I love these lectures so much, it's like you hit every section out of a textbook seamlessly with enthusiasm for the topic and empathy towards your audience from obvious experience of having taught it... I wouldn't describe you as a "hidden gem" because you're easy to find for anyone wanting to learn the topics, but you're definitely one of my favorite channels after discovering you.

Jason, you are a true gem. I love falling to sleep to your video

Man these videos are so fantastic. What a gift to the internet!

Like I am back in school, in the best way. Learning for the pleasure of knowledge! Thank YOU!

this is so helpful for scioly reach for the stars

If anyone needs a book that describes a lot of this, and would be considered a definitive source, I.S. Shklovskii's "Stars: Their Birth, Life and Death" foreword is by Carl Sagan. I had the book in the original Russian, but sadly can't find that first edition anymore so I have to make do with the one by Cambridge scientific press

19:37 likewise... how encouraging!

Thank you so much for the presentation 🙏🏼

2:15:00 I hear neutron star collisions are getting more credit for making heavy elements.

I love all of Jason's videos! I learn a lot from him. I hsave to watch multiple times so I can comprehend it better. He is a great teacher and professor!

Great presentation!

Thank you for the video! I work full time and take classes at the university, so i love listening to your astronomy videos while lay down at night. It helps me remember the book 😊

Astrophysics is fascinating.

I still wonder how redshift is being calculated for the distances of far away galaxies, taking into consideration that we have these "blue" and "red" star types. Don't they interfere with the calculations to the "redshift" value?

Incredible lecture. While bringing in history/anthropology is speculative (as you acknowledge), I think it's brilliant and should be a serious field of study for two reasons: 1. Technology and timescales: Human technological progress (and thus the tools we have to observe the stars) is increasing exponentially. On the cosmic timescale, we're basically the generation that just entered the tech singularity! Amazing! Except, ironically, astronomy is really the ONE field where humans "pausing time" works AGAINST us. The pace of our progress doesn't have time for decades of meticulous observation like astronomers of centuries past. We have to work with much smaller amounts of motion across the sky. And rare events like supernovae are becoming far less frequent in relation to how quickly the rest of science is moving. If the next supernova isn't til 2100, we might have destroyed humanity by then, or be receiving data from Breakthrough Starshot probes. But working backwards and digging deeper into history- be it modern historical records, archaeological finds, the fossil record, etc- is a work-around to the problem of technological progress. It sounds silly, but it's not impossible to say we could construct an army of self-replicating medieval archivists to scour and digitize old libraries, or self-replicating archaeology probes digging deeper and mapping, idk, the microbial fossil record epoch by epoch. Maybe by 2050 these are viable 10-year projects that would provide the astronomers of the tech singularity- who will be tragically frozen in time- with the means to at least go *backwards* in time for the purpose of data collection. 2. TMS: Ok, here's something entirely speculative that I know nothing about, but your speculation about Martin Luther, Goebekli Tempe, etc., and the connection between astronomical phenomena and religious/political thought... Is it insane to think that powerful enough cosmic phenomena could actually influence human thoughts? I mention TMS, transcranial magnetic stimulation, as an example of a proven method by which human mood can be altered by the application of magnetic fields. Could a powerful enough cosmic event strike Earth such that there would be a subtle but widespread mind-altering effect of which we have little direct evidence (that we've looked for thus far). A new star appears and ushers in a jubilee year because everyone's brain is high on serotonin releasing solar flares, or a "dis-aster-ous" sign whips the world into a frenzy of aggression, and multiple unrelated wars happen to break out all over the globe? In any case, this was really the most fascinating thing I have watched in ages, so thank you for a video that is both scientific/informational, but also with enough speculative "woo" to let my mind run in some really cool new ways!

I am enjoying your explanations of these amazing objects. One suggestion: none of this is boring, so why not stop describing some of the phenomena as "boring."

Jason, I have many questions about stellar evolution to ask you. Your videos are fantastic and I really appreciate your work here. Questions: 1) Is it possible that the Planets (Jupiter and others) further out from the Sun 🌞 will survive the stars expulsion of its outer layers forming the planetary nebula? I have never heard of Planets still Orbiting their stellar remnant white dwarf star. 2) Please tell me what establishes a stars identity as an M type, K type, G type, and etc? Is it the stars mass, age, or spectral signature. This is kind of confusing despite the HR Diagram. Thank you sir

Eureka mistake with math though. At around 1 hour 14 minutes, one cubic centimetre of gold weighs a kilogram. Shouldn't it weigh around 20 grams,?

Loving the videos but triggered @3:11:44 as there is no possibility that Gobekli Tepe is merely the start of the neolithic. That is non-sense reminiscent of those that denied plate-tectonics.

Jason ... enjoying your videos, thanks for sharing, they are a lot of fun and knowledge all wrapped-up into a nice bundle. Much appreciated.

Will the pre-supernova neutrino output be detectable with current instruments?

Nice presentation. Learned something new here - that the matter in a star's core is fixed, and does not get mixed in with the H/He of the outer envelope. There is scope here for science fiction stories where stellar engineers rejuvenate older main sequence stars by applying a Cosmic Eggwhisk. (Maybe that was what they were doing in movie Sunshine?). There are aspects of the very low mass stars which are a bit more interesting than you suggest - so a future video to keep the completists happy. There are the lower temp fusion processes involving Deuterium-Deuterium fusion, and some other processes with Lithium. And to contrast the largest possible Jupiter with the smallest Brown Dwarf where some sort of fusion happens.

You are sooooo poetic, that is just fabulous! The stellar evolution as a Beckettian epic, I listen as background reverberation of the poetry of the stars.

do not be afraid to show your face