Q No. 24, Which factor affects the brightness of the stars? a) Distance from earth ) c) Shape of star d) Size of star b) Distance from sun
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The apparent brightness of a star depends on both its luminosity and its distance from Earth. Thus, the determination of apparent brightness and measurement of the distance to a star provide enough information to calculate its luminosity
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Three factors control the brightness of a star as seen from Earth: how big it is, how hot it is, and how far away it is. Magnitude is the measure of a star's brightness.
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