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Wolf-Rayet star

Wolf-Rayet stars are evolved, hot, massive stars, that exhibit high mass-loss caused by strong stellar winds. Consequently, they are short-lived, and therefore rare. The surface composition is usually mainly helium based with characteristic broad emission lines of carbon, nitrogen or oxygen.



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... in the individual. Two brown-eyed parents may be heterozygous for the eye color allele and end up having a child with the blue eyed phenotype. In plain English, ...