A Dark Matter Bridge in our Cosmic Neighborhood (+Video)

By using the best available data to monitor galactic traffic in our neighborhood, Noam Libeskind from the Leibniz Institute for Astrophysics Potsdam (AIP) and his collaborators have built a detailed map of how nearby galaxies move. In it they have discovered a bridge of dark matter stretching from our Local Group all the way to the Virgo cluster—a huge mass of some 2,000 galaxies roughly 50 million light-years away, that is bound on either side by vast bubbles completely devoid of galaxies. 
This bridge and these voids help us understand a 40 year old problem regarding the curious distribution of dwarf galaxies.

These dwarf galaxies are often found swarming around larger hosts like our own Milky Way. 
Since they are dim they are hard to detect, and are thus found almost exclusively in our cosmic neighborhood.  

physorg.com
Read more here: http://tinyurl.com/oqejxfv

Planes of satellite galaxies and the cosmic web
http://arxiv.org/abs/1503.05915

The figure shows the current stream of galaxies – the flow along in the cosmic super-highway and on the bridge to Virgo, in the region around the Milky Way, Andromeda and Centaurus A http://www.aip.de/en/news/press/super-highway