By using two of the most powerful ground-based telescopes in the world astronomers at the European Southern Observatory (ESO) have tracked down a gigantic network of galaxies almost seven billion light-years away from Earth.
“Matter is not distributed uniformly in the Universe,” says Masayuki Tanaka from ESO, who led the new study. “In our cosmic vicinity, stars form in galaxies and galaxies usually form groups and clusters of galaxies. The most widely accepted cosmological theories predict that matter also clumps on a larger scale in the so-called ‘cosmic web’, in which galaxies, embedded in filaments stretching between voids, create a gigantic wispy structure.”
Back in 2001, ESO decribed the structure this way: "It is "spongy", with galaxies forming along filaments, like droplets along the strands of a spiders web." Now, that's something I can visualize easily.
Among these clumps most are ten times the size of the Milky Way, some however are one thousand times bigger. And the main galaxy cluster is ten thousand times the mass of the Milky Way.