"Anything that takes that long to rise and is that bright has to have a lot of mass, " said study co-author Peter Nugent, an astrophysicist at the Lawrence Berkley National Laboratory in California.

“任何需要相当长的上升，是光明需要有大量的群众说：”研究的共同作者彼得纽金特，一在劳伦斯伯克利国家实验室的天体物理学家在加利福尼亚州。

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