For instance, five of the six planets orbit closer to their parent star than any planets in our solar system orbit the sun.
比如，其6个行星里有5个围绕其母星的轨道距离比我们太阳系里任何一个行星到太阳的轨道距离都要近。
The eight planets of our solar system orbit in the same direction along what's called the ecliptic, a flat plane that's nearly aligned with the sun's equator.
太阳系中的八大行星都沿着同一方向在被叫作黄道面(这一平面与太阳赤道面形成微小的夹角)运行。
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.
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。
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。
But once it gets there and settles into orbit, Juno will begin an intensive study of the structure and composition of the Solar System 'biggest planet.
一旦它抵达那里并进入轨道，“朱诺”就将开始对太阳系中最大的行星的结构和组成进行透彻的分析。
The new planet would be a little bit bigger than Venus, and the Solar System would be a little more regular after the collision, but the Earth's orbit would not be affected.
新地球将比金星大一点，碰撞之后，太阳系就会恢复正常，而地球的轨道不会受到影响。
Although our solar system only has one star, most stars like our sun are not solitary, but are binaries where two stars orbit each other a pair, or multiples involving even more stars.
虽然我们的太阳系只有一颗恒星，但其实大部分和我们太阳相似的恒星都不是单个的，而是由两个恒星相互旋转组成的双星系统，或者甚至包含更多恒星的多星系统。
If found in our own solar system its diameter would almost encompass the orbit of Jupiter.
如果把它放到我们的太阳系中，参宿四的直径几乎可以环绕木星轨道一周。
After all, Newton invented calculus in order to solve a physics problem: the orbit of the moon and planets in the solar system.
(毕竟，牛顿发明了微积分本来就是为了解决一个物理问题通常你可以申请在：太阳系中的月球和行星轨道问题)。
Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles iron solar system.
即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。
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。
But Muller says this instability has resulted in an orbit that has changed greatly over billions of years, and in the next billion years Nemesis will be thrown free of the solar system.
但是穆勒认为正是这种不稳定性在百万年的时间中改变了它的轨道，在下一个十亿年“复仇者”会完全脱离太阳系。
And not just man. The whole Earth was made from dust particles in orbit around the primitive sun, as were all the other solid objects in the solar system.
而且不仅仅人是尘土造的，包括地球在内的、整个太阳系的固体物质都是由环绕早期太阳的尘埃造的。
The distance to the moon was also known and a few centuries later, the sun was known to be at the center of our solar system with the planets in orbit around it.
几个世纪后，地球到月球的距离也为人所知，太阳被公认为是我们太阳系的中心，系内所有的行星都围绕着它旋转。
This notion has been used to successfully explain phenomena in our solar system, such as the slight alterations in Mercury's orbit around the sun, which Newton's gravity couldn't account for.
这个观点成功的解释了我们太阳系中的现象，例如，水星绕太阳轨道的微小变动。这是牛顿的引力定律所无法解释的。
Over the decades scientists continued to find similarly large objects in Pluto's neighborhood, a region of the solar system beyond the orbit of Neptune called the Kuiper belt.
海王星轨道以外有一个被称之为太阳系的柯伊伯带的区域，接下来的几十年内，在这个区域中靠近冥王星的位置科学家接连发现了许多和冥王星相似的星体。
The Messenger began its trip through the inner solar system six and a half years ago, and it entered orbit around Mercury on March 18.
“信使”号探测器在六年半前开始了它的太阳系之旅，直到今年三月十八日才进入水星轨道。
A large planet that is in orbit outside the solar system may be pushing comets towards earth.
一个位于太阳系外轨道的大型行星可能正将彗星推向地球。
Astronomers have now found six planets in orbit around Gliese 581 - the most discovered in a planetary system other than our own solar system.
天文学家在Gliese 581周围已经发现了六颗行星——除了我们的太阳系之外，Gliese 581是人类发现行星最多的行星系。
Dawn, which launched in September 2007, is on track to become the first spacecraft to orbit two solar system destinations beyond Earth.
2007年9月发射的曙光号一直在成为第一个进入地球之外两个太阳系系统目的地的轨道的路上。
One topic included "orbit", "dust", "Jupiter", "line", "system", "solar", "gas", "atmospheric", "Mars" and "field".
其中一个主题包括“轨道”、“尘埃”、“木星”、“经纬线”、“系”、“太阳”、“大气”、“大气层的”、“火星”和“场”。
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。
Our planet Earth is one of nine planets which move round, or orbit, the Sun. The Sun, planets, and their moons form the solar system.
我们的地球是围绕太阳按轨道运行的九大行星之一。太阳、行星及行星各自的卫星构成了太阳系。
Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles in our solar system.
即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。
The Moon has had a tilted orbit since 2004, after Planet X came into the inner solar system in 2003.
行星X于2003年进入了内太阳系之后，自从2004年以来月球的轨道就倾斜了。
The Moon has had a tilted orbit since 2004, after Planet X came into the inner solar system in 2003.
行星X于2003年进入了内太阳系之后，自从2004年以来月球的轨道就倾斜了。
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