星系

Some mergers (including NGC 2623) can result in an active galactic nucleus,where one of the supermassive black holes found at the centres of the two original galaxies is stirred into action.

包括NGC 2623在内的某些碰撞碰撞星系会形成活动星系核，形成这个过程一般会在两个原始星系的中心发现超级黑洞。

The irregular galaxy NGC 1427A is a spectacular example of the resulting stellar rumble. Under the gravitational grasp of a large gang of galaxies, called the Fornax cluster, the small bluish galaxy is plunging headlong into the group at 600 kilometers per second or nearly 400 miles per second.

星系NGC 1427A就是这样的一个例子，在一个名为Fornax星群的一大群星系的引力场的作用下，这个小蓝星系正以600公里/秒（400英里/秒）的速度冲向星系群。

A barred spiral galaxy located some 30 million light years away toward the constellation Horologium, Galaxy NGC 1512 is bright enough to be seen with amateur telescopes.

NGC 1512 星系是一个位于时钟座星系里的棒旋星系，距离地球大约3000万光年。星系 NGC1512非常明亮，人们利用普通望远镜就能看到它。

The results show that the mass density of disc galaxies increases an order of magnitude from the early-type disc galaxies to the later one, oblateness decreases to minimum at Sd,m, and then increases Having excepted SO and IrII, these parameters vary with the type of disc galaxies monotonicly.

早先得出早型盘星系的质量密度要比晚型高一个量级Ⅲ。这是因为所用的质量值是光度质量，早年得到的早型星系的质光比大于晚型星系一个量级。然而后来的工作发现盘星系的质光比大约为同一值嘲。后来有

The Sombrero lies at the southern edge of the rich Virgo cluster of galaxies and is one of the most massive objects in that group, equivalent to 800 billion suns.

草帽星系位于巨大的室女座星系群的南部边缘，是星系群里质量最大的星系之一，其质量相当于8000亿颗太阳。

Other, somewhat more astronomically savvy people might name the Magellanic Clouds as the closest galaxies. The Large and Small Magellanic Clouds are two small, blobby galaxies that actually orbit the Milky Way, and are about 180,000 and 210,000 light-years away, respectively.

另一些，在天文上了解更多点的人可能会将麦哲伦星系定为最近的星系，大，小麦哲伦星系是两个小的双星星系，让人惊讶的是，他们实际上在距银河18万到21万光年处围绕绕银河运行着。

An amazing phote was newly shot by Harbour Telescope: Two giant galaxies displayed a magnificent space waltz, with the "hand" of one galaxy gently holding the body of the other, spiring slowly with graceful steps under mutual magnetism.

中国日报网环球在线消息，哈勃太空望远镜拍下一张令人惊叹的新照片：两个巨大的星系上演了一场壮观的&太空华尔兹&。一个星系的&手臂&轻轻地抱着另一个星系的&身体&，这对星系在相互引力的牵引下以优美的舞步缓慢旋转。

At least seven galaxies in the chain appear to move coherently, although others appear to be superposed by chance.

在这条星系链上，至少有7个星系看上去连贯一致的运动，虽然其它的星系看上去也碰巧在这个星系链上。

The formation and evolution of disks are important for the formation and evolution of spiral galaxies, for disks are important components of the galaxies and the most baryons are in disks.

中文摘要：在旋涡星系形成和演化的过程中，星系盘的形成和演化是关键，因为盘是星系的主要成份，大部分的重子物质都包含在星系的盘中。

The shape of star formation rate density versus the redshift in the closed box is quite similar to the Madau plot drawn from the UV luminosity in the observation of high redshift.

我们在星系化学演化的研究中发现：变化的IMF形式对星系化学演化结果有明显的影响；星系化学演化总趋势是随时间演化气体含量逐渐减少，金属含量逐渐增加；在我们所取的简单星系模型内部恒星生成率密度随红移的演化关系能够在一定程度上体现高红移观测中所得到的Madau图的特性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。