Evolution of High Mass Stars

High-mass stars are the flashy parts of Stellar Evolution. We see the speedy and violent stellar nucleosynthesis that occurs inside their cores. These extremely rare supergiant stars live short lives and make a lot of stuff. High-mass stars evolve much more rapidly, and their endings are extraordinary. They are responsible for many of the elements that make up your body! This is part of my complete intro Astronomy class that I taught at Willam Paterson University and CUNY Hunter.

Stellar Evolution: https://en.wikipedia.org/wiki/Stellar_evolution
Stellar nucleosynthesis: https://en.wikipedia.org/wiki/Stellar_nucleosynthesis
Nucleosynthesis: https://en.wikipedia.org/wiki/Nucleosynthesis
Supergiant star: https://en.wikipedia.org/wiki/Supergiant_star
Planetary Nebula: https://en.wikipedia.org/wiki/Planetary_nebula
Nuclear binding energy: https://en.wikipedia.org/wiki/Nuclear_binding_energy
Iron Peak: https://en.wikipedia.org/wiki/Iron_peak

0:00 Introduction
0:33 All stars are born, live and die
1:28 Life Cycles of Stars
2:54 Red Giants in the Sky
6:37 Betelgeuse is a Rare Star
7:30 Betelgeuse's Vital Stats
9:35 Betelgeuse's Portrait
14:47 The Sizes of Stars
15:27 The Proton-Proton Chain?
15:58 CNO Cycle is for Massive, Hotter stars...
19:47 No Party Lasts Forever...
22:47 No Helium Flash Photography Please
23:25 Blue Supergiant
25:00 Helium Core Exhaustion
27:23 Carbon Burning
29:58 Intermediate Mass Stars
31:21 High Mass Stars: Greater than 8 times Mo
32:42 Neon Burning
34:52 Oxygen Burning
36:31 Silicon Burning
39:12 The Iron Peak
40:47 The Ends of the Roads