The Blue stars are the hottest stars with surface temperatures between 10,000 K and 50,000 K.
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Stars have different colors like white, yellow or red, and blue. Generally, the composition of each star is the same.
blue stars are made of hydrogen with 75 %and helium with 75% and some amounts of other elements.
The color of a star depends on its temperature. The temperature of any star on its mass . The blue star has maximum mass. An example of a blue star is the Rigel star, it is the brightest star.
Hence blue stars are the hottest stars due to their mass and surface temperature.
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