Stellar Evolution
Links
Astronomy HyperText Book: Stellar Evolution
http://zebu.uoregon.edu/textbook/se.html
From the Electronic Universe Project.
Stellar Evolution
http://www.astunit.com/tutorials/stellar.htm
Stars and the Hertzprung-Russell diagram (where a star's absolute luminosity is plotted against its surface temperature).
Starclock: Stellar Evolution Software
http://leo.astronomy.cz/sclock/sclock.html
Starclock is a program for DOS that animates the evolution of stars on the HR diagram.