Are stars really different colors?
(Lansing State Journal, September 20, 1995)
All hot objects emit light. The amount and color depends on the size, temperature and composition of the object. The color of stars largely depends on their temperature. The amount of light they emit is proportional to the fourth power of their temperatures ranging from about 5,432 degrees to over 54,032 degrees! Stars with lower temperatures emit mostly long wavelength of light and appear reddish. Those with much higher temperatures emit more short wavelengths and appear blue.