The colour of a star is an indication of its ________________.
A
distance from the sun
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B
luminosity
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C
distance from the earth
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D
temperature
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Solution
The correct option is D temperature The color of a star mostly indicates a star's temperature, and it can also suggest the star's age. Class O stars, which are blue in color, are the hottest, and class M stars, which are red in color, are the coldest.