quasar

But scientists have now found a quasar that's apparently churning out new stars in the absence of a host galaxy.

但是现在科学家们发现，一颗没有挂靠主星系的类星体显然在大量地制造出新恒星。

This quasar lit up the nearby gas, and although the quasar has since gone out, the light from it is still travelling to the object.

该类星体点亮了附近的气体，虽然该类星体已经耗尽，但光仍在该物体中旅行。

To test for problems of this kind, we substituted calibration data for the quasar data and analyzed them, pretending they were quasar data.

为了测试这类问题，我们使用校准过的数据取代类星体资讯，并把它们当做类星体的数据来分析。

A growing black hole, called a quasar, can be seen at the center of a faraway galaxy in this artist's concept.

这是一颗正在成长的黑洞，称之为类星体，它位于一个遥远星系的中心。

In short, quasar activity, like star formation, was more vigorous in the distant past, a third sign that we live in relatively boring times.

简单地说，类星体的活动就像恒星的形成一样，在遥远的过去比今天更为猛烈，这是第三个指标，显示出我们生活在一个相对较为乏味的年代。

Bursts of intense star formation seem to last about 10 million to 20 million years around a typical quasar.

在一个典型的类星体周围，剧烈活动的恒星构造的爆发看起来会持续大约一两千万年。

The mirror, in this case, is a vast blob of gas about 70, 000 light-years away from the center of a spiral galaxy, where the quasar resides.

从这种情况看，这个大家伙实质上是来自70000光年之外的星系螺旋线（宇宙射线）的视像，也即是类星体所在之处。

The first one we looked for was a distortion of the wavelength scale against which the quasar spectral lines were measured.

我们第一个检查的是，测量类星体谱线时波长尺标的扭曲。

Within a few million years, both quasar and galaxy will have merged.

在几百万年的时间里，类星体和伴星系将会合并在一起。

As light from a quasar travels through space, it passes through clouds of gas that imprint absorption lines onto its spectrum.

当光从一个类星体划过太空，便会穿过将吸收线特征印在光谱上的气体云。

That gas absorbs the quasar light at particular frequencies, imprinting a bar code of narrow lines onto the quasar spectrum [see box above].

这些气体吸收了特定频率的光后，便会在类星体的光谱上刻划出许多狭窄暗线的条码（参见下页〈星光捎来的讯息〉）。

With only its hot whirling quasar within its reach, the black hole would swallow that up and then stop feeding.

当只有这些炙热的旋转着的类星体在他的它的势力范围内时，黑洞将吞噬掉这些然后停止活动。

In this image, the two star like objects are the split images of the quasar.

在这张图像上，两位明星状物体是分裂图象的类星体。

A 2003 mine-clearing operation in the port of Um Quasar, Iraq, was a major test for autonomous underwater vehicles.

2003年排雷行动，在港口这个类星体，伊拉克，是一大考验，水下航行器。

The quasar is the orange object at the center of the large, irregular-shaped galaxy.

图中这颗橙色的类星体位于一个巨大、且不规则形状的星系中心。

They compared the spacing between these lines in quasar spectra with laboratory measurements.

他们比较类星体光谱与实验室的测量结果中，吸收线间的距离。

The one physical system, the brain, contains an accurate working model of the other -- the quasar.

一个物理系统，大脑，包含了另外一个物理系统的准确工作模型--类星体。

It almost surely once had a quasar phase, astronomers say.

天文学家已经几乎确认，它曾经存在一个类星体的阶段。

Petitjean and Scannapieco are working together on the clustering of heavy elements observed in quasar spectra.

佩提特金与史坎纳皮科正合作探讨类星体光谱中观测到的重元素群集现象。

That may explain why some quasars are surrounded by galaxies: the galaxy didn't form the quasar; rather the quasar pulled in the galaxy.

这也许可以解释为什么有些类星体会被星系包围着：星系并没有形成类星体，相反，是类星体把星系吸引过来的。