High Mass Stars: Crash Course Astronomy #31

Great! Thankyou!

Life Cycle of the Massive Star:

Protostar > O, B, or A type main sequence star > Red Super giant > Helium Burning Super giant > Second bigger Super giant > Type ii Supernova > Neutron Star > Pulsar or Magnetar or stellar Black hole > X ray emission.

what does the iron fuse into?

year 1054 ? are you sure ?

Waitwaitwaitwait, so Rigel is pronounced like "Nigel"?
What the fu-

For a star about 20 times the mass of the Sun it will take 1 DAY for silicon to fuse.


You're welcome
IYKYK

LMaoo something else will kill you

how do stars get their elements for nuclear fusion?

How do we know that a star could go through all of its oxygen in a year and silica in a day? Not like we can observe this so how do we know it to be true?

TL;DR : according to stars, iron sucks






no pun intended

Well as I am able to squeeze A LOT of mass into my core at a high level in the amount of food I can get in my mouth and stomach without knowing how to stop, i’m not sure if I classify as a high mass star or approach rivalry on a now black hole of infinite mass in dense singularity point as I do warp space time nowadays. Universe does work in mysterious ways 🤷🏻‍♀️

wait, if stars less than 20 times the mass of the sun become neutron stars, will betelgeuse and uy scuti become those?

So stars have layers.. Shriek is a star?

It is unnecessary to say 'very very' and 'big big.'

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Again where is God in all this?

ONIONS HAVE LAYERS!!

Wait...
H-1 => He-2 => C-6???

Did y'all see that last review point: relax, something else will kill you
like damn

I love how he speaks in both English and ASL

I have a question if a Black Hole was approaching a star just as it went supernova would the force the star explodes be strong enough to push The Black Hole back?

I love CRASH COURSE ASTRONOMY

I'm British, and American accents usually irritate me but I could listen to this guy all day. Enthusiasm rocks!

Driplord phil w the tropical swag

singular = supernov-ah; plural = supernov-aye

Just one doubt,,,vy canis majoris is bigger or smaller than uy scuti?

We are made out of star stuff. Which is awesome!

If we came from a supernova then is more life out there.

RIGELLLL WOOOOOOOOO YESSS LETS GO RIGEL I LOVE YOUUUUUUUUU my fav star <3 :)

5 stars ;)

We are all Stars then!

Onions!!

Supernova are so interesting

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"relax, something else will kill you!"
love this series

In a way all of us are post martem legacy of a giant star

Phil… What an absolute Legend.

Your astronomy/ cosmology series is outstanding, Dr. Phil. You provide a wonderful information in an interesting and easy to comprehend manner and your delivery is impecable. Thank you for sharing such interesting information and for making knowledge of science fun and entertaining. You're the best!

are you telliing me we can fuse neon to make oxygen and then we can defuse the sillicon to get even more oxygen wowwwww

so stars have oxygen

I thought neutron star collisions is where most of this material comes from not super novae is this a new thing since this video was out or am I wrong?

You should do a vid on one of the rarest types of stars;
Yellow Hypergiants specifically HR5171a its slightly bigger than Betelguese but its yellow
Pretty cool right

Thanks! But I get really tired of having to translate words, talking heads, and hand waving into models that contain ALL the information and processes you describe. I do not want entertainment, rather tools to help remember and explore all that is possible, all that really happens, or could happen.   Richard Collins, The Internet Foundation

Is it really that unlikely that Earth will be affected by a nearby supernova? I've heard that they found the iron isotopes from supernova remnants on Earth and the Moon, indicating that we had actually been blanketed by supernova remnants from more than one supernova in the last 10 million years. The most recent one may have occurred while humans were on the planet, and had huge consequences for us back then. It seems a lot less unlikely when you consider that we may have already had to deal with it once in our species' history.

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So we are the child of the stars.....

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The best astronomy teacher!❤