Star color is a guide to its temperature ?

Yes, the color of a star is directly related to its temperature. Stars emit light in a range of colors, with cooler stars appearing red or orange, and hotter stars appearing blue or white. This is due to the fact that hotter objects emit more energy at shorter wavelengths, which corresponds to bluer colors, while cooler objects emit more energy at longer wavelengths, which corresponds to redder colors. By observing the color of a star, astronomers can estimate its temperature and classify it into different spectral types.

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