評論
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You are talking about the shape of the cluster though, not the shape of the galaxies within the cluster.
所以你講的是星團的形狀，不是星團里星系的形狀。
Right. For example, let’s consider the Coma Cluster.
沒錯。比如我們來想想后發星系團。
It’s a symmetrical cluster basically spherical in shape, but the individual galaxies within it are elliptical
它是一個對稱的星團，形狀基本上是個球形，但是它里面的單獨星系是橢圓的，
they’re not spherical or spiral shaped.
它們不是球形或螺旋形的。
But the cluster itself shows spherical symmetry. Um, the Virgo Cluster, on the other hand, is considered irregular.
但是星團本身展現出了球形對稱。而處女座星系團則被認為是非常規的。
There’s no symmetry to its overall shape, no central concentration of galaxies,
它的整體形狀不對稱，而且中心也沒有星系聚集，
but it happens to have both elliptical and spiral galaxies within it.
但它碰巧既有橢圓的星系也有螺旋狀星系。
Another question. You were saying how some clusters have more galaxies than others.
還有一個問題。你一直在說一些星團擁有比其他星團更多的星系。
How many galaxies does a cluster have to have in order to even be a cluster?
要成為一個星團的話，它需要有多少星系？
