Fascinating documentary I just watched. Mind boggling statistics. As if a galaxy isn't big enough, there's superclusters of galaxies pulled together. And as if superclusters aren't big enough, there's the invisible cosmic web holding most of it together. Apparently many scientists agree that the cosmic web is the biggest object in the universe. It's incredible that scientists have been able to discover so much detail about things which are often hundreds, thousands or millions of light years away.
http://www.youtube.com/watch?v=hw3h8z7WgdQ
http://www.youtube.com/watch?v=hw3h8z7WgdQ