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.
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.
由于空间持续不断的压力以及拉伸作用使得卫星表面温度不断上升，木星卫星就是一个典型的例子。
These moons heat up from the constant stress and stretching; Jupiter’s moon Io is a leading example.
沃斯·托克湖也引起天文学家的兴趣，因为湖水被认为与木星卫星欧罗巴上，几公里厚冰层覆盖的海水类似。
Lake Vostok also interests astronomers because its waters are thought to be similar to those on Europa, a moon of Jupiter that has an ocean covered with ice that is kilometres thick.
在与木星相遇期间，新视野号拍摄了许多张木星卫星的新影像，木星复杂而又不断变换的大气，以及上面影像中木星的小红斑。
During its encounter with Jupiter, new Horizons was able to capture new images of many Jovian moons, Jupiter's complex and ever-changing atmosphere, and Jupiter's Little red Spot, pictured above.
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.
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.
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.
木星有几个卫星？
木星有多少颗卫星？
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.
月亮上布满了火山口和山川，并不是所有东西都绕着地球转，木星周围有卫星环绕。
There were craters and mountains on the moon, not everything circuited around the earth, Jupiter had moons going around it.
1609年夏天，伽利略曾第一次用它观察了月球，之后他还观察到了木星的卫星和太阳黑子。
Using it, he first observed the moon in the fall of 1609, then the moons of Jupiter, and sunspots.
不仅地球可以承载更多水资源，其它天体也可以。举个例子，木卫二，木星的一个卫星，几乎全部是水。
Not only could we carry a lot more, there are other heavenly bodies, Europa, one of Jupiter's moons, for example, that are almost ENTIRELY water.
这些水分至今还以冰冻的形式存在于土星环，木星的卫星欧罗巴，海王星、天王星以及数以十亿计的彗星之中。
Most of it is still there, frozen solid in, among other things, the rings of Saturn, Jupiter's moon Europa, the bodies of Neptune and Uranus and billions upon billions of comets.
上面两幅画“吹捧”的两个旅游胜地是火星（左）和欧罗巴（右），木星神秘的卫星“母球”。
Above are posters extolling Mars (left) and Europa, Jupiter's mysterious “cue ball” moon.
在这张来自伽利略航天器的彩色合成照片中我们可以看到，在木星这颗遍布火山的卫星木卫一上，正发生着两场硫磺喷发。伽利略航天器从1995年至2003年一直环绕着木星运行。
Two sulfurous eruptions are visible on Jupiter's volcanic moon IO in this color composite image from the robotic Galileo spacecraft that orbited Jupiter from 1995 to 2003.
旅行者号飞船的蒙太奇图片显示了八大行星再加上木星的4个卫星，它们对着玫瑰星云的背景，在地球的月球地平线伸开地躺着。
This montage of Voyager spacecraft pictures shows the eight planets, plus four of Jupiter's moons, sprawled against the backdrop of the Rosette Nebula and on the horizon of Earth's moon.
NASA的伽利略号太空船在1996年和1997年低空飞越这颗木星的第二大卫星，他们发现木卫四的磁场在不断变化，这意味着存在电流。
NASA's Galileo spacecraft did a fly-by of Jupiter's second largest moon in 1996 and 1997 and found that Callisto's magnetic field varied, indicating currents.
Europa和Ganymede是木星的卫星。
木星第四大卫星木卫二（欧罗巴）今日天气预报的温度为零下280华氏摄氏度（相当于零下138摄氏度）。
Today's weather forecast for Europa, Jupiter's fourth largest moon, is 280 degrees below Fahrenheit.
这是一张木星'全家福'的照片，它包括了木星系统的各个组成部分：木星的边缘边的红斑，和木星的称为伽利略卫星的4颗最大的卫星。
This' family portrait, 'a composite of the Jovian system, includes the edge of Jupiter with its Great Red Spot, and Jupiter's four largest moons, known as the Galilean satellites.
这个现象在许多覆盖着冰层的卫星上都得到了证实，例如木星的卫星之一——Ganymede。
This phenomenon has been observed on other icy satellites, such as Jupiter’s Ganymede.
今年距离伽利略发现木星的四颗大卫星整整400年，突然间人类发现了数倍于其数量的卫星。
This year it will be four centuries since Galileo discovered Jupiter's four large satellites, at a stroke quintupling the number of moons then known to humanity.
这颗木星的卫星并不打算用它冰冷的肩膀来承托生命。事实上，它不仅能为简单的微生物提供生存场所，也能让复杂的生命在此安家。
This Jovian moon isn't trying to give life the cold shoulder. In fact, it could be a home not just to simple micro-organisms, but also complex life.
图片经过按比例缩放以示四个卫星的真实的相对尺寸，并按它们据木星距离的顺序排列。
The images have been scaled to represent the true relative sizes of the four moons and are arranged in their order from Jupiter.
四百年前，当伽利略将自制的天文望远镜对向夜空时，他发现了木星的四个卫星，从而证实其它行星也会有自己的卫星。
Four hundred years ago, Galileo raised his homemade spyglass to the sky and spotted four of Jupiter's moons, revealing that other planets could have their own lunar companions.
他看到木星的多颗卫星，这些物体围绕着另一个天体旋转——全然违背了教会的训导。
He saw the moons of jupiter-objects that circled another heavenly body in direct disobedience of the church's teaching.
这颗木星的卫星并不打算用它冰冷的肩膀来承托生命。
This Jovian moon isn't trying to give life the cold shoulder.
科学家们正对这颗木星的卫星进行更近一些的观察。尽管泰坦表面的温度不足零下300华氏度，他们仍然发现了许多基础生命存在的潜在构造。
Scientists are taking a closer look at this Saturn moon and finding more and more potential building blocks for very basic life there, despite Titan's surface temperature of -300 degrees Fahrenheit.
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