Final answer:
The color of a star is determined by its surface temperature, composition of elements, and to a lesser extent, its mass.
Step-by-step explanation:
The color of a star is determined by its surface temperature, composition of elements, and to a lesser extent, its mass. Different surface temperatures result in different colors - a hotter star appears blue, while a cooler star appears red. The composition of elements in a star affects its spectrum and therefore its color. For example, a star rich in hydrogen will appear yellow, while a star rich in helium may appear bluish. Mass also plays a role in determining a star's color, with more massive stars being bluer and less massive stars being redder.
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