Remarks

To create this interactive we used data from real stellar evolution models. The data (http://pleiadi.pd.astro.it/#data7) did NOT show the complete evolution for all stars. Thus there are evolutionary phases after the last point in the interactive (the Red Giant Branch) which we can not show here. You should consult your textbook to learn more about these later stages of evolution (like the planetary nebula and white dwarf phases).

Also these models were run for stars that had no "metals", meaning no elements other than those created in the big bang. That means these stars have slightly different histories than those we see in the disk of the Milky Way including the loops seen early in the Red Giant phase for some of the stars.

One other point to note is that we have shifted the colors a bit to the red to emphasize that stellar colors change with time. In reality the stars shown in this interactive would appear more blue on the sky.