每一种样式代表一种不同的化学元素，所以光谱线的不同集合或模式意味着这颗恒星有不同的化学成分。
Each pattern stands for a distinct chemical element, and so different sets or patterns of spectral lines mean that the star has a different chemical composition.
天文学家不知道同样的生命产生进程会不会在那些比我们太阳更冷的恒星周围发生，但斯皮策观测站发现他们的尘埃盘的化学特性是不同的。
Astronomers don't know if these samelife-generating processes are taking place around stars that are coolerthan our sun, but the Spitzer observations show their disk chemistry isdifferent.
在这一刹那，恒星发出的光会穿透行星的大气，天文学家得以研究产生的波长，并推断行星大气的化学成分。
In those brief moments, the light from the star would flow through the planet's atmosphere, allowing astronomers to study the wavelengths produced and infer the atmosphere's chemical composition.
他继续补充道，找到一个和太阳有相同年龄的恒星根本没有可能，而且很多和太阳没有关系的恒星也有着与其相同的化学构成。
Ascertaining that a star has exactly the sun's age is impossible, he says, and many unrelated stars share its chemical composition.
因此，如果你要找到另一颗在黄色恒星附近的浅蓝色的点。这种蓝色和行星的化学分析将会给我们生命的强烈暗示。
So if you found another star with a pale-blue dot tooling around that yellow star, that blue color and chemical analysis of the planet might give us a strong suggestion of life.
天文学家不知道同样的生命产生进程会不会在那些比我们太阳更冷的恒星周围发生，但斯皮策观测站发现他们的尘埃盘的化学特性是不同的。
Astronomers don't know if these same life-generating processes are taking place around stars that are cooler than our sun, but the Spitzer observations show their disk chemistry is different.
在我们这个宇宙里出现了漫长生命周期的恒星，具有稳定轨道的行星，能够实现复杂化学变化的分子，仿佛它的物理法则曾被精确校准过。
In our universe the laws of physics seem precisely calibrated to allow the existence of long-lived stars, planets with stable orbits, and molecules that allow complex chemistry.
研究这些恒星的化学组成有助于科学家了解组成我们地球和其他行星的物质，很久以前是怎样离开恒星的诞生地(到达我们太阳原始星云)的。
Studying the chemistry of the stars helps scientists learn how the matter that makes up our earth and other planets in our galaxy left its stellar birth places long ago.
尘埃的化学成分受恒星大气呈现的状态与成分支配。
The conditions and elements present in the stellar atmosphere will dictate the chemical composition of the dust.
我们能够搜寻其它恒星，寻找象火星这样离我们很近的行星上的简单生命形式，并且在实验室中可以对生命起源的化学机理作更广泛的研究。
We can search for planets of other stars, seek simple forms of life on such nearby planets as Mars, and perform more extensive laboratory studies on the chemistry of the origin of life.
贫金属星的中子俘获元素丰度与恒星的形成和演化密切相关，它为研究星系形成早期的历史背景和化学演化提供了重要信息。
The abundances of neutron-capture elements in metal-poor stars, tightly related to the star formation and evolution, provide important clues to the chemical evolution of the Galaxy.
他说，确定一颗恒星恰好跟太阳的年龄相同是不可能的，而很多本不相关的恒星跟太阳的化学成分又是相同的。
Ascertaining that a star has exactly the sun's age is impossible he says and many unrelated stars share its chemical composition.
令人惊讶的是，能有这么多的进展，仅仅靠研究恒星的化学组成。
It's amazing that you can go so far simply studying the chemical composition of stars.
天文学家们对小麦哲伦星云中恒星的形成一直和热衷，因为，小麦哲伦星云的化学组成和银河系的不同。
Astronomers are especially keen to study star formation in the Small Magellanic Cloud, because its chemical composition is different from that of the Milky Way.
天文学家借助哈勃太空望远镜的光学过滤器，可以准确查明该星云的化学组成、温度和密度，并追踪恒星的死亡过程。
Optical filters in the space telescope allowed astronomers to precisely determine the nebula's chemical makeup, temperature, and density, and to trace the stages of the star's demise.
恒星元素丰度是探讨银河系化学演化的重要探针，分析不同星族成分的元素丰度是研究银河系结构和化学演化的重要课题。
Analysis about the abundance in different stellar populations is a very important subject in study of the structure and chemical evolution of the Galaxy.
因此我们就能够通过比较光谱线的模式和光谱库中已有的元素的模式，判断出另外一颗恒星的化学成分了。
So we can figure out the chemical make up of another star by comparing the spectral pattern it has to the pattern of the elements seen in the library.
我的同事比较化学元素组成，在不同星系恒星中，确实发现了银河系中有外来恒星。
My colleagues, comparing composition of chemical elements in different galactic stars actually discovered alien stars in our galaxy.
在第一部分引言中，说明现代恒星演化学说的分歧主要是在恒星形成主序星以后的演化。
In the first introductory part it is pointed out that the main difference among current theories of stellar evolution is in the evolutionary stage after stars move onto the main sequence.
在第一部分引言中，说明现代恒星演化学说的分歧主要是在恒星形成主序星以后的演化。
In the first introductory part it is pointed out that the main difference among current theories of stellar evolution is in the evolutionary stage after stars move onto the main sequence.
应用推荐