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We finally know our cosmic address.
我們終于搞清楚了宇宙的所在。
For the first time, astronomers have identified our home supercluster—a conglomeration of groups of galaxies and larger clusters of galaxies, all interconnected in a stringy web.
天文學家第一次發現了我們的宇宙家園超星系團，這是星系團和較大星系群的一種聚集體，其中所有星系都是相互聯系的網絡。
Researchers, led by an astronomer at the University of Hawaii at Manoa, have named this supercluster Laniakea, which means “immense heaven” in Hawaiian.
在夏威夷馬諾亞大學一位天文學家領導下的研究人員們將此超星系團命名為蘭天，夏威夷語意思是“廣袤無垠的天堂”。
Laniakea encompasses 100,000 galaxies stretched out over 500 million light-years.
蘭天超星系團內部包含10萬個星系，延伸5億光年的距離。
Our own Milky Way is just one of these.
我們的銀河星系就是其中一個星系。
The study is in the journal Nature.
這項研究已經在《自然》雜志上發表。
Superclusters are some of the universe's largest structures, and have boundaries that are tough to define—especially from inside one.
超星系團是宇宙中最大的組織結構，并且很難定義各個星系團的邊界，尤其是內部的星系。
The team used radio telescopes to map out the motions of a large collection of local galaxies.
這個研究小組使用電波望遠鏡在地圖上標出大量局域星系團的運動。
Within a given supercluster, all galaxy motions will be directed inward, toward the center of mass.
而在超星系團內部，所有星系都是向內部質心運動。
In the case of Laniakea, this gravitational focal point is called the Great Attractor, and influences the motions of our Local Group of galaxies and all others throughout our supercluster.
至于蘭天，其重力焦點被稱為巨引力源并且影響著我們局域星系的運動，所有的其他星系都是穿過我們的超星系團。
It's time to update our intergalactic maps: Laniakea is home sweet home.
現在應該更新我們的星際地圖:蘭天就是我們的美好家園。
