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。
The brightest stars are first-magnitude stars while those just visible to the human eyes are sixth-magnitude stars.
现在星等的取值范围已经多过六等，低于一等，甚至下降到负值——夜空中最亮的星是天狼星，它的可视星等为- 1.46。
The magnitude scale now runs to more than six and less than one, even descending into negative Numbers -the brightest star in the night sky is Sirius, with an apparent magnitude of -1.46.
现在星等的取值范围已经多过六等，低于一等，甚至下降到负值——夜空中最亮的星是天狼星，它的可视星等为- 1.46。
The magnitude scale now runs to more than six and less than one, even descending into negative Numbers - the brightest star in the night sky is Sirius, with an apparent magnitude of -1.46.
现在星等的取值范围已经多过六等，低于一等，甚至下降到负值——夜空中最亮的星是天狼星，它的可视星等为- 1.46。
The magnitude scale now runs to more than six and less than one, even descending into negative Numbers - the brightest star in the night sky is Sirius, with an apparent magnitude of -1.46.
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