Interactive Stellar Evolution - Created By Ivo Todorov

Follow a Star Across the Hertzsprung-Russell Diagram

Choose a stellar mass, advance through discrete evolutionary stages, and watch how temperature, luminosity, and fate shift across the HR diagram.

Mass fixes the path. Reset to explore another star.

HR Diagram

Log-Scaled Luminosity vs. Temperature

Temperature decreases from left to right. Luminosity increases up the axis.

Schematic Hertzsprung-Russell diagram with selectable stellar track Logarithmic plot of luminosity versus surface temperature including main sequence, giant, and dwarf regions.

Axes are logarithmic. Hover or focus the color bands for quick descriptions.