木星有多少颗卫星？
木星的卫星木卫一全是岩石，其密度为每立方厘米3.5克。
Jupiter's moon Io, whose density is 3.5 grams per cubic centimetre, is all rock.
它不是去木星，而是去其他的星系。
It's not going to Jupiter. It's going to some other planetary system.
科学家们正在仔细研究木卫二，它是木星的卫星。
One place scientists are studying very closely is Europa, a moon of Jupiter.
今晚你能看到木星吗，在箭头状星座摩羯座的前面？
Can you see Jupiter tonight, in front of the arrowhead-shaped constellation Capricornus the Seagoat?
然而，如今的类地行星与木星不同，几乎没有轻气体和冰。
However, unlike Jupiter, the terrestrial planets today are nearly void of light gases and ices.
你的朋友即将要登上一搜宇宙飞船，要去探索木星还是什么。
Your friend is about to go on the spaceship, which is going to do the exploration of Jupiter or whatever.
伽利略对木星卫星的观察表明，托勒密关于天体运动的理论是错误的。
Galileo's observations of Jupiter's satellites showed that the Ptolemaic theory of the motion of celestial bodies is false.
其次，木星的巨大质量阻止了大多数与太阳结合的彗星穿透太阳系内部。
Second, Jupiter's enormous mass prevents most Sun-bound comets from penetrating the inner solar system.
大多数试图解释热木星存在的设想是，它在更远的地方形成，然后向内迁移。
Most attempts to explain a hot Jupiter's existence envision it forming farther away, then migrating inward.
在2009年剩余的其他日子里，你可以根据木星来找到摩羯座在天空中的位置。
For the rest of 2009, you can count on the planet Jupiter to mark Capricornus' whereabouts in the sky for you.
因此，人们对这一数值的准确性和找到火星和木星之间缺失的天体都感到非常兴奋。
So people got really excited about the validity of this thing and finding the missing object between Mars and Jupiter.
诸如火星和地球这样的类地行星主要由岩石和金属构成，而木星则是大型气态行星。
The terrestrial planets—like Mars and Earth—composed largely of rocks and metals, and the large gas giants, like Jupiter.
然而，当木卫二绕其行星运行时，由于姊妹卫星和木星之间的引力拉锯战，它会弯曲。
As Europa orbits its planet, however, it flexes due to the gravitational tug-of-war between it, its sister moons, and Jupiter.
这些碎片本身几乎不含硫，但天文学家相信，木星外层大气之下的云层中确实含有硫。
The fragments themselves almost certainly contained no sulfur, but astronomers believe that the cloud layer below Jupiter's outer atmosphere does contain sulfur.
金牛宫的木星正给你带来数不清的机会，唯一的问题很可能是去选出这其中最好的一个。
Jupiter in Taurus is bringing opportunity galore, and your only problem is likely to be to pick and choose among the best offers others present.
尽管金星和水星没有卫星，火星却有两个卫星，更别提各有超过60个卫星的土星和木星。
While Venus and Mercury have no moons, Mars has two, while Saturn and Jupiter have more than 60 each.
据推测，所有行星都是由尘埃和气体组成的原始云团凝聚而成，其组成与木星的组成有些相似。
It is hypothesized that the primordial cloud of dust and gas from which all the planets are thought to have condensed had a composition somewhat similar to that of Jupiter.
在那之后，木星和海王星直到2022年才会再次相遇，但是当他们相遇的时候，将不在水瓶座。
After that, Jupiter and Neptune will not meet again until 2022, but when they do meet then, it will not be in Aquarius.
塔法里·阿瑟法是木星酒店酒吧演奏乐队的鼓手，这间酒店是首都亚的斯亚贝巴的新兴企业之一。
Tafari Assefa now plays his drums in a band at the bar of the Jupiter Hotel, one of the newer establishments in Addis Ababa, the capital.
第一个是一对质量与木星差不多的行星，这对行星步调一致地围绕距离地球15光年的母恒星旋转。
The first is a pair of planets, each about the mass of Jupiter, that whirl around their home star 15 light years from Earth in perfect lockstep.
虽然木星不能够把地球从围绕太阳旋转的轨道上拉出来，但是它对地球的引力也产生了相当大的作用。
Though Jupiter is not able to draw the earth out of its course round the sun, yet it attracts the earth to some extent.
在远离太阳的外太阳系，在木星轨道之外，温度低到足以使冰从水以及甲烷和二氧化碳等气体中形成。
Far from the sun, in the outer solar system, beyond Jupiter's orbit, temperatures are low enough to permit ices to form out of water and out of gases like methane and carbon dioxide.
这个系外行星的质量是地球的几倍，但是它足够小，能够由岩石构成，而不是像木星是一团巨大的气体。
The exoplanet is a few times the mass of Earth, but it should still be small enough to be rocky rather than a gas giant like Jupiter.
木星、土星、天王星和海王星。这些都是气体行星，是太阳系的四个重量级。但曾经存在第五个行星吗？
Jupiter, Saturn, Uranus, and Neptune. Those are the gas giants, the four heavyweights of the solar system. But was there once a fifth?
由于哥白尼的行星运动理论与托勒密的解释不一致，伽利略对木星卫星的观察证明了哥白尼理论的正确性。
Since the Copernican theory of planetary motion is inconsistent with the Ptolemaic account, Galileo's observations of Jupiter's satellites proved the truth of the Copernican theory.
水星、金星、地球、火星、木星和土星的轨道恰好符合这种模式；1781年发现的天王星也同样符合该定律。
The orbits of Mercury, Venus, Earth, Mars, Jupiter and Saturn fit neatly into this pattern; Uranus, discovered in 1781, also obeyed the law.
按照它们与太阳的距离排列，这些行星分别是水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星。
The planets, in order of their distance from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
穿过小行星带继续前进，我们进入了气体巨行星区域：木星、土星、天王星、海王星，所有这些都使地球看起来像个侏儒。
Moving on through the asteroid belt we enter the realms of the gas giant planets: Jupiter, Saturn, Uranus, and Neptune, all of which dwarf the Earth.
穿过小行星带继续前进，我们进入了气体巨行星区域：木星、土星、天王星、海王星，所有这些都使地球看起来像个侏儒。
Moving on through the asteroid belt we enter the realms of the gas giant planets: Jupiter, Saturn, Uranus, and Neptune, all of which dwarf the Earth.
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