星系

Alternatively, the spectral softening above 2 GeV could be due to gamma-ray absorption via photon-photon pair production on the soft X-ray photon field of the host active galactic nucleus, but such an interpretation would require the dissipation region to be located very close (l~100 gravitational radii) to the black hole, which would be inconsistent with the X-ray spectrum of the source.

另外的关于2 GeV以上能谱变软的可能解释是高能光子和寄主活动星系核的软X射线辐射场通过电子对产生反应而被吸收，但是这个解释要求反应区域要很靠近中心黑洞(1~100倍引力半径)，这和3C 454.3的X射线测量谱相矛盾。

Blazars are one of the most extreme classes of active galactic nucleus, with high luminosity, large amplitude and rapid variability, high and variable polarization, radio core-dominance, and apparent superluminal speeds.

在活动星系核中，Blazar天体是具有极端性质的一类，它以大幅快速光变、高且变化的偏振、射电核主导、视超光速运动、全波段非热辐射为主要特征。

Other planets in the system include Coccia, Brembo, Albata Ing, Farasu, Yamime, Tsutai and Imei.

星系内的其它行星包括科恰、布伦博、阿尔巴塔英、法拉苏、亚米梅、楚泰和伊梅。

Your entire Solar System is gradually being towed to a new location closer to Alcyone and also into a new Energy River at some point which will also further sustain this Solar System.

你们整个太阳系正在逐渐被拖拉到新的更接近昂宿六（昂宿六：昴宿星系以及我们的本地象限太阳系的中心太阳）的位置上。

In the sequel, the special effects features not only the planet's topography to create a Pandora, Pandora will also show the planet belongs to Alpha Centauri galaxy.

在续集中，特效的功能不仅仅是营造潘多拉星球的地貌，同时还将展示潘多拉星球所属的半人马座阿尔法星系。

Humanity came from three other star systems primarily; Sirius, Alpha Centauri and the Pleiades.

人类主要来自其它三个星系；天狼星、半人马座α星以及昴宿星。

Imagine the farthest star to the left – Alpheratz – as the third-base star.

想像三垒位置是左边最遥远的星星壁宿二，从一垒位置星连线到壁宿二指向的位置大概的就是仙女座星系。

I learned to find the Andromeda galaxy by "star-hopping" from the star Alpheratz in Great Square to the two stars marked here – first Mirach, then Mu Andromedae.

我曾学过用用"星星的跳跃"寻找仙女座星系，从广场的大明星壁宿到被标记的两个星——首先是奎宿九星，其次是穆仙女座。

Imagine the farthest star to the left – Alpheratz – as the third-base star. A line drawn from the first-base star through Alpheratz points in the general direction of the Andromeda galaxy.

把左边最远的那颗星星壁宿想象成三垒星，从一垒星画一条线穿过壁宿，便指出了仙女座星系的大概方向。

Along the bottom streamer, star-hop from Alpheratz to the star Mirach. Draw a line from Mirach through the upper streamer star, and go twice the distance. You've just located the Andromeda galaxy!

沿着下边一条飘带，从壁宿出发跃至奎宿九星，再从奎宿九星画一条线穿过正对上一条飘带的星星，再延长至其一倍的距离，这样，你就标出了仙女座星系的位置。

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。