恒星

This paper can infer time of GPS satellite clock that there is a periodic variation of 12 sidereal hour, and GPS satellite orbit period is just 12 sidereal hour, no doubt, it be designed for to check up time.

本理论可以推导出GPS卫星钟的快慢，有12恒星时的周期变化，而GPS卫星轨道周期正好为12恒星时，极可能是为了方便校对时间而设计的。

For example, since the earth to the base, relative to the sun to measure time to get the sun when the time is measured relative to the stars, known as the sidereal time, to atomic transition frequency as a benchmark time for the system is called atomic time.

例如，以地球自转为基准，相对于太阳来计量时间得到的是太阳时，相对于恒星来计量时间，称为恒星时，以原子的跃迁频率为基准的时间系统称为原子时。

To put this on a more solid statistical foundation these two samples in the Teff = 5600–5900 K window were extended by adding 16 and 13 planet-host and comparison sample stars respectively, for which we have obtained new Li abundances from high quality spectroscopic observations using the same spectral synthesis tools.

在此温度范围中，通过利用同样的光谱合成手段，我们得到一批新的样本，它们的锂丰度同样由高质量光谱分析仪得出。这样，我们为这两组样本分别各增加16颗"有行星"恒星和13颗"无行星"恒星，使得统计结果更具有可靠性。

Over break 3. But even assuming that a planet is the right size and has the proper chemical composition and a stable orbit neither too far from its star nor too close, so that its temperature is at all times in the range of liquid water (as is true of Earth except for the polar regions), a great deal would stilldepend on the kind of star it was revolving about.

over break 但是即使假定有一颗行星，它的大小正好，化学成分适宜，运行轨道稳定，与恒星的距离既不太远也不太近，气温始终保持在液态水温的范围内（正如地球上极地以外地区的温度一样），那儿是否存在生命，在很大程度上仍得取决于它所围绕运转的是什么样的恒星。

In the antennae galaxies, nearly 50% of the dark object is a young star cluster, each containing tens of thousands of stars.

在触角星系中，近50%的昏暗物体是年轻的恒星群，各自包含数以万计的恒星。

The cloud of interstellar dust looming above the Galactic plane is a large region of star formation around the star known as Rho Ophiuchi.

云的星际尘埃笼罩以上的银河系平面，是一个大区域的恒星形成围绕恒星称为rho ophiuchi 。

Although it is not currently accompanied by a starburst, bright clusters of stars do reside nearby.

虽然现在并没有伴随著恒星暴增的现象，可是确有闪亮的恒星群出现在附近。

The star is shedding its outer envelope in a strong stellar wind, ejecting the equivalent of the Sun's mass every 10,000 years.

这颗恒星正吹出强烈的恒星风将其外壳吹走，每1万年喷射出的质量相当于一个太阳的质量。

This nebula is a bubble, and it's bubble because intense blasts of stellar wind and radiation for a nearby star have cut through the dust and hollowed out the middle.

N44F星云呈气泡状，之所以呈现这种奇特的形状，是因为剧烈的恒星风和附近恒星的辐射从尘埃中穿过，在中央位置留下了中空地带。N44F星云位于大麦哲伦星云内。

An understanding of the stellar energy sources is still more vital for the problem of stellar evolution.

弄清恒星的能源对恒星演化的研究是更为关键的问题。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了