Sirius: The brightest star in Earth's night sky
— the theoretical final stage of a star's evolution. Scientists study white dwarfs like Sirius B in hopes of gaining a better understanding of the stellar cycle. Eventually, Earth's sun will cycle to the white dwarf stage as well.mass of a star
is an important factor in the object's stellar evolution, because it determines the star's core temperature and how long and hot the star will burn. Astronomers can calculate the mass of a star based on its brightness, or luminosity, but this was challenging for Sirius B.
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