The Life and Death of Stars: White Dwarfs, Supernovae, Neutron Stars, and Black Holes

We've learned how stars form, and we've gone over some different types of stars, like main sequence stars, red giants, and white dwarfs. But a star will move between these categories over its lifetime. How does that happen, exactly? And what is leftover when a star dies? A white dwarf? A neutron star? A black hole? What are these objects? Let's answer all of these questions and more by analyzing the life cycle of a few different star types!

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[mayastaples]

as a member of the hard of hearing community, i must say that i really appreciate you captioning your videos! i have an audio processing disorder so its really hard for me to understand and process spoken information and speech. you can imagine that makes it really hard for me to learn what i need to at school, and so i supplement with a lot of youtube videos. it's so hard for me to find good material that doesn't just have auto-generated captions. thanks for being inclusive of all your audience :)

[jeffreysmith]

Professor Dave, that’s the best H-R diagram description I’ve ever seen! Most H-R discussions are simply temperature vs mass explanations. You correctly make it a “roadmap” for the life of high/low mass stars. Even textbooks I’ve read don’t make that connection.

[liztcalistre]

In these 16 minutes I managed to understand what my science teacher couldn't teach me in 3 weeks tysm

[ZaWakingEagle]

Not only is the content super interesting, you do a great job at explaining it! I love this!

[gdiaz]

This is incredibly helpful for my astronomy class this summer. You managed to take around 4 weeks of information, with all lecture videos coming to a total of about 5 hours, and condensed it into a much more comprehensive video with better visuals that is under 20 minutes. Absolutely amazing and I thank you so much for this.

[extartempore]

Girl: tell me something romantic
Guy: you are as rare as the element with atomic number greater than 26

[TheBsheep]

I've heard a star's life cycle dozens of time but this is by FAR my favorite tutorial!!!! Very informative.

[michaelpisciarino]

0:58 Lifetime of Stars
1:39 Nuclear Collision, Nuclear Fusion
2:34 Low Mass Star
4:24 Hydrogen gone, outer layers pushed out, ----> Red Giant for 1 million years
5:00 Helium Flash
5:30 Burning Helium, entering the Horizontal Branch

7:06 High Mass Stars. Big Stars goes out with a Bang! 7:40 Hotter Star, Faster Fusion Quicker Burning
8:25 Layered fusion, to a Core of Iron Nuclei, EXPLOSION

13:20 Collapse Into A Black Hole
- Warps Space Time - Consumes Light -The Remnants of Huge Dead Stars

14:47 The Stellar Life Cycle

[archiefromuno]

I think the worst part of denying science is that you can’t appreciate how cool the existence of all this is

[zerokmatrix]

I think this is aimed at kids, and despite being an adult with a lifelong interest in science and astronomy and having an above-average level knowledge of both, I find these videos extremely entertaining and chocked full of facts I had forgotten or didn't even know in the first place.
This channel definitely deserves better recognition and more subscribers.
My friend has just had a baby and this is one of the channels I'll recommend he lets his kid watch while growing up

[anirbandutta]

It's very hard to explain complex things in simple ways. And you have just done that! Kudos!

[dongato]

I've never heard it explained so simply, clearly, and beautifully. Thank you so much. Subscribed!

[remitoinfinity]

Every time I come here I'd get so fascinated by not just the facts but also by how easily understandable Dave delivers the topic, to the point that I feel so eager to click the like button right after watching, only to find that I've liked it already!

[stewiegrif]

I'm working through your course right now Dave, and I wanted to let you know that this is such a beautifully constructed course. It blends a perfect balance between being detailed, but not overly complex, and maintains a phenomenal sense of flow. You explain things in such a way that it captures the true essence of the concept, yet also leaves room to explore other pieces of it in more detail. I always leave a chapter feeling like I learned something really cool, and I feel like I'm growing after each video. This series really means a lot to me, and I'm very happy to have found it!

[allo]

He deserves a million subscribers. He’s a very hard worker

[Lightgreen]

It took my teacher like the entire science class (45 min) to explain the same information. Keep it up!

[anthroposlogica]

Professor Dave. I am a student of Anthropology and i never thought in a million years i could understand astronomy. I picked it up half a year ago to fill a hobby. and you have made it so easy and fascinating to study, i always take to my telescope after your videos man. Thanks a ton

[johnrupesh]

Closed the video without hitting the like button so came back specifically to do that. This video deserves it.

[raffiathblaze]

2018: "its impossible to see a black hole"
2019: "We made a photo of a black hole"

[quahntasy]

Dave is such a nice explainer. He deserves a million subs