1. The OortCloud is thought to extend about 1 light year from the Sun.
欧特云团距太阳1光年距离。
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2. The other six hail from the OortCloud more than 5, 000 times farther out.
其他六个产生于又远出5000多倍的奥尔特星云。
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3. A Nasa graphic which illustrates how the OortCloud surrounds our solar system.
这幅美国宇航局的图示说明了奥特云如何包围着我们的太阳系。
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4. This is still well within the Oortcloud, whose boundary is estimated to be beyond 50,000 AU.
据估计，奥尔特云的边界应在50,000天文单位外，因此该天体依然位于奥尔特云内。
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5. Our solar system is surrounded by a vast collection of icy bodies called the Oort Cloud.
我们的太阳系被一大片冰体物质所包围，这就是所谓的欧特云团(Oort Cloud)。
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6. Tyche is the nickname given to a hypothesized gas giant planet located in the Solar System's Oortcloud.
幸神星是太阳系奥尔特云内的一颗假设的气态巨行星的昵称。
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7. Neither Kirkpatrick nor Wright think Nemesis is disrupting the Oortcloud and sending comets towards Earth, however.
然而，不论是克里克·帕特里克还是赖特，他们都不认为“复仇者”正在扰乱欧特云团并将彗星抛向地球。
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8. Normal comets fall into the inner regions of the solar system from icy reservoirs in the distant Kuiper belt and Oortcloud.
通常来说，彗星来自距离遥远且冰天雪地的柯伊伯带和奥尔特星云然后掉入太阳系中的内层区域。
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9. They suggest that during its orbit it would regularly enter the Oortcloud, jostling the orbits of many comets there and causing some to fall toward Earth.
10. We will learn about strange objects called comets and asteroids, and about mysterious places like the asteroid Belt, the Kuiper Belt, and the OortCloud.
我们将学习彗星和小行星奇怪物体，以及一些神秘的地方，如小行星带，柯伊伯带和奥尔特云。
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11. Every so often a comet gets flung out of the OortCloud, a swarm of comets on the fringes of the solar system, and gets close enough to Earth for us to see it.
经常有彗星被甩出奥尔特云(在太阳系边缘的彗星群)，并靠近地球到肉眼可以观测的距离。
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12. Their theory was that the orbit of this star every 26 million years moved into an area called the Oortcloud and dislodged comets that then pounded the earth.
13. The scientists have analysed the comets in the Oort cloud and deduced that 25 per-cent of them would need a nudge by a body of at least Jupiter size before they changed orbit.
14. There it causes havoc in the OortCloud, a huge region surrounding the solar system that contains billions of bits of cosmic rubble left over from the formation of planets.
15. There it causes havoc in the OortCloud, a huge region surrounding the solar system that contains billions of bits of cosmic rubble left over from the formation of planets.
16. The Oortcloud is a vast belt of dust and ice that is believed to lie around one light year from the Sun and is the origin of many of the comets that pass through our solar system.
17. Most comets that fly into the inner solar system seem to come from the outer region of the Oort cloud - a region of icy dust and debris left over from the birth of the solar system.
18. Thee Oortcloud is a vast belt of dust and ice that is believed to lie around one light year from the Sun and is the origin of many of the comets that pass through our solar system.
19. But it would play a big role in the way comets' made their way 'from their birth places in the planetary disc out to the Oort Cloud and on now they can return to the inner solar system.
20. When Matese and Whitmire analyzed the orbits of these OortCloud comets, about 20% of them seemed to come not from the random directions you'd expect, but from a narrower section of sky.
21. I believe it is likely that this is because the OortCloud is being disturbed by a massive body that is throwing comets out of stable orbits, a small fraction of which could reach the Earth.
22. I believe it is likely that this is because the OortCloud is being disturbed by a massive body that is throwing comets out of stable orbits, a small fraction of which could reach the Earth.
23. I believe it is likely that this is because the OortCloud is being disturbed by a massive body that is throwing comets out of stable orbits, a small fraction of which could reach the Earth.
