---

• The Helium Core
  
  
• Giants and Supergiants on the HR Diagram
  
  
• Examples of Stellar Clusters
  
  
• A Time Dependent Cluster HR Diagram (load ClusterTurnoff.swf)
  (there's a small error in this animation; can you find it?)
  
  
• Examples of Real Cluster Snapshot HR Diagrams
  
  
• The Post Main Sequence Evolution of a Low Mass Star
  
  
• The Interior of a One Solar Mass Star over time (load HiLoStars.swf)
  
  
• Planetary Nebulae and Sirius B, a White Dwarf
  
  
• The James Webb Space Telescope's view of the Ring Nebula Wow!
  
  
• The Death of the Sun and the End of the Earth
  
  
• The CNO Hydrogen Fusion Cycle
  
  
• Shrek tells us about the interior structure of a fully evolved high mass star - Donkey doesn't get it.
  
  
• The Interior of a Fully Evolved Massive Star - to scale
  
  
• Supergiant Stars on the HR Diagram
  
  
• The Interior of a Twenty Solar Mass Star over time (load HiLoStars.swf)
  
  
• Iron, the most stable nucleus
  
  
• Inverse Beta Decay - electron and proton making neutron and neutrino.
  
  
• An artist's depiction of what a Type II supernova does to the rest of the star
  
  
• Typical Supernovae Lightcurves
  
  
• A bright Type Ia Supernova in another galaxy
  
  
• The Crab Nebula, a Remnant from the 1054 AD Supernova; seen by Hubble and Webb
  
  
• Supernova 1987a Before and After
  
  
• The Interior of a Fully Evolved Massive Star - to scale
  
  
• A Beautiful Image of Orion and Betelgeuse
  
  
• Betelgeuse SN - How the Universe Works . . . A really excellent summary (~9 min); play at least to ~2m30s
  This is a clip from an episode of How the Universe Works. You can watch the Full Video on Daily Motion. It's a bit dated, but pretty good
  
  

---