Ghosts of the future: First giant structures of the universe hold 800 trillion suns

Ghosts of the future: First giant structures of the universe hold 800 trillion suns: "ScienceDaily (Oct. 14, 2010) — Astronomers using the South Pole Telescope report that they have discovered the most massive galaxy cluster yet seen at a distance of 7 billion light-years. The cluster (designated SPT-CL J0546-5345) weighs in at around 800 trillion Suns, and holds hundreds of galaxies."