You need to stop idolising Sheldon from BigBangTheory. There has been no 13.5 billion years. Darwin proved this in his research on worms. Stop looking up and trying to understand stars and fantasizing about what they are and instead look down at your feet and try understand how earthworms were designed and how they help humans grow food.
Wow! Yep, that bogoggled my mind for sure! The direct Urca process answers a huge lingering question I had about all this. I'm gonna watch this video like 5 more times and be all over Wiki and google armed with powerful new search terms for weeks. Thanks for making this. I wish it were longer. I was glued to that simulation and your visuals (particularly the formation of the shell structure prior to the SN) were beautiful and elucidating as well. PBS Space Time better watch out 'cause you're crushing these topics harder than a collapsing core. I can say that because now I know roughly how hard that is. Bewm!
Couldn't agree more. Such a superb presentation. Interesting that he spells "Urca" as "Erka" in the chapter section, though. I was a bit confused by that.
I really appreciate that we live in a time when we can watch videos like this that explain these processes in terms of their most elementary components. Visualizing these vast temperatures as exchange of elementary particles is exactly the kind of education Denise to be out there and not just a 'supernova is an exploding star' etc. MORE OF THIS PLEASE!
This is one of the best science explanations and visualizations I have ever seen. Bravo. RU-vid, please recommend this to everyone. This is cutting edge science
My brain just went supernova. 🤯 Absolutely phenomenal presentation, though. Definitely the best analytical breakdown of a CC Supernova I've ever seen on this platform. Incredibly well done. Really appreciate you putting this together and sharing it with us. Keep up the amazing work, my friend(s).
It is rare to find a physics/science video that explains topics that I do not yet understand, while AT THE SAME TIME explaining it so well that I understand what happens. (instead of being overwhelmed by unknown stuff) Thank you for this video, you've gained yourself a new subscriber!
This is one of the best explanatory vids I've ever seen on YT... the explanation is exquisite -- this type of explanation and teaching needs to be replicated over and over!
Why would you assume it's one man creating these? Just because you hear one narrator does not mean there's only one man involved in the production process. Have you gone through your entire life under that impression?
So this is a super common misconception, the core doesn’t stop fusing at iron, nickel 56 is the final fusible reactant that is created in the core of a star. It just very quickly decays into iron.
the Urca process was super intriguing to see for me. i looked up a few thing and there are so many interesting tidbits about it (the naming alone is top notch) but what i found the intersting was this: i was a bit confused about how the process could pump out so many leptons when the lepton number is supposed to me a conserved quantity; and while one could of course still model it that way i indeed read that lepton number conservation seems to be more of a statistical truth, which made much more sense to me seeing that the Urca process converts something rather statistical in nature (namely thermal energy) to a quantized form of energy.
The lepton number is conserved because the Urca process produces just as many neutrinos as antineutrinos. It doesn't have anything to do with this sort of symmetry breaking. You seem to be mixing up unrelated topics. If you didn't understand the explanation: a neutron decays into a proton, an electron, and an antineutrino (common knowledge hopefully, and the lepton number, and baryon number, are conserved). Then because of electron degeneracy pressure, excess electrons are absorbed by protons, producing a neutron and a neutrino (again, conserving the lepton and baryon number). In reality, there isn't much distinction between this version of the explanation, and just saying that at sufficiently high temperatures, neutrons in an electron degenerate environment will cool down by producing neutrino - antineutrino pairs preferably. That is, they cool down mostly via the weak force, rather than say the electromagnetic force.
This deeper dive into this process gave me such a better understanding of not just supernovae but also how fundamental particles interact, amazing video and series!
We don't need my little comment to realise how dedicated AND truly gifted our video host has become! Thankyou very much! If I didn't already know this stuff it would have even been better! 🥴👻🚀
Absolutely incredible video as always! The way you explain things, combined with the gorgeous and intuitively understandable graphics put you in the god tier of science RU-vidrs, hands down! Please keep up the great work!
This is great. I've always heard the pop science version of what a super nova is and it's always left me with so many question. Incredible video as always and thanks for the answers. (the animations are great too)
Exactly! That's my another account! After 7 months I'm watching the same video again and stumbled upon my own comment made by me from another account. Hi fellow me!
Thank you! This answered a years old question of mine, i. e. why we expect gravitational waves from supernovae. As far as I know, gravitational waves need quadrupole and up excitements and I always thought of supernovae being mostly a radial motion thing. with dipole motion being crucial to the process, this makes so much more sense.
Wow, thanks for going to the next level of depth. We’ve all already seen the usual explanation dozens of times......we know that already. So good to learn new things.
Don't forget all of this knowledge is theoritical! Produced from the data we got through tracing the materials of exploding stars and an explanation was build that comfortably fit all the given observed data! Imagine at what level the minds had worked that simulated these explanations!
