摘要
宇宙的结构有点像俄罗斯套娃——每个都嵌入到另一个稍大一点的里面。以我们所在的局部宇宙为例，地球是太阳系的一部分，太阳系又转而成为银河系的一部分，而银河系又是被称为本星系群的星系结构中的一个。
The structure of the universe is like a Russian matryoshka doll -- each bit is nested inside a larger one. In our case, for example, Earth is a member of the solar system, which in turn is a member of the Milky Way galaxy, which is a member of a family of galaxies known as the Local Group.
出处
《天文爱好者》
2017年第3期44-46,共3页
Amateur Astronomer
