Filter stars by their Spectral Class (Colour) or their Evolutionary Stage to understand how temperature and luminosity relate.
Luminosity (Brightness) ➜
Temperature (Hot to Cool) ➜
Hot (30,000K)Sun (5,800K)Cool (3,000K)
Spectral Class (Colour & Temp)
Evolutionary Stage
The H-R Diagram
TemperatureVaries
LuminosityVaries
The Hertzsprung-Russell (H-R) diagram is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.
💡 Core Concept: In astronomy, BLUE stars are the Hottest, and RED stars are the Coolest!
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