3 Leaving the Main Sequence. Cluster and Galactics Ages. 2 Mass llnwiqml From first-hand Stars. 4 Red Giants and Supergiants. 2 Asymptotic Giant Branch. 1 A Q About White Dwarfs. 8 Core Collapse and Nucleosynthesis. 1 Abundances and Nucleosynthesis. 9 Variable Stars: A Brief Overview.