What causes the primary difficulty when estimating the age of an individual, solitary star?

Answer

The ambiguity and uncertainty in determining its initial mass.

Because initial mass dictates the entire stellar timeline, any uncertainty in calculating that initial mass directly leads to uncertainty in the final calculated age.

What causes the primary difficulty when estimating the age of an individual, solitary star?

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How Do We Measure the Ages of Stars? With Astrophysicist Ruth ...

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