We finally know our cosmic address.
我们终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.
天文学家第一次发现了我们的宇宙家园超星系团,这是星系团和较大星系群的一种聚集体,其中所有星系都是相互联系的网络。
Researchers, led by an astronomer at the University of Hawaii at Manoa, have named this supercluster Laniakea, which means “immense heaven” in Hawaiian.
在夏威夷马诺亚大学一位天文学家领导下的研究人员们将此超星系团命名为兰天,夏威夷语意思是“广袤无垠的天堂”。
Laniakea encompasses 100,000 galaxies stretched out over 500 million light-years.
兰天超星系团内部包含10万个星系,延伸5亿光年的距离。
Our own Milky Way is just one of these.
我们的银河星系就是其中一个星系。
The study is in the journal Nature.
这项研究已经在《自然》杂志上发表。
Superclusters are some of the universe's largest structures, and have boundaries that are tough to define—especially from inside one.
超星系团是宇宙中最大的组织结构,并且很难定义各个星系团的边界,尤其是内部的星系。
The team used radio telescopes to map out the motions of a large collection of local galaxies.
这个研究小组使用电波望远镜在地图上标出大量局域星系团的运动。
Within a given supercluster, all galaxy motions will be directed inward, toward the center of mass.
而在超星系团内部,所有星系都是向内部质心运动。
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.
至于兰天,其重力焦点被称为巨引力源并且影响着我们局域星系的运动,所有的其他星系都是穿过我们的超星系团。
It's time to update our intergalactic maps: Laniakea is home sweet home.
现在应该更新我们的星际地图:兰天就是我们的美好家园。