The hottest and brightest stars in the galaxy are also the rarest. Known as class “O,” they account for about one of every 10 million stars. Yet they are so dazzling that several of them are visible to the unaided eye.
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The hottest and brightest stars in the galaxy are also the rarest. Known as class “O,” they account for about one of every 10 million stars. Yet they are so dazzling that several of them are visible to the unaided eye.