Absolute magnitude _____.
measures only luminosity
measures both luminosity and distance
represents how bright a star looks from Earth
describes a star's brightness in comparison to the sun
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Stars that are closer to Earth, but fainter, could appear brighter than far more luminous ones that are far away. ... Another measure of brightness is luminosity, which is the power of a star — the amount of energy (light) that a star emits from its surface.
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