什么是球状星团（globular cluster）？银河系（Milky Way galaxy）约有150个

本文介绍了球状星团的定义及其在星系中的分布情况。同时指出，我们的银河系中存在超过150个此类天体。

A globular cluster is a spherical collection of stars orbiting in the halo of spiral galaxies. Our own Milky Way galaxy has over 150 globular clusters. The post What’s a globular cluster? The Milky Way has about 150 first appeared on EarthSky .