The distance to such an object can be worked out by comparing its apparent brightness with its known, absolute brightness.
经过比较表观亮度和已知的绝对亮度，即可得出该天体和我们的距离。
The distance to such an object can be worked out by comparing its apparent brightness with its known, absolute brightness.
经过比较表观亮度和已知的绝对亮度，即可得出该天体和我们的距离。
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