行星

HD 189733b is one of more than 270 planets to be discovered orbiting stars other than our sun, called extrasolar planets.

HD 189733b 是业已发现的270多颗围绕着太阳系以外恒星旋转的行星之一，被称为系外行星。

Astronomers used Hubble to make the first visible-light snapshot of an extrasolar planet and to explore an exoplanet's atmosphere.

天文学家使用哈勃第一次获得了系外行星的可见光图像并且探索了该行星的大气。

CASA concerns with origin, distribution and evolution of life in the Universe, such as search for extrasolar planets, origin, structure, and evolution of planetary systems, search for life under extreme conditions, and effects of ionizing radiation on organic and inorganic molecules so on.

该中心主要关注宇宙生命的起源，分布和演化的研究，比如搜索太阳以外行星，行星系统的起源、结构和演化，探索极地条件下的生命，以及离子辐射对有机和无机分子的影响等。

With a comprehensive analysis of the astronomical work Huan Yu Shu Yao witten byr Ma Dexin (1794-1874), a Qing minority nationality scholar who had shdied adroad, this Paper holds that the work has some distinguishing features in the research of the Hui calendar, introduction of Galileo's heliocentric theory, and observation of stars and planets. It also makes imortant achievements in drawing charts of the heliographic distributon of sunspots, the surface of the moon and the surfaces of the five big p...

该文全面剖析了我国近代最早出洋的科学家马德新的天文学著作《寰宇述要》，指出这部著作在对回回历法的研究、哥白尼学说的介绍、恒星行星观测以及太阳黑子分布图、月面图、五大行星表面图的绘制等方面均具有特色，在我国天文学史上占有一定的地位，是一部有广泛影响的我国少数民族科学家的天文学专著。

Co-author Coel Hellier, from Keele University in Staffordshire, UK, said planets with retrograde orbits were thought to be rare.

它是第十七颗由英国大学的广域搜索行星协会发现的外行星。

"If you look at how the spectrum of the star changes when the planet transits across it, you can work out which way the planet is travelling," Professor Hellier added.

英国科学家利用一系列观测恒星的照相机进行观察恒星发出的光线粒子时，这颗行星在他们面前掠过，这才发现了这颗行星。

This planet is only as dense as expanded polystyrene, 70 times less dense than the planet we're standing on, said professor Coel Hellier of Keele University.

来自Keele大学 Coel Hellier教授说：&这颗行星仅仅和聚苯乙烯的密度一样大，比我们所站立的这颗行星密度低70倍&

Jerrodd felt uplifted, as he always did when he thought that his own personal Microvac was many times more complicated than the ancient and primitive Multivac that had first tamed the Sun, and almost as complicated as Earth's Planetarv AC that had first solved the problem of hyperspatial travel and had made trips to the stars possible.

谢路感到很是兴奋。他每次想到这问题都有同一的感觉∶他现时个人拥有的「微型模」，比起那首次驯服太阳，既古老又原始的「茂的模」，不知复杂多少倍。比起那首次解决了超太空飞行的难题，使星辰间的旅程成为可能的地球「行星模」（历来最大的「行星模」。）其复杂性也不相伯仲。

The earth is a the sun third the , it is a solar system indoles earth planet is amid the maximum of a, is also solar system number the fifth major planet, planet age estimate the about have 45 hundred million year.

地球是距太阳第三颗，它是太阳系类地行星中最大的一颗，也是太阳系第五大行星，行星年龄估计大约有45亿年(4.5×109)。

If a protoplanet was large enough, soon enough, its gravity would pull in the nebular gas, and it would become a gas giant.

如果一个原行星足够大，形成足够快，它的重力会拉入星云的气体，它就会变成一个巨型气体行星。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。