奥尔特云

Tyche is the nickname given to a hypothesized gas giant planet located in the Solar System´s Oort cloud.

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。

This is still well within the Oort cloud, 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。

Every so often a comet gets flung out of the Oort Cloud, 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。

We will learn about strange objects called comets and asteroids, and about mysterious places like the asteroid Belt, the Kuiper Belt, and the Oort Cloud.

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。

The Oort cloud 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.

奥尔特云是一个由粉尘和冰组成的庞大云带，据信它距离太阳约一光年，许多穿越我们太阳系的彗星都来自那里。