Ghosts of the future: First giant structures of the universe
Wednesday, October 13, 2010 - 11:02
in Astronomy & Space
(PhysOrg.com) -- 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.