even southern europe is a lot further north than china and new mexico - the supernova was probably behind the sun on july 4th and yeah, we were probably too hungover from partying like it was 999 to notice even when it did appear. harold - there are two suns! yeah, that's why you're called ethelred the drunk - you see two of everything...
Aloha Brian! Great work and presentation! New subscriber, and there should be many others soon! Can't wait to see if you have more vids. Thanks so much!
And still there are astrophysicists that say a neutron star only forms with stars that have a core mass of 1.4 to less than 3 solar masses, and an overall solar mass between 10 to 40 solar masses. And that black holes only form when the mass of the core is above 3 solar masses and the overall mass of the star is above 40 solar masses. Of course other astrophysicists also say different things. Some say that a star only has a 100% chance of becoming a black hole when the star has 60 solar masses and more. I've even seen astrophysicists say that the difference in mass between what is necessary to get a supernova and a collapstar is exactly the same, when most say it's not. So for the most part it seems that these numbers are more or less theoretical. At least when it comes to neutron stars and black holes. Because you can read 20 articles and the 20 will have different numbers.
The progenitor stars are rarer for the theoretically higher mass neutron stars, which might be why they haven't been observed... not because there's something wrong with the theory!
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That is the single best full description of high mass stellar life cycle I have seen to date... Bravo sir! 👏
if Sean Carrol isn't available for narration of a project, you would be a great substitute.
even southern europe is a lot further north than china and new mexico - the supernova was probably behind the sun on july 4th and yeah, we were probably too hungover from partying like it was 999 to notice even when it did appear. harold - there are two suns! yeah, that's why you're called ethelred the drunk - you see two of everything...
BRIAN-you should do some re-uploads and retittle some of these with the recent interest in Betelgeuse.
Aloha Brian! Great work and presentation! New subscriber, and there should be many others soon! Can't wait to see if you have more vids. Thanks so much!
also, i'm not convinced about the chaco canyon thing.
it's far more likely to mean: this was rock was carved out by the night shift....
And still there are astrophysicists that say a neutron star only forms with stars that have a core mass of 1.4 to less than 3 solar masses, and an overall solar mass between 10 to 40 solar masses. And that black holes only form when the mass of the core is above 3 solar masses and the overall mass of the star is above 40 solar masses.
Of course other astrophysicists also say different things. Some say that a star only has a 100% chance of becoming a black hole when the star has 60 solar masses and more. I've even seen astrophysicists say that the difference in mass between what is necessary to get a supernova and a collapstar is exactly the same, when most say it's not.
So for the most part it seems that these numbers are more or less theoretical. At least when it comes to neutron stars and black holes. Because you can read 20 articles and the 20 will have different numbers.
The progenitor stars are rarer for the theoretically higher mass neutron stars, which might be why they haven't been observed... not because there's something wrong with the theory!