Astronomy Quiz
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STARS & STELLAR EVOLUTION
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An astronomer uses the period-luminosity relationship of a Cepheid variable to determine its luminosity is 104L⊙. They measure its apparent brightness and calculate a distance of 10 kpc. Later, they discover a dense cloud of interstellar dust along the line of sight that was not accounted for. How does the true distance to the Cepheid compare to the initially calculated 10 kpc?
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