If you measure the average brightness and pulsation period of a classical Cepheid variable star, you can also determine its

Name: If you measure the average brightness and pulsation period of a classical Cepheid variable star, you can also determine its
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The period-luminosity relationship for Cepheid variable stars allows astronomers to determine their absolute magnitude, and by comparing it to the apparent magnitude, the distance to the star can be calculated.

If You Measure the Average Brightness and Pulsation Period of a Classical