Based on its radiation intensity, the team conservatively estimates its mass at 500 times that of the sun, says Farrell, now at the University of Leicester in the United Kingdom.

法雷尔说：根据其辐射强度，研究小组保守地估计，该黑洞的质量是太阳质量的500倍。法雷尔现在供职于英国的莱斯特大学。

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C. and A.D. 500 by brushing away the dark top layer of barren desert to reveal the light, sandy soil underneath, wrote Clive Ruggles, an archaeologist from the University of Leicester in the United Kingdom, in an email.

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