类星体

Very distant quasars give us information about earlier times in the history of the universe.

遥远的类星体给我们提供宇宙演化史初期的信息。

"We can also try to determine whether the same physical laws applied in the distant past because we see quasars as they were long ago," he said.

&同时我们可以确认相同的物理定律是否适用于远古时期，因为我们所看见的是很久以前的类星体，&他说。

What are quasars and active galactic nuclei?

什么是类星体和活跃星系核？

Taken together, the data paint a picture of how quasars form.

两者合计，数据描绘一幅图片类星体是如何形成。

Discovered in 2005 and located about 5 billion light-years away, its as massive and energetic as other quasars.

HE0450-2958发现于2005年，位于大约50亿光年之外，它的质量和能量都跟其他类星体相当。

Radio galaxies and quasars, Seyfert galaxies are similar, but there are differences.

射电星系与类星体、塞佛特星系有相似之处，但又有区别。

Using this device the spectra of some quasars of about 19m with large redshifts have been observed.

我们已用该装置观测到19m左右的具有大红移的类星体光谱。

The discovery of quasars refuted the Steady State theory.

类星体的发现否定了稳恒态理论。

For many years, Treister says, astronomers doubted that obscured quasars were very common.

多年来，Treister说，天文学家怀疑，模糊了类星体，也很普遍。

Some quasars emit 1,000 times as much energy as the entire Milky Way, yet look like stars in photographs.

有些类星体所发出的能量是整个银河系的1000倍，但是从照片上看就和恒星一样。

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。