INSIDE A SUPERNOVA - What Happens Before a Star Explodes

Hello and welcome to What Da Math!
In this video, we will talk about supernovae

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[jeffytalon]

I don’t know why, but before I watched you on a daily basis, I couldn’t watch a whole space video, but after watching 2-3, I can’t stop watching them. You’re the best astronomy YouTube there is, you make hard to understand concepts, very simple. You are talented Anton, great at teaching too.

[jlacktiger]

Watching your videos is just like a ritual for me at this point 😂😂 I just have to watch them

[AB-umdl]

"The Antonaut", back at it with another 👍

[polyrhythmia]

Amazing how fast that huge amount mass moves around, and all this motion in no more than a half second. Should produce massive amount of gravitational waves.

[vanessam.]

I've been binge watching your videos for three days! You explain everything so well that I can follow even if I've never been any good in maths of physics. Thank you so much for making these wonderful videos!!

[CloudAerisSephiroth]

a little bit of the old cosmic ultraviolence.

amazing video, thanks!

[rocktcatU]

Basically the same happens with Uranus after a visit to Taco Bell.

[Stonnin]

Does this event determine what the resulting nebula will look like? That would be really cool as I always wondered why nebulas arent just perfect spheres with matter flung equally in all directions.

[willsee]

5:57 - "Many neutron stars and many pulsars and many black holes are probably moving at very high velocities of hundreds of thousands of kilometers per second." - yeah, sure Anton, hundreds of thousands of km/s when the speed of light is 300 000km/s. You don't often think about what you are going to say, don't you? And you don't even think about what you just said, obviously.

[dilajintz-idealcollective]

Two things you'll hear in 100% of Anton's videos, in the first 2 sentences. "Hello wonderful person" and "This is basically..." Haha. But you're the man. Thanks for doing these videos

[Kevin_Street]

Standing accretion shock instability... awesome! Thanks once again for a great video that really teaches us something new. The environment inside that star is just unimaginable, with those huge waves travelling near the speed of light, smashing into each other, flowing together and apart... Wow.

[Harzexe]

The background music makes it perfect! Spooky science :D

[lucaswolgast]

Love it
Your videos are always something like a good night video. After watching it I usually think about it for some time until I fall asleep. The funny thing is that I almost always keep anything.
Please do more videos about neutron stars and unusual places in the universe :)

[istvanandras]

How casually you say : "it will take me 400years". Keep up the good work :)

[rJaune]

Could all that internal churn lead to the creation of noticeable gravitational waves?

[Sarah.Riedel]

...I'm sorry you got me at "hundreds of thousands of kilometers per second" 😮

[imienazwisko]

I don't think that simulation was of an entire star. I dont think massive stars are 100 km in radius.

It was probably a simulation of just the core.

[mrfrosty]

I liked the visualisation. It looked like something writhing around trying to both tear itself apart and keep itself together at the same time. Eventually ripping a whole in space for a moment. That is how my completely unscientific and undereducated brain interpreted it anyway.

[willsee]

5:01 - And what about SN1987A in LMC? But anyway, we will never see this, because it is hidden deep in the star, obviously!

[oporim]

Once the core of the star collapses, first electrons fall onto nuclei and combine with protons into neutrons. The core becomes much smaller and outer layers of the star accelerate towards it. If the pressure of outer layers on neutrons is too big, neutrons will collapse themselves into a "void", with more neutrons bombarding eachother like in a particle accelerator, they disintergrate into prime elements leaving behind a void which has a mass but no volumetric matter that pushes back. Neutrons and other particles keep accelerating into and through this void, disintegrating, increasing the mass of the void.
What I see in this video is outer layers of the star falling towards the center with something like 3% of light speed, but due to assymetry of the star, the plumes of matter in some places do not reach the "void" but instead turn around and shoot back towards the surface because of pressure of other matter falling towards the void. This then creates vortices of matter shooting into and out from the core, meanwhile the void is becoming larger in mass until event horizon forms.