If the observable Universe is our world, the Local Group of galaxies our neighborhood, the Virgo Supercluster our city, and the Milky Way our house, the Pisces Cetus Supercluster Complex is our country. The PCSC is a “galaxy filament” — a cluster of galaxy superclusters — and the largest known structure in the Universe. The PCSC, our home filament, is one billion light years across, and it’s thought to contain mass equivalent to 10^18 Suns. Our “city”, the Virgo Supercluster, only comprises 0.1% of the PCSC’s total mass.
Keishinrei 