📜 Historical Discovery
Classification Era
Spectral Classification
Year: 1901
Annie Jump Cannon developed the stellar classification system still used today: O, B, A, F, G, K, M. She classified over 350,000 stars by their spectra.
Goal
Classify stars by their spectral type
How to Play
Adjust the star mass slider to explore different stellar types.
Star Mass
1.0 M☉
★ Star Properties
Spectral Class
G2
Temperature
5,778 K
Luminosity
1.0 L☉
Radius
1.0 R☉
MS Lifetime
10 Gyr
Evolutionary Stage
Main Sequence
Final Fate
White Dwarf
Annie Jump Cannon
"I had a passion for the stars."
🏆 Achievements