The Stars: A Celestial Census

A self-checking practice quiz on the stars: measuring stellar mass with binary stars, the range of masses, luminosity and size, the mass-luminosity relation, the Hertzsprung Russell diagram and its regions, and the diversity of stars. Every question is multiple choice and shown one at a time, and the set is drawn fresh each time you take it. At the end you receive a report showing how many you answered correctly.