The Life and Death of Massive Stars

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Күн бұрын

Пікірлер: 29

@JasonKendallAstronomer 10 ай бұрын

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.

@noelstarchild Ай бұрын

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.

@noelstarchild 10 ай бұрын

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.

@playgroundchooser 10 ай бұрын

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! 😂

@JasonKendallAstronomer 8 ай бұрын

Always do….

@thetobi583 10 ай бұрын

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.

@weedmanwestvancouverbc9266 10 ай бұрын

Attack ships on fire off the shoulders of Orion

@mrpocock 10 ай бұрын

Thanks. That was really interesting. I look forward to next time.

@paulmicks7097 10 ай бұрын

Thank you Jason, you've kept me informed for years, keeps the old college brain cells working.

@bryandraughn9830 10 ай бұрын

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.

@petervisor 10 ай бұрын

Excellent! I learnt soooo much.

@douglaswilkinson5700 10 ай бұрын

There is a rare spectral type *O* main sequence star (O9.5V) visable to the naked eye: Zeta Ophiuchi.

@SirDeadPuppy 10 ай бұрын

great vid!

@aerobique 10 ай бұрын

wow, so good. subscribed

@markj3118 10 ай бұрын

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.

@weedmanwestvancouverbc9266 10 ай бұрын

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

@LuisMailhos 10 ай бұрын

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.

@garethdean6382 10 ай бұрын

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.

@johnmann6866 2 ай бұрын

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 2 ай бұрын

Yes, absolutely

@johnmann6866 2 ай бұрын

@@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?

@ventsislav1796 3 ай бұрын

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?

@JasonKendallAstronomer 3 ай бұрын

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...