Surrounding the Milky Way are thousands of spherical globular star clusters containing some of the oldest stars in the Universe.
上千球状星团围绕着银河，其中包含一些宇宙中最老的星星。
They simply don't have enough gravity to hold them together, unlike their much more massive Cousins, the globular star clusters.
仅仅是因为它们没有足够的引力，以致它们不能像比它们大得多的兄弟——球状星团一样聚在一起。
Of course, M13 is now modestly recognized as the Great Globular Cluster in Hercules, one of the brightest globular star clusters in the northern sky.
当然，M13恰当地被称为武仙座球状星团，北天最明亮的球状星团之一。
whether it hosts a good variety of different types of star, which excludes globular clusters which contain only similar stars;
是不是有丰富种类的恒星，球状星团这样只包含类型体的要被排除；
These are globular clusters - groups of a million or so stars crammed into a volume that elsewhere would accommodate barely a single star.
这些球状星团是由上百万颗星体聚集在一处，而同样大小的空间，在其他地方却只能容纳一颗恒星。
No single star formation mode with a constant star formation rate (ser) and an invariable initial mass function (IMF) can fit the observations of globular clusters.
没有一个单一的恒星形成恒定的恒星形成率(SER)和一个不变的初始质量函数(IMF)的模式适合球状星团的意见。
No single star formation mode with a constant star formation rate (ser) and an invariable initial mass function (IMF) can fit the observations of globular clusters.
没有一个单一的恒星形成恒定的恒星形成率(SER)和一个不变的初始质量函数(IMF)的模式适合球状星团的意见。
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