Chapter 12 STELLAR EVOLUTION

        Section 12-1 The Main Sequence
        - Read p 248 (read the section "The Life Expectancies of Stars")
        - Study Figures 12-5
        - Study Table 12-2

        Summary 
        - Sec 12-1 bullet 9  (of 9)

        New Terms: 
        - zero-age main sequence (ZAM)