The colour of the star is an indication of its (a) Distance from the earth (b) Distance from the sun
The colour of the star is an indication of its
(a) Distance from the earth
(b) Distance from the sun
(c) Temperature
(d) Luminosity
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(c) The colour of the star is an indication of its temperature. The glowing is caused by something called Black-Body radiation, which has to do with the heat energy trying to radiate away in more and more energetic wavelengths. Red stars are relatively cool at only a few thousand degrees Celsius, white stars are hot at about ten thousand degrees, and blue stars are the hottest.
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