what color are the coolest stars?
The color of a star comes from its temperature. The coolest stars appear red, while the hottest stars are blue. And for a star, the only thing that defines the temperature of â¦a star is its mass. Blue stars are stars that have at least 3 times the mass of the Sun and up.
Blue stars are the hottest whilst black dwarfs are the coldest. (However, no black dwarfs exist yet - see related question) The stellar classification [See link] in order of temperature. Our Sun is classed as yellow.