而且，利用该太空望远镜工作的天文学家们称，单单根据其中行星的数目就可以说明那些系统比我们的太阳系更为平静。
What's more, the sheer number of those systems suggests that they are more tranquil places than our own solar system, say astronomers working with the telescope.
天文学家们称，这是他们所观察到的最遥远的类星体，是一个被发光气体环绕的巨型黑洞，也是早期宇宙中最为明亮的天体。
Astronomers say it is the most distant quasar, a massive black hole surrounded by luminous gas, that they have ever seen as well as the brightest object to be sighted in the early universe.
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