多年来，牛顿一直对月球和行星绕轨道运行的原因感到好奇。
Newton for years had been curious about the cause of the orbital motion of the moon and planets.
他想弄明白为什么行星会绕太阳做轨道运行。
He wanted to know how it could be that the planets orbited the sun.
猎户舱将独自己在月球轨道运行，等候重返地球。
Orion will operate on its own in lunar orbit, standing by for the return trip to Earth.
正如其它沿轨道运行的行星自转一样，这些小行星也有自转。
Just as most orbiting planets spin on their axes, so asteroids also rotate.
他们将一起在轨道运行12天，之后“神舟8号”将返回地面。
They will orbit together for 12 days before the Shenzhou 8 returns to earth.
通过寻找绕行星轨道运行的母恒星中的摇晃，已定位了400多个行星。
More than 400 have been located by looking for the wobbles in parent stars that orbiting planets cause.
强劲的土星对你的职业进展至关重要，土星在快速轨道运行会是一种庇佑。
Because a strong Saturn is always critical to your career progress, this planet's turn to speedier orbit will be a blessing.
发亮，可能说明沿轨道运行的天体亮面正对着地球，就像月亮反射阳光那样。
Brightening would imply that the lighted-up side of an orbiting object is facing the Earth, as when sunshine reflects off the moon.
我们必须打造一个强劲的城市核心，接着他将按照既定的轨道运行。
We have to create a hot urban core, and it is going to happen.
该上升卫星将跟另外7颗在轨道运行的卫星一起形成全球定位导航服务系统。
The rising star will join seven other satellites already in orbit to form a network which will eventually provide navigation and positioning services around the globe.
从最基本的层面来说，过山车是一种利用重力让车体沿着弯曲轨道运行的机器。
At its most basic level, a roller coaster is a machine that USES gravity to send a train along a winding track.
为庆祝哈勃望远镜升空并进入绕地轨道运行20周年纪念拍下了这个图片。
The image celebrates the 20th anniversary of Hubble's launch and deployment into an orbit around Earth.
那些近距离围绕主要星系轨道运行的卫星最终将它们的星际气云失给了更大的星系。
Satellites that orbit close to major galaxies eventually forfeit their interstellar gas to the greater galaxy.
新年其实是个随意的时间，它基于我们生活的这个星球的轨道运行，有很多可能性。
The New Year is based on an arbitrary time, in the orbit of theplanet we happen to live on, which is statistically likely to be one ofmany we could’ve inhabited.
左下角红色球体，是一颗年轻行星，其组成成分和木星相似，绕褐色矮星做轨道运行。
The red orb at bottom left is a young planet, similar in composition to Jupiter, orbiting a brown dwarf, a dim, failed star that is probably 42 times less massive than the sun.
如果宇航员幸运的话，韦伯可能会研究附近的，以一个红色的小星球为轨道运行的超级地球。
If astronomers get lucky, Webb will be able to study a nearby super-Earth orbiting a red dwarf star.
根据量子力学的法则，核子外部一定数目的核外电子以一定的圆周轨道运行形成球状壳结构。
Under the laws of quantum mechanics, the nuclei of atoms have shell-like structures analogous to the spheres in which given Numbers of electrons exist in certain orbits around the nucleus.
现在约有2万间太空垃圾在地球低轨道运行，其中大部分是航天器的分离部分或者碰撞残骸。
Some 20,000 pieces of rubbish are currently being monitored in low-Earth orbit, the majority of which are discarded bits of spacecraft or debris from collisions.
探测器围绕极地轨道运行；据推测，兰斯-蒂林效应将在探测器经过赤道的点上一点点地变换。
The probe orbits the Earth's poles; the Lense-Thirring effect is predicted to shift, little by little, the point on the equator crossed by the spacecraft.
这艘无人驾驶的航天器发射于1966年3月31日，并在两天后进入绕月轨道运行。
The unmanned probe launched March 31, 1966, and entered orbit around the moon two days later.
地球和火星都必须在其确定的轨道运行，在这种情况下，发射窗只能每25各月才有机会发射一次。
Earth and Mars have to be at the right positions in their orbit for this method to work, and the launch window only comes around once every 25 months.
沿着圆形轨道运行的，时间和沿着椭圆轨道，所花费的时间是一样的，这决非显而易见的。
So to go around this circular orbit will take the same amount of time as to go around this one, and that is by no means obvious.
1975年6月- 10月，俄罗斯金星9号探测器第一个绕金星轨道运行，着陆，拍摄的航天器。
From June to October 1975, Russian space probe Venera 9 became the first craft to orbit, land on, and photograph Venus.
他们正使用地面仪器以及绕轨道运行的仪器如哈勃太空望远镜和斯皮策太空望远镜检查这些候选恒星。
They're checking out the candidates with ground-based instruments as well as orbiting assets like the Hubble Space Telescope and the Spitzer Space Telescope.
他们仅限于在近地轨道运行，在那做着发射卫星或运送宇航员到国际空间站这样毫无任何浪漫色彩的工作。
They were confined to low-earth orbit, where they did the unglamorous job of launching satellites or ferrying astronauts to the International Space Station.
首先，它非常非常老了——它经历过红巨星阶段，这一阶段的恒星会急剧膨胀，吞噬在临近轨道运行的行星。
First, it's really old - past the Red Giant phase, when stars balloon in size and swallow up planets in close orbits.
“要是你觉得仍人们遵守交通法规困难的话，”书中写道：“试想一下让小行星沿着椭圆轨道运行。”
“If you think it is hard to get humans to follow traffic laws,” we read, “imagine convincing an asteroid to move along an ellipse.”
太阳一年内的轨迹形成这种形状是因为地球围绕着与太阳略微不同的轴旋转，而我们的地球也沿着椭圆形轨道运行。
The sun makes this shape over a year because Earth rotates on a slightly different axis than the sun, and our planet also travels on an elliptical orbit.
太阳一年内的轨迹形成这种形状是因为地球围绕着与太阳略微不同的轴旋转，而我们的地球也沿着椭圆形轨道运行。
The sun makes this shape over a year because Earth rotates on a slightly different axis than the sun, and our planet also travels on an elliptical orbit.
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