Uploaded May 2023 | Updated September 2026, 2 weeks ago

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Guest Speaker: Sonja Panjkov, University of Melbourn
Summary: The way that a star is going to die is determined by big it is when it was born. A star is considered massive if its mass is greater than 8 solar masses. Massive stars live fast and die young. With massive stars, hydrogen burning leads quickly to helium burning. This increases the core temperature, and the star expands, thus cooling the outer layers. At this point, the star evolves into a red supergiant. Once helium fusion stops, the star's core collapses and creates a supernova. This is called a “core-collapse supernova,” which creates either a neutron star or a black hole, depending on the mass. The remnants of these stars can be very beautiful. Examples of such supernova remnants are the Crab Nebula, Tycho SN, and 1987A SN.
If you are interested in how stars evolve and die, this video will help you better understand these objects. We hope you enjoy it!

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Chapters
Chapters
0:00 Introduction
1:33 Stellar evolution
2:30 Massive star death greater than 8SM
7:35 Fate of Small Stars less than 8SM
10:58 Type IA supernovae
12:30 Supernova facts
14:21 Supernova remnants
15:35 Why study supernova remnants?
19:41 Three main populations of supernova remnants
21:36 Small Magellanic Clouds (SMC)
24:28 X-ray emission from remnants
27:16 Chandra X-ray Observatory
28:37 Studying remnants
30:17 Studying asymmetries
33:14 Poll Question
36:36 Studying remnants in the SMC
43:45 Comparing SMC remnants to other galaxies
47:15 Summary

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