There are lots of lines in our planets cosmic address: Earth, the - TopicsExpress



          

There are lots of lines in our planets cosmic address: Earth, the solar system, the Milky Way galaxy, the Local Group of galaxies, and the Virgo Cluster of galaxy groups. Now astronomers are adding another one: the Laniakea Supercluster, which takes its name from the Hawaiian term for immense heaven. Laniakeas outlines and boundaries are laid out for the first time in this weeks issue of Nature. Our Milky Way lies on the outskirts of the supercluster, which spans 500 million light-years and contains the mass of 100 quadrillion suns in 100,000 galaxies. The focal point that influences the motion of our own Local Group as well as other groups of galaxies is called the Great Attractor. It is a large gravitational valley that draws all those galaxies inward Alan Boyle / NBCnews
Posted on: Thu, 04 Sep 2014 04:47:19 +0000

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