Open, or galactic clusters, and globular clusters.

开放星团或疏散星团，以及球状星团。

Together these descriptions almost perfectly reproduce the evolution of the kinds of large-scale structures that astronomers observe in the universe today—galaxies, galactic clusters and gargantuan galactic superclusters.

这些描述几乎完美地再现了当今天文学家在宇宙中观察到的各种大型结构的演变——星系、星系团和庞大的星系超星系团。