星系

An unexpected transient X-ray burst, lasting 3 minutes 40 seconds, was detected in one of the galaxy's spiral arms.

这次观测在该星系其中一个螺旋臂中探测到一个意外的瞬时X-射线暴，持续时间为3分40秒。

Foucault's pendulum, and other much more sensitive experiments, demonstrate that an inertial frame is also one in which the distant galaxies do not appear to rotate.

一节，我们介绍了惯性系的概念：找一个参考系使牛顿定律适用于傅科摆和其他更敏感的实验，而我们发现在这个惯性系中遥远星系是不转动的。

To explain why the frame of the distant galaxies is an inertial frame, we really need either Mach's principle or another postulate.

为了解释遥远星系参考系是惯性系，我们要么需要马赫原理，要么需要其他什么假定。

Due to the X-ray observation of Abell 2199, detailed studies have been made by many astronomers in small structure of cluster core and large structure of infall region.

基于SDSS 和NED（NASA/IPAC Extragalactic Database）对A2199这一天区的最新星系观测数据，我们研究了该星系团的形态、结构和动力学。

So what would happen when your ship reaches intergalactic space?

当你的船进入到星系间空间会发生什么？

The surprise is that we are seeing dust hundreds of thousands of light years outside of the galaxies – in intergalactic space.

意外的是我们在距离星系数十万光年的星系际空间观察到了尘埃。

Or that we have somehow jumped to a void in intergalactic space, perhaps jumped beyond the expansion wave of the big bang itself.

或者也许我们跳跃到了星系之间的某个真空，也许跳出了膨胀波以外。

The top image, a wide field X-ray view, reveals spectacular loops of hot gas spreading out from the southern part of The Antenna into intergalactic space.

上图是宽视场 X 射线照片，其中显现的是壮观的热气体环，从触角星系的南侧向外延伸至星系际空间。

But as Fermi project scientist Steve Ritz (NASA/Goddard Space Flight Center) notes, GRBs give us a chance to conduct the experiment in space by letting gamma rays run a very long race across the vast distances of intergalactic space.

不过根据费米望远镜项目科学家史蒂夫·里茨（美国航空航天局/戈达德宇宙飞行中心）的说法，伽马射线爆发提供了一个在太空进行实验的机会，因为伽马射线需要穿过广阔的星系空间，这是一段非常遥远的距离。

The team used FLAMES, the super-efficient spectrograph at ESO's Very Large Telescope at the Paranal Observatory in Chile, to make ultra-precise measurements of a host of planetary nebulae in the outskirts of Messier 87 and in the intergalactic space within the Virgo Cluster of galaxies, to which Messier 87 belongs.

研究团队使用FLAMES——VLT阵列中的超高效摄谱仪，极为精确的测量了M87外缘和室女座星系团星系间空间中的行星状星云。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。