The orbits of Mercury, Venus, Earth, Mars, Jupiter and Saturn fit neatly into this pattern; Uranus, discovered in 1781, also obeyed the law.
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 nearly circular orbits of planets in our solar system led scientists to expect that planets around other stars would also reside in circular orbits.
在我们的太阳系中，行星的轨道几乎是圆形的，这使得科学家们预测，其他恒星周围的行星也会位于圆形轨道上。
Dr Bottke has been tracking the orbits of asteroids.
伯克(Bottke)博士一直在追踪小行星的运行轨迹。
How does it affect orbits of photons or massive particles?
它怎样影响光子或大质量粒子的轨道呢？
Astronomers had thought that the orbits of the planets were predictable.
天文学家早就认为，几大行星的轨道是可以预测的。
Other enumeration problems lead us to the study of orbits of permutation groups.
其它的计数问题引导我们去研究置换群的轨道。
The orbits of planets in the Gliese 581 system are compared to those of our own solar system.
Gliese 581系统的行星轨道与太阳系的比较图。
According to Bode's law, there is a hidden pattern in the spacing of the orbits of the planets.
根据波德定律，行星轨道的空间一定会有某种隐含模式。
Back then computers were mostly for scientific computation, like calculating the orbits of rockets.
当时的电脑主要是用来科学计算的，例如计算火箭的轨道。
Between the orbits of Mars and Jupiter lies the asteroid belt, which includes the dwarf planet Ceres.
在火星和木星的轨道间分布着小行星带，之中有一颗矮行星谷神星。
After 10 orbits of the moon, the three astronauts headed back to Earth and landed on Dec. 27, 1968.
在环绕月球飞行10圈之后，三名宇航员返回地球并于1968年12月27日着陆。
The popular symbol of the Atom is stark: a black dot encircled by the hairline orbits of several other dots.
通行的原子标志是直白的：几个点循极细的轨道环绕着一个黑点。
The finding comes from simulations to show how orbits of planets might evolve billions of years into the future.
这一发现源自显示未来数十亿年中行星轨道会如何演变的模拟计算。
Brooks: Oh, no. Back then computers were mostly for scientific computation, like calculating the orbits of rockets.
布鲁克斯：没有这样想过。当时的电脑主要是用来科学计算的，例如计算火箭的轨道。
If the orbits of planets are not edge-on to observers on Earth, the technique underestimates the masses of the planets.
如果行星的轨道对于地球上的观测者来说并不是边缘向前的，这项技术会低估行星的质量。
Most of the millions of asteroids are found between the orbits of Mars and Jupiter, but some dip closer to the sun.
这几百万颗小行星大部分发现于火星和木星的运行轨道之间，只是其中有一些更加靠近太阳。
They don't happen often-only about once a year-since the tilted orbits of the sun, moon, and Earth make their alignment rare.
它们并非经常发生，大约只有一年一次，因为太阳，月亮的轨道相互倾斜，它们很少能排成一条直线。
Earth's orbit is not a perfect circle, but is rather an oval-shaped ellipse, like that of the orbits of all the other planets.
地球轨道不是完美的圆形，而是像其它行星的轨道一样，呈椭圆形。
The spacecraft, which is not intended to land on the moon, had completed more than 3, 400 orbits of the moon over 312 days.
探测器原计划并不在月球着陆。目前，它已经绕月飞行了312天，3400圈。
Hartley 2 is a so-called Jupiter family comet, because its orbit takes the comet close to the orbits of Jupiter and the other gas giants.
哈特雷2号彗星是一颗被称之为“木星家族”的彗星，原因在于其轨道与木星和其它气态星体的轨道靠得很近。
Asteroids are minor planets, most of which circle the sun in a region known as the asteroid belt, between the orbits of Mars and Jupiter.
小行星是较小的行星，它们中的大部分在火星和木星轨道间的小行星带中环绕太阳运行。
Since the eccentricities are small, we can assume that the orbits of the Earth around the Sun and the Moon around the Earth are both circles.
由于偏心率小，我们假定地球绕太阳的轨道和月球绕地球的轨道都是圆形。
Meanwhile, the sizes and orbits of planets already discovered are revolutionizing researchers' understanding of how planetary systems form and evolve.
同时，这些新发现行星的体积和轨道彻底改变了科学家对行星系形成和进化过程的认识。
They suggest that during its orbit it would regularly enter the Oort cloud, jostling the orbits of many comets there and causing some to fall toward Earth.
他们提出，在这颗行星的轨道上，它会定期地进入奥特云，扰乱那里很多彗星的轨道，并且使得其中一些彗星掉落到去往地球的方向上。
The giant space rocks created a spectacular trail of debris as they collided at 11, 000mph - five times the speed of a rifle bullet - between the orbits of Mars and Jupiter.
巨大的太空岩石以每小时11 000英里——五倍于步枪的速度在火星和木星轨道间相撞，形成壮观的碎片尾迹。
The Near-Earth Object Observation Program, commonly called "Spaceguard, " also plots the orbits of these objects to determine if any could be potentially hazardous to our planet.
近地天体观察项目，常被叫做“太空警卫”，也对这些天体绘制了轨道图来判断其中是否有天体可能对我们的星球有潜在危险。
Sometimes, they happen to see the orbits of exoplanets edge-on. In those cases, the planet alternately shows more of its dayside and then more of its nightside as it circles its star.
有时，天文学家们碰巧从侧面观察到系外行星的轨道，在这种情况下，行星在围绕恒星旋转的时候就会交替地呈现出有时光面较多、有时暗面较多。
When Matese and Whitmire analyzed the orbits of these Oort Cloud comets, about 20% of them seemed to come not from the random directions you'd expect, but from a narrower section of sky.
马泰赛和惠特迈尔分析了来自奥尔特星云的彗星轨道后，发现其中20%的彗星不是像你以为的来自于随机方向，而是来自于天空的某个狭窄区域。
It is now nearly 8 billion miles away, past the orbits of Neptune and Pluto, and we will not hear from it again because it no longer has any power left with which to send out a signal.
现在距地球差不多有80亿英里，比地球距海王星和冥王星的轨道还要远，我们再也不会从它那里听到任何声音，因为再也不会有什么能量可以使它发出任何信号了。
This corresponds to a place where the gravitational pulls of Mars and Jupiter have conspired to change the orbits of any asteroids much faster than the Yarkovsky effect could manage alone.
与此相一致的是，在火星和木星共同的引力作用下改变小行星的轨道要比单一的雅科夫斯基效应（Yarkovsky effect）改变其轨道要快得多。
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