恒星

恒星本身发光发热。

A fixed star can emit light and heat by itself .

一种求恒星视位置的新算法

A new algorithm of calculating the apparent place of fixed star

地球离最近的恒星大约为4光年。

The nearest star to earth is about 4 light years away .

这颗行星可能正环绕着一颗小恒星运行。

The planet is probably in orbit around a small star .

这些恒星一定是形成于100到150亿年前。

The stars must have formed 10 to 15 billion years ago

卫星通过对每颗恒星反复观察进行定位。

The satellite fixes positions by making repeated observations of each star .

这颗恒星的表面温度估计在零下75摄氏度左右。

The star 's surface temperature is reckoned to be minus 75 degrees Celsius

托勒密绘制了48个星座1,000多颗恒星的星位图。

Ptolemy charted more than 1000 stars in 48 constella-tions

这颗人造卫星将用来研究恒星的能量辐射。

The satellite will study energy radiation from stars .

从那颗恒星上不断吹出恒星风。

A stellar wind streams outward from the star .

银河系由1,000亿颗恒星组成。

The Galaxy consists of 100 billion stars .

天文学家们必须要从这些恒星上采集更多的光谱来证实他们的推想。

Astronomers will have to collect more spectra from these stars to confirm their suspicions .

科学家什么时候能征服恒星呢？

When will scientists conquer the stars ?

值得强调指出，在恒星大气中，流体静力平衡是非常精确地成立的。

A point worth emphasizing is that hydrostatic equilibrium is fulfilled with great accuracy in stellar atmosphere .

恒星所达到的温度取决于它的质量。

The temperature a star attains is determined by its mass .

这个观测卫星将继续跟进以往的探索工作，尽全力发掘关于遥远世界的新见解。人们已发现约4500颗环绕其它恒星运行的行星。

Some 4500 planets have been discovered orbiting other stars .

这颗恒星失去了大部分大气层，留下了一个炽热的核。

The star loses most of its atmosphere , leaving a very hot core .

每一星系都有无数的恒星

Each galaxy contains myriads of stars .

恒星是强大的发光体

Stars are radiators of vast power .

计算机模型显示，这颗星可能由两颗类似的恒星合并而成。

Computer modelling indicates it could have been created by the merger5 of two such stars .

多数恒星也许还拥有若干行星、流星、彗星和小行星。

Most stars probably have their quota of planets , meteorids , comets , and asteroids .

它是像太阳这样的恒星在它们生命的尽头，耗尽所有核燃料后演化成的星体。

It 's what stars like the Sun become at the end of their lives when they 've used up all their nuclear fuel .

恒星形成区H2O对脉泽的观测与研究

Observational study of h_2o maser in the star formation region

银河系恒星形成区的OH、H2O脉泽

The OH and H2O Masers in the Star Forming Regions of the Galaxy

Li丰度-恒星自转关联很可能只是Li丰度-恒星活动性关联的一种反映。

The Li abundance-rotation relation may be a reflection of Li abundance-stellar activity correlation .

应用广义Kalman方法观测振动模态恒星黑子的观测

Mode Observation of Vibratory Signal via Generalized Kalman Filter Observational Approaches to Starspots

GPS同步恒星钟

GPS Synchronizing Sidereal Clock

它曾被当做行星命名为堤喀或者简单的X行星。或者曾被当作一颗恒星命名为涅墨西斯星。

As a planet , it 's been called Tyche or simply Planet X. As a star , Nemesis .

介绍了白天天空背景下，在大气层内用CCD探测恒星可探测极限星等值的计算方法。

The method to estimate the detectable stellar magnitude limit in daytime sky background is introduced .

按MERIT规范用直角坐标试算恒星视位置

Apparent places of stars reduced by the method of rectangular coordinates suggested in merit standards