The orbit of this comet intersects the orbit of the Earth.
这颗彗星的轨道和地球的轨道相交。
Earth is the only one of the inner planets with a large satellite, the orbit of which is neither in the equatorial plane of Earth nor in the plane in which the other planets lie.
地球是内行星中唯一一个有大卫星的，它的轨道既不在地球的赤道平面上，也不在其他行星所在的平面上。
Mars's orbit around the Sun is the fourth fastest orbit of all the solar system planets.
在太阳系所有行星中，火星绕太阳的轨道速度第四快。
We know the orbit of this object very well.
我们非常了解这一物体的轨道。
What does the orbit of the Moon around the Sun look like?
月球绕太阳的轨道是什么样的呢？
The orbit of every planet is an ellipse with the Sun at a focus.
第一定律（轨道定律）：所有行星都沿各自的椭圆轨道运动，太阳在该椭圆的一个焦点上。
Let us test Kepler's third law for the orbit of Uranus compared with that of earth.
让我们比较天王星和地球的轨道，来检验一下开普勒第三定律。
The law of universal gravitation helps us predict accurately the orbit of a spacecraft.
万有引力定律帮助我们精确计算宇宙飞船的轨道。
On the astrolabe, an off - centered circle represents the orbit of the sun - the ecliptic.
在星盘上，一个偏心的圆代表了太阳的运行轨道——黄道。
The orbit of the brown dwarf is huge, about 2, 500 times the distance between Earth and the sun.
这颗褐矮星的运行轨道相当庞大，大约是地球到太阳距离的2500倍。
Most pressing for us now is to bring moral cultivation within the orbit of college education.
我们的当务之急是将道德修养纳入大学教育的轨道。
The tilt and orbit of Mars and its thin atmosphere also would have a big impact on its ice ages.
火星的斜度和轨道以及它的稀薄大气可能也会对其冰河时期产生很大的影响。
They were searching for Vulcan, a putative planet inside the orbit of Mercury, by looking for its transits.
他们通过寻找凌日来寻找水星轨道内的一个假定的行星伏尔甘。
The country's second lunar probe, known as the Chang 'e 2, has reached an orbit of 1.5 million kilometers from earth.
国家第二个月球探测器，嫦娥二号，已经飞抵距离地球150万公里的一个轨道上。
Voyager 2 and Pioneer 11, both also well beyond the orbit of Pluto, are 14.2 billion and 12.4 billion kilometers from the Sun respectively.
航行者2号和先驱者11号也都超越了冥王星轨道，分别离太阳有142亿和124亿千米。
Two often merge after an average mutual orbit of 500 million years-romance in the heavens we now can see clearly for ourselves. -gretchen parker.
两个星系通常要经过5亿年相互旋转才能汇合在一起——而此刻我们眼前上演的正是这一出太空浪漫剧。
They were started by slow and subtle shifts in the orbit of the Earth that changed the amount and distribution of radiation reaching us from the sun.
地球轨道缓慢而微弱的变化改变了阳光照射我们的数量和辐射的分布，从而引发了这些变化。
In fact, if Betelgeuse replaced the sun in our solar system, its outer layers would extend past Earth and Mars and to nearly the orbit of Jupiter.
实际上，如果让参宿四来代替我们太阳系的太阳，它的外层将会延伸超过地球和火星，并且几乎接近于木星的轨道。
Their theory was that the orbit of this star every 26 million years moved into an area called the Oort cloud and dislodged comets that then pounded the earth.
他们的理论是，这颗星星的轨道每隔2600万年都会进入奥尔特星云所在的区域，从而激发该处的彗星冲击到地球上。
The scope of our research and teaching is immense, ranging from the inaccessible depths of the terrestrial interior outward to the orbit of Pluto, and beyond.
我们的研究和教学的范围极为深广，从难以抵达的地球内部到冥王星和其轨道之外的领域。
He studied the light curves of asteroids and thus their rotation, and also studied the variable star CZ Cassiopeiae, and the evolution of the orbit of Comet Halley.
张钰哲研究小行星的光变曲线和旋转、CZ仙后座变星以及哈雷彗星轨道的变化。
A typical orbit of lunar probe includes earth parking orbit segment, earth-moon transfer orbit segment, lunar satellite orbit segment and moon-landing orbit segment.
典型的月球探测器飞行轨道包括地球停泊轨道段、地月转移轨道段、月球卫星轨道段和着月轨道段。
The new model, which tracks thousands of tiny particles beyond the orbit of Neptune, could help astronomers work out the properties of planets in other stars' dust disks.
这个新模型追踪了海王星轨道外数无数个微小物体的运行轨迹，它可以帮助天文学家计算出其他星系尘埃盘中行星的特性。
The orbit of the earth around the sun is eccentric because the orbit is slightly elliptical and so has effectively has two centres (neither of them the centre of the sun).
地球环绕太阳的公转轨道是偏心的，这是因为地球的公转轨道稍微呈椭圆形，所以这个轨道实际上就有两个中心（这两个中心都不与太阳的中心重合）。
A new survey of the Kuiper belt - the distant area of the solar system beyond the orbit of Neptune - has turned up three new icy worlds that may be dwarf planets like Pluto.
一项对柯伊伯带-太阳系学海王星轨道之外的远距区域的调查，找到了三个新的冰封世界，可能像冥王星那样的矮星。
A new survey of the Kuiper belt - the distant area of the solar system beyond the orbit of Neptune - has turned up three new icy worlds that may be dwarf planets like Pluto.
一项对柯伊伯带-太阳系学海王星轨道之外的远距区域的调查，找到了三个新的冰封世界，可能像冥王星那样的矮星。
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