What crucial relationship did Henrietta Swan Leavitt discover regarding Cepheid variables?
Answer
The longer the pulsation period, the brighter the star is intrinsically.
Henrietta Swan Leavitt discovered a direct relationship between a Cepheid’s pulsation period and its true luminosity: the longer the period, the brighter the star is intrinsically.
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How Scientists Measure The Distance To Stars and Galaxies
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