The brightest stars are first-magnitude stars while those just visible to the human eyes are sixth-magnitude stars.

最亮的星球是一等星，那些肉眼刚能看见的星球算是六等星。

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Its most noticeable star pattern is the Great Square of Pegasus: four second magnitude stars marking the body of the horse.

它最明显的图案是飞马座大四边形：即构成飞马躯体的四颗二等星。

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The faintest star you can see with your unaided eye is about sixth magnitude (from dark skies) whereas the brightest stars are magnitude zero (or even a negative number).

你用肉眼所能看到的最暗的星的亮度值大约是第6级(如果是黑夜的话)，而最亮的星的亮度值是0(更有甚者其亮度值为负)。

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Duncan, Ginobili and Parker are stars of that magnitude and Thursday was the Spurs only visit to Miami this year, barring an NBA Finals match-up.

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It is similar to a Hertzsprung-Russell (HR) diagram but the latter plots luminosity (or absolute magnitude) rather than just apparent brightness and a knowledge of the distances of the stars plotted is also needed.

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