galaxies

Quasars are the highly energetic cores of distant galaxies.

类星体是遥远星系的极为活跃的核心体.

Galactic surveys show that distant galaxies are not as evenly distributed in space as theory predicts.

对银河系的研究表明，遥远星系在太空中的分布并不像理论所预言的那样均匀。

Spiral galaxies are considered to be gravitationally bound configurations of stars.

旋涡星系被认为是由恒星组成的引力束缚系统.

The universe seems to be rapidly expanding its component galaxies moving ever farther apart.

宇宙似乎在膨胀,它的组成部分――星系互相离得越来越远.

Cosmologists are debating the possibility that turbulence causes galaxies to form.

宇宙学家正在争论湍流导致星系诞生的可能性.

They turned their telescopes towards other nearby galaxies.

他们把望远镜转向附近其他星系。

To explain this, they hypothesise that galaxies must contain a great deal of missing matter which cannot be detected.

为了解释这一点，他们假定各星系一定包含了大量无法探测到的不明物质。

As the universe expands, these galaxies stay the same size.

当宇宙扩张之时, 星系的大小保持不变.

Most galaxies occur in pairs or in small multiple groups.

大多数星系成双或几个成一小群.

The universe as a whole contains billions of comparable galaxies.

整个宇宙,包含亿万个可以比拟的银河系.

We still don't know how many galaxies there are in the universe.

我们还不知道宇宙中有多少个星系.

They reported that younger galaxies should be significantly bluer.

据他们报道,较年轻的星系颜色应该显著地偏兰.

There is a curious feature in the spectra of spiral galaxies.

在旋涡星系的光谱中有一种奇妙的特征.

Other galaxies are placed irregularly in space.

其它星系不规则地位于太空中.

This law is known to hold true for galaxies at a distance of at least several billion light years.

据知，这条定律同样适用于距离至少几十亿光年之远的星系。