[ad_1] The Hertzsprung-Russell diagram is used to classify stars based on their color/heat and absolute magnitude/luminosity. Stars group into main sequence (dwarfs), white dwarfs, subgiants, giants, and supergiants. The diagram also shows the standard names for stars. The Hertzsprung-Russell diagram is a tool used by astronomers and astrophysicists to classify different types of stars. It […]