Astronomers describe star brightness in terms of magnitude and luminosity.
天文学家用星等和光度来描述恒星的亮度。
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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.
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.