Just as a bit of a warning. This is a remaster of a video that was done in a loud room with a big air vent and A/C unit. I cleaned it up the best I could, and I also had to do some punch-ins with some updates. They'll be different enough to be quite noticeable. Some day I'll have to do a full re-recording of this video.
The information you bring massively enharnces my understanding and tweaks my imagination that I find fulfilling. If only I was years younger and able to attend your lectures to gain a qualification in Astro-physics? No matter, you hit my intellectual spot and I appreciate it very much. Thank you.
As a human named Orion, I tend to absorb anything relating to my constellation. In my 32 years of absorbing info, I had no clue my right shoulder looked like that when fully zoomed out on it as an individual thing. It looks like it's been blowing off pieces of itself for a while.
When Betelgeuse begins fusing elements heavier than carbon, will the increase in neutrino emissions be detectable with existing neutrino detectors? Of course, that’s assuming it happens soon.
That's a good question but the only neutrinos that are currently visible to new trying to observatories here are from the Sun and the ones that happened from supernova 1987a
Mr Kendal, is it possible that a huge protostar bigger than 250 solar masses could collapse down to a black hole directly due to the immense gravitational force?
That is the idea of Population III stars, or the very first ones. With no metallicity, these stars would be H->He only at extremely high rates. I'll eventually do a video on them, too...
So heating via release of gravitational potential energy is what triggers fusion in the core? If the core contracted slowly enough to release that energy, would fusion not trigger, or is there a point where rising pressure alone would suffice? If the former I assume the star would simply collapse into a neutron star or black hole.
Great video. Sooo... neutrinos. For Betelgeuse, would these be detectable with current observatories, and are the energies of the neutrinos released by each fusion stage different and detectable? Ta.
@@JasonKendallAstronomer Thanks. So when Betelgeuse (or Eta Carinae) goes pop, there should be a hail of neutrinos and presumably this will offer enormous insights into the exact mechanism of core collapse?
Just as a bit of a warning. This is a remaster of a video that was done in a loud room with a big air vent and A/C unit. I cleaned it up the best I could, and I also had to do some punch-ins with some updates. They'll be different enough to be quite noticeable. Some day I'll have to do a full re-recording of this video.
The information you bring massively enharnces my understanding and tweaks my imagination that I find fulfilling. If only I was years younger and able to attend your lectures to gain a qualification in Astro-physics?
No matter, you hit my intellectual spot and I appreciate it very much. Thank you.
Didn't fully realise the weakforce bosons were so prevellent and recycling everything so often and efficiently. It is a WOW lecture sir, thank you.
Thanks. That was really interesting. I look forward to next time.
As a human named Orion, I tend to absorb anything relating to my constellation. In my 32 years of absorbing info, I had no clue my right shoulder looked like that when fully zoomed out on it as an individual thing. It looks like it's been blowing off pieces of itself for a while.
Attack ships on fire off the shoulders of Orion
Dammit man! It's late, and I should be sleeping; but I've got to watch this.... and you end it on a *cliffhanger!?!?* 😂 you're killing me! 😂
Always do….
Thank you Jason, you've kept me informed for years, keeps the old college brain cells working.
When nuclear physics intersects with astronomy it just blows my mind.
I mean, stars are big, nuclei are small and it's just this crazy situation.
Excellent! I learnt soooo much.
When Betelgeuse begins fusing elements heavier than carbon, will the increase in neutrino emissions be detectable with existing neutrino detectors? Of course, that’s assuming it happens soon.
That's a good question but the only neutrinos that are currently visible to new trying to observatories here are from the Sun and the ones that happened from supernova 1987a
There is a rare spectral type *O* main sequence star (O9.5V) visable to the naked eye: Zeta Ophiuchi.
wow, so good. subscribed
great vid!
Great video, but I'm wondering if a big enought an H bomb (or a particle accelerator) could trigger the C and N atomic sequence on our atmosphere.
Mr Kendal, is it possible that a huge protostar bigger than 250 solar masses could collapse down to a black hole directly due to the immense gravitational force?
That is the idea of Population III stars, or the very first ones. With no metallicity, these stars would be H->He only at extremely high rates. I'll eventually do a video on them, too...
So heating via release of gravitational potential energy is what triggers fusion in the core? If the core contracted slowly enough to release that energy, would fusion not trigger, or is there a point where rising pressure alone would suffice? If the former I assume the star would simply collapse into a neutron star or black hole.
Great video. Sooo... neutrinos. For Betelgeuse, would these be detectable with current observatories, and are the energies of the neutrinos released by each fusion stage different and detectable? Ta.
Yes, absolutely
@@JasonKendallAstronomer Thanks. So when Betelgeuse (or Eta Carinae) goes pop, there should be a hail of neutrinos and presumably this will offer enormous insights into the exact mechanism of core collapse?
Or, "When that astronomical object be thicc"
One question, at 1-2 Billion Kelvin burning SUPER GIANTs at such densities, shouldn’t it be called HIGH ENERGY PLASMA’s vs. a gas at it’s core?😊
AAVSO membership is $95 per year.
Thanks for the correction!
I love your lectures, but you need a proper microphone. The audio splicing at 18:00 was really, REALLY bad.
What I need to do is re-record this whole video.