_ Why is the Hertzsprung - Russell Diagram important to astronomy?
Astronomers are able to determine these values and many other characteristics that are of interest to both the scientists and public.
_What are the two qualities of a star does the HR Diagram measure, and how does the diagram do this?
It plots the luminosity and temperature.
_Where on the diagram would our sun be found?
The sun would be found around the 5,000 K and 5 + magnitude.
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