恒星

Sensitive to a wider spectrum of light than its predecessors, it reveals blue and red giants beside yellow, sunlike stars.

它对光线的敏感能力比之前的相机可扩展至更宽的光谱范围。除了可以捕捉到太阳一样的黄色恒星外，它还能拍摄到蓝色恒星和红色恒星。

Such determinations that can be made on the Sun only because of its proximity to Earth are extrapolated not only to sunlike stars but also to stars of all types, so our detailed studies at solar eclipses inform our understanding of trillions of stars throughout the Universe.

对太阳进行如此的测定由于其是离地球最近，可以推断这个结果不但可以引用于类似太阳的恒星，也可以适用于所有类型的恒星，所以我们详细的研究日蚀同时可以了解遍布全宇宙的几百万兆的恒星。

Explanation: A satellite galaxy of the Milky Way, the Small Magellanic Cloud is a wonder of the southern sky, a mere 210,000 light-years distant in the constellation Tucana.

在猎户座的恒星孕育场中，仍处于形成阶段，变星猎户座LL星产生的恒星风，比我们处在中年期的太阳所产生的恒星风能量更强。

Standard star formation theory predicts that a tiny protostar forms first and subsequently grows by accreting the surrounding gas to become a massive star.

标准的恒星形成理论指出，在恒星形成过程中，一个小的星坯会先形成，接着通过吸积其周围的气体而增长质量，直至形成一个大质量的恒星。

"We've always assumed that life was a planetary phenomenon. Only on planets would you have the liquids thought necessary for the chemistry of life," he said."So if you could have life in the hot gases of a star, or in the hot, interstellar gas that suffuses the space between the stars, well, not only would that be 'life as we don't know it' but it might be the most common type of life."

&我们总是认为生命是行星上存在的一种现象，因为只有在行星上才拥有生命化学变化所必须的液体，&肖斯塔克称，&因此，如果在恒星的高温气体中，或者在恒星与恒星之间充满太空的星际热气中存在生命，这种'生命'将是我们所不了解的，同时却又是最普遍存在的一种生命。&

That is: According to the guide star flag, the number of stars identified and the cost-function of two attitude determination algorithm to carry on the final attitude determination, the better attitude are chose as the output.Through Monte-carol simulation, the error of four cases of attitude determination algorithms is studied.

对于实拍星图，基于导航星选取过程中赋予的恒星标识及星图识别结果给出了姿态确定算法的选取原则，即：根据导航星的恒星标识、识别出的恒星数目及不同定姿算法计算出的最小代价函数值的优劣进行最终姿态计算结果的选择输出。

The Additional Guide Star (with star flag 5) is come into use for improving the accuracy and speed of star identification. After the cases analysis of unsuccessful star identification, giving the guide star which always cause false star identification a given star flag(such as 6), which denote that the star is a Redundant Guide Star and can't take part in the star identification processing. Through the introduction of Redundant Guide Star, the accuracy of star identification is improving. The distribution of Additional Guide Stars spread all over the whole sky, even the star sparse area.

在选取导航星的过程中，位置精度阈值的引入，使得高精度的恒星作为导航星，为高精度的卫星姿态反演奠定了基础；辅助导航星的引入，与单一使用Tycho-2星表相比引入了大量的亮星(189颗辅助导航星遍及全天球，其中亮于3等星的恒星占34.4%)，且弥补了部分天区恒星稀疏无法满足星图识别条件的不足，这将十分有利于提高星图识别速度和识别率；冗余导航星的剔除，为进一步提高星图识别率提供了可能。

These dust and gas clouds lie near the edge of a large molecular cloud. Themselves telltale signs of star-forming regions, they tend to hide the newly formed stars and young stellar objects or protostars from prying optical telescopes.

这些尘埃与氢气云都位在一个大分子云的边缘，而它们本身也是恒星诞生区的标志，不过对光学望远镜观测来说，它们也是遮掩新生恒星和原恒星的障碍。

Their simulation of the birth of a protostar in the early universe signifies a key step toward the ambitious goal of piecing together the formation of an entire primordial star and of predicting the mass and properties of these first stars of the universe.

他们对早期宇宙中原恒星诞生的模拟是一个重要进展，该研究的最终目标是对一个完整的原恒星的形成做全面描述，并且预测宇宙中第一批恒星的质量和属性。

The result is a detailed description of the formation of a protostar -- the early stage of a massive primordial star of our universe -- and the researchers' computer simulation, which has been called a "cosmic Rosetta Stone," sets the bar for further investigation into the star formation process.

这篇文章详细描述了原恒星的形成过程——它们是宇宙中大质量原始恒星的早期状态，他们称之为&宇宙罗塞塔石碑&的计算机模拟程序目的是要对恒星的形成过程做深入研究。

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