Hertzsprung-Russell Diagram

1. Why is the Hertzsprung-Russell diagram important to astronomy?
     *Because it explains star revolution, stages, types, colors, temperatures, and sizes.For us to know the        life cycle so we can prepare for when the star dies

2.what are the two qualities of a star does the HR Diagram measure, and how does the diagram do this?
     * It measures the luminosity and the temperature

3. Where on the diagram would our sun be found?
     *6,000k and 1 Luminosity