WOW. It is mind boggling. There are a few things that I couldn’t understand but until this day a haven’t seen any videos on RU-vid or any other platform, that visually explained what happens in the core of massive stars. Thank you!
The best, most in-depth and clearest description of core collapse supernova I have found anywhere on YT, and although I am no scientist, I am fascinated by the high-energy universe and watch a lot of videos on this subject. Fascinating! Mind blowing! Thanks!
Loved this! I was just talking to my father in law the other day about nucleosynthesis, coincidentally. He wanted to know where gold came from. He didn't know how deep the rabbit hole went!
I've been reading and watching everything I could find about core collapses for probably 10 years. Why is this the first time I've heard about the strong force pushing the core back out to a greater volume? It's really not a difficult concept if you made it that far in the explanation.
This channel is amazing man...just found it today, and you seriously teach things on a deeper level than other channels, I have watched multiple PBS spacetime on supernovae and I I never knew alot of what you taught here. Straight artisanal man!
Wanted my teachers to explain why neutron could keep protons close to each other........suspect no one really knew when i asked in '61...........thank-you for your presentation!!
I have to pause the video at two minutes in, to say, that part from about one to one and a half minutes..... Oh! I _finally_ get it! Even after reading and watching countless videos I never quite understood how it ended up layered like that, in the center. Thank you.
I took and loved a stellar evolution class for ‘non science majors’ my freshman year of college in 1991…this video makes me realize how cartoonish our swim through the subject of supernovae was…wish this video had been around back then.
Pedantically, I offer that the most energetic event known is actually a black hole merger, ones recorded at LIGO released more energy than the observable universe for a fraction of a second, by a factor of about 100 iirc, but entirely in the form of gravitational waves. Future detectors may be able to detect smbh mergers, though at what radius are they ever likely to observe one might be a concern.
i can not fathom the complexity of this... i am amazed by what us humans as a species can achieve in science/knowledge about the universe without using any of our senses to understand it. great video quality, good job
Just keep going, dude?! This stuff is hypnotic! Your graphics team deserves an award or two as well. Mesmerising to watch, with a unique quality of tangibility to them that you just don’t get from the graphs and stock footage you see on so many other leading channels of this sciencey nature. I’ll have to watch this one, two or three more times before I fully grasp it all, but it scores an 11 on my fascinate-o’meter (which breaks at 10 btw) so I just have to see more of those beautiful animations and listen to your awe inspired voice telling me all about the biggest, hottest, most mind-alteringly, incomprehensibly vast events in the universe! Thank you.
The channel name is incredibly apt for the topics discussed- I always knew about how supernovas were caused by the core collapsing, but never why that exactly led to the star exploding. This perfectly answered that “but why” question I didn’t even know I wanted answered.
Discovered your channel about a month or 2 ago and love it. Love the way you explain things and the visual representations. That blue figurine buddy has learned a special place in my heart.
Extremely informative video! Not only are the animations really well made, the research and simulations, especially in this video clearly show just how much work is put into making it.
The quality is unbelievable! If he makes a video, I just know it's gonna be good! His video's are among the best there are on the platform. Comparable to even kurzgesagt! In my opinion, his best vid is "How starts die". But they are all so good!
amazing, just AMAZING video. This level of content is incredible, not some "superficial" thing as 99% of youtube videos congrats from Brazil. Really, this is an incredible work that you have done
So some stars go fizzle or pop, and some stars go boom. Got it. Very well produced video. Really good graphics, and CG. Narration well spoken, without annoying background music. Extra points for a brief production introduction, and then straight to the subject. I just discovered this channel, and this is the second video I watched. Definitely subscribed and will be watching the rest of video catalog. Highly entertaining.
I come back to this video again and again. I LOVE the description of how neutrinos impact the end of the star's life. I'm no graduate student or anything, but this topic is endlessly fascinating. I figure if I watch enough science vids and documentaries, I'll understand what the direct ursa process is :D lol
I’m no expert in this topic, but I believe you have reached the point at which we see stars producing the more exotic elements, without which there would never have been life in the universe? I’m told that everything from gold to plutonium will suddenly appear in these explosions, due to the immense heat, pressures and asymmetric nature of the blasts. I would love to see a video about that? About what the explosions do in the universe and how their effects are all but infinite in their ability to effect almost every other region of spacetime? At this moment, astronomers are witnessing light from such explosions, occurring billions of years ago, almost unimaginable distances from us, creating the building blocks for complex organisms. Acts of creation out of destruction, both of which truly do boggle my tiny mind. Wonderful show, sir. I love your tongue tied appreciation and wonder. Much like my own.
