FROM YAHOO SCIENCE NEWS-
This deep image shows the Nebula (cyan) with a size of 2 million light-years discovered around the quasar UM287 (at the center of the image). The energetic radiation of the quasar makes the surrounding intergalactic gas glow revealing the physical structure of a cosmic web filament.
For the first time, astronomers were able to see a string of hot gas known as a filament that is thought to be part of the mysterious underlying structure that dictates the layout of all the stars and galaxies in our universe.
Scientists believe that matter in the universe is arranged into a gigantic web-like structure. This is called the cosmic web.
There are signatures of this structure in the remaining radiation from the Big Bang and in the layout of the universe itself. Without some mysterious force pulling visible matter into this web, galaxies would be randomly scattered across the universe. But they aren’t.