Globular clusters once ruled the Milky Way.

球状星团曾经统治着银河系。

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Globular clusters have some of the oldest stars in the universe.

球状星团中有很多宇宙中最古老的恒星。

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Different plants depict stars, globular clusters, and even nebulas.

不同的植物描绘出恒星、球状星团，甚至还有星云。

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Using their least conservative assumptions, the researchers found that less than 2% of the globular clusters should contain intermediate mass black holes today.

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"We were preparing for a long, systematic search of thousands of globular clusters with the hope of finding just one black hole, " said Dr Maccarone.

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Led by George Daley of Children's Hospital in Boston, the researchers began their process by culturing mouse embryonic stem cells to form globular clusters called embryoid bodies.

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