What can we learn about a star from a life track on an H-R diagram?

how long ago it was born

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when it will die

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where it is located

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what surface temperature and luminosity it will have at each stage of its life

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Solution

The correct option is D what surface temperature and luminosity it will have at each stage of its life
The HertzsprungRussell diagram, abbreviated HR diagram, HR diagram or HRD, is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures. More simply, it plots each star on a graph measuring the star's brightness against its temperature (color).

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