评论
打印
Listen to part of a lecture in an astronomy class.
请听天文学课上的部分内容。
Before we continue talking about the properties of individual galaxies, it’s worth talking about the distribution of galaxies in space.
在我们继续讲每个星系的属性之前，这些星系在太空中的分布也值得一讲。
Efforts at mapping or surveying the universe, making a sort of atlas of galaxies, have been going on for more than 50 years.
绘制宇宙的地图或勘测宇宙、制作出星系的地图集的努力已经进行了超过50年了。
And the creators of the first major map of the universe were the astronomers Harlow Shapley and Adelaide Ames.
第一批重要的宇宙地图绘制者是天文学家Harlow Shapley和Adelaide Ames。
In 1932, Shapley and Ames catalogued the positions of 1250 galaxies by photographing what they saw through their telescopes.
1932年，Shapley和Ames通过拍摄下他们在望远镜中看到的内容编录了1250个星系的位置。
And they made an important discovery. Their survey was the first to indicate that galaxies were not distributed uniformly in space.
而且他们做出了一项重大发现。他们的调查首次指出星系在太空中不是均衡分布的。
Some areas had a lot of galaxies, and other areas had just a few. Another way to putting this is say that galaxies are clustered.
一些区域有很多星系，而其他区域只有一点儿。另一种表达方式就是说星系是成群分布的。
They’re not spread evenly throughout the universe. So we have stars grouped together in galaxies and galaxies grouped together in clusters. Okay?
它们在宇宙中不是均匀分布的。所以我们有聚集在星系中的星星和聚集成星团的星系。
Now, after their survey, other astronomers completed surveys that added to the number of clusters catalogued.
继他们的调查之后，其他天文学家完成了一些调查，增加了编录的星团数量。
