Question

How stars change their colour?​

Answer 1

Answer:

As the light from the stars comes through the earth's atmosphere, they appear to be twinkling. ... This makes the cooler stars appear red and the stars with the higher temperatures appear blue or white. From cool to hot, the colors can appear red, orange, yellow, green and blue.

Explanation:

Answer 2

Answer: The other major factor effecting a star's color is its temperature. As stars increase in heat, the overall radiated energy increases, and the peak of the curve moves to shorter wavelengths. In other words, as a star becomes hotter, the light it emits is pushed further and further towards the blue end of the spectrum.
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