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zakruti.com » Knowledge, science, education » TED-Ed
How to detect a supernova - Samantha Kuula

How to detect a supernova - Samantha Kuula

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Rating: 4.0; Vote: 1
Just now, somewhere in the universe, a star exploded. In fact, a supernova occurs every second or so in the observable universe. Yet, weve never actually been able to watch a supernova in its first violent moments. Is early detection possible? Samantha Kuula details the science behind an early supernova warning system. Lesson by Samantha Kuula
Date: 2020-08-22

Comments and reviews: 10


Wait, so if the photons were emitted at the surface, wouldn't that overtake the neutrino? So we see the surface of the star taking change because the photons on the photosphere of that star don't need to travel through anything (except the interstellar medium) to reach us. How does this work? We only receive the neutrinos from the core, not from the photosphere of that star. If that's the case, how does SNEWS tell us beforehand?
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4% scientific interest in my Brain says: Wow! Interesing to observe!
6% of logic says: Dude, what Energy, what a potential energy!
9% of fascination thinks 'What an awesome opportunity to be part of something bigger! '
81% of the child in me liking Things blowing up just thinks Whooooooa! BOOOOOOM! Coooool!

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We have seen supernovae ever since the first humans lived. Now yes we have seen it thousands of years after the actual supernovae because of no telescopes that could make us see anything hundreds of light years away.
But still the video is saying that we haven't seen supernovae which is just plain wrong.

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What makes them so rarely detected, having the last one only in 1987? If they happen approx. every second in our observable universe, if our tech is perfect, we should detect all of them. But of course, our tech isn't perfect, but why such a large discrepancy, to the point of such rare detection?
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No _living_ human has seen, perhaps, but Historical accounts clearly detail a number of them. The one that gave rise to the Crab Nebula was documented by the Chinese in 1054, for example.
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We once had a cat, it's name was Nova. My sister name one of her stuffed cat after that cat. We now pretend that she is an auther and her most famous book is the super hero Super Nova.
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Another video that exceeded what was expected from the title (the other was 'Sunlight is way older than you think - Sten Odenwald'.
Great job! Loving your videos!

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A simple correction:
Explosions cannot occur in space, as there isn't enough Oxygen. Expansion is the correct term. Everything else was on point.

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By the way what if black holes we're created from the super pressure of specific particles after the initial exertion of the nuclear meltdown
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This is AMAZING! Cant wait to see what the astronomy community will bring us!
-you dont know it, but you are full of stars JFK

